/ S. V. Misjul [et al.]> // J. Sib. Fed. Univ. Math. Phys. - 2013. - Vol. 6, Is. 2. - P. 227-236 ; Журн. СФУ. Сер. "Математика и физика"
. - ISSN 1997-1397
Перевод заглавия: Синтез и кристаллическая структура упорядоченного перовскита Pb2FeSbO6
Аннотация: This paper describes the synthesis of perovskite-like compound Pb2 FeSbO6 which undergoes a phase transition between 210–220 K. According to X-ray studies of the powder sample the structure of the initial cubic and the low-temperature tetragonal phases of Pb2 FeSbO6 were determined. The results obtained have been discussed using the group-theoretical analysis.
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Доп.точки доступа:
Misjul, S. V.; Мисюль, Сергей Валентинович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Olekhnovich, N. M.; Pushkarev, A. V.; Radyush, J. V.; Raevskii, I. P.; Safonov, I. N.
Труды сотрудников института физики
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Synthesis and crystal structure of the ordered perovskite Pb2FeSbO6
Исследование локальных парамагнитных центров перовскитоподобных кристаллов методом ЭПР
/ В. Н. Воронов, Э. А. Петраковская> // Физ. тверд. тела. - 2013. - Т. 55, Вып. 4. - С. 671-677. - Работа поддержана проектом НШ 4828.2012.2
Аннотация: В монокристаллах ScF3 (чистого и допированного), а также в кристаллах Rb2KScF6, Rb2KDyF6 с перовскитоподобной структурой обнаружены и исследованы точечные нанодефекты (вакансии на месте трехвалентных катионов). Исследования локальных парамагнитных центров, которые не регистрируются рентгенографией, проводились методом ЭПР. Угловая зависимость спектров указывает на локальное искажение кубической симметрии кристаллов. Наличие дополнительной сверхтонкой структуры в наблюдаемых спектрах обусловлено делокализацией электронов по шести ионам F-, образующим первый координационный полиэдр вокруг вакансии. Изученные кристаллы характеризуются большой электронной подвижностью и высокой скоростью электронов, зависящей от примеси. Высокая подвижность электронов катионного центра может быть косвенной причиной структурного фазового перехода в кристалле ScF3 при воздействии одноосного давления.
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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Петраковская, Элеонора Анатольевна; Petrakovskaya, E.A.; Voronov V.N.
Аннотация: В монокристаллах ScF3 (чистого и допированного), а также в кристаллах Rb2KScF6, Rb2KDyF6 с перовскитоподобной структурой обнаружены и исследованы точечные нанодефекты (вакансии на месте трехвалентных катионов). Исследования локальных парамагнитных центров, которые не регистрируются рентгенографией, проводились методом ЭПР. Угловая зависимость спектров указывает на локальное искажение кубической симметрии кристаллов. Наличие дополнительной сверхтонкой структуры в наблюдаемых спектрах обусловлено делокализацией электронов по шести ионам F-, образующим первый координационный полиэдр вокруг вакансии. Изученные кристаллы характеризуются большой электронной подвижностью и высокой скоростью электронов, зависящей от примеси. Высокая подвижность электронов катионного центра может быть косвенной причиной структурного фазового перехода в кристалле ScF3 при воздействии одноосного давления.
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Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Петраковская, Элеонора Анатольевна; Petrakovskaya, E.A.; Voronov V.N.
EPR investigation of local paramagnetic centers in perovskite-like crystals
/ V. N. Voronov, E. A. Petrakovskaya> // Phys. Solid State. - 2013. - Vol. 55, Is. 4. - P. 730-736DOI 10.1134/S1063783413040367
. -
Аннотация: In ScF3 single crystals (pure and doped) as well as in Rb2KScF6 and Rb2KDyF6 crystals with a perovskite-like structure, point nanodefects (vacancy in place of trivalent cations) have been found and studied. Electron paramagnetic resonance has been used to investigate local paramagnetic centers that are not detected using X-ray diffraction. The angular dependence of the spectra indicates a local distortion of the cubic symmetry of the crystals. An additional hyperfine structure in the observed spectra is due to the delocalization of electrons over six F− ions forming the first coordination polyhedron around the vacancy. The crystals studied are characterized by a high electron mobility and a high electron velocity, which depends on the impurity. The high mobility of electrons of the cation center can be indirectly responsible for the structural phase transition occurring in the ScF3 crystal under uniaxial pressure.
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Доп.точки доступа:
Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Воронов, Владимир Николаевич
Аннотация: In ScF3 single crystals (pure and doped) as well as in Rb2KScF6 and Rb2KDyF6 crystals with a perovskite-like structure, point nanodefects (vacancy in place of trivalent cations) have been found and studied. Electron paramagnetic resonance has been used to investigate local paramagnetic centers that are not detected using X-ray diffraction. The angular dependence of the spectra indicates a local distortion of the cubic symmetry of the crystals. An additional hyperfine structure in the observed spectra is due to the delocalization of electrons over six F− ions forming the first coordination polyhedron around the vacancy. The crystals studied are characterized by a high electron mobility and a high electron velocity, which depends on the impurity. The high mobility of electrons of the cation center can be indirectly responsible for the structural phase transition occurring in the ScF3 crystal under uniaxial pressure.
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Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Воронов, Владимир Николаевич
Synthesis and structural properties of cubic G0-Rb2KMoO3F3 oxyfluoride
/ V. V. Atuchin [et al.]> // Ceram. Int. - 2012. - Vol. 38, Is. 3. - P. 2455-2459, DOI 10.1016/j.ceramint.2011.11.013. - Cited References: 23. - This study was partly supported by RFBR (Grant 09-02-00062) and SB RAS (Grant 34).
. - ISSN 0272-8842
РУБ Materials Science, Ceramics
Аннотация: High-temperature G0 polymorph of Rb2KMoO3F3 has been prepared by melt solidification. Micromorphology and chemical properties of the final product were evaluated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The elpasolite-related crystal structure of G0-Rb2KMoO3F3 has been refined by Rietveld method at T = 298 K (space group Fm-3m, a = 8.92446(8) Å, V = 710.76(1) Å3; RB = 3.55%). Ferroelectric G1-Rb2KMoO3F3 polymorph, earlier reported at T˂328 K, is not found at T = 298 K.
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Держатели документа:
[Atuchin, V. V.] SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090 90, Russia
[Gavrilova, T. A.] SB RAS, Inst Semicond Phys, Lab Nanolithog & Nanodiagnost, Novosibirsk 630090 90, Russia
[Isaenko, L. I.
Zhurkov, S. A.] SB RAS, Inst Geol & Mineral, Lab Crystal Growth, Novosibirsk 530090 90, Russia
[Kesler, V. G.] SB RAS, Inst Semicond Phys, Lab Phys Principles Integrated Microelect, Novosibirsk 630090 90, Russia
[Molokeev, M. S.] SB RAS, Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036 36, Russia
Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Isaenko, L. I.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhurkov, S. A.
Рубрики:
PHASE-TRANSITIONS
FERROELECTRIC K3WO3F3
(NH4)(3)MOO3F3
TEMPERATURE
PEROVSKITE
ELPASOLITE
CRYSTALS
BEHAVIOR
High temperature
Melt solidification
Micromorphologies
Melt solidification
Microstructure-final
Oxyfluorides
Space Groups
Oxyfluorides
X ray methods
Кл.слова (ненормированные):
Powders: solid state reaction -- Microstructure-final -- X-ray methods -- Alkali oxides -- Halides
PHASE-TRANSITIONS
FERROELECTRIC K3WO3F3
(NH4)(3)MOO3F3
TEMPERATURE
PEROVSKITE
ELPASOLITE
CRYSTALS
BEHAVIOR
High temperature
Melt solidification
Micromorphologies
Melt solidification
Microstructure-final
Oxyfluorides
Space Groups
Oxyfluorides
X ray methods
Кл.слова (ненормированные):
Powders: solid state reaction -- Microstructure-final -- X-ray methods -- Alkali oxides -- Halides
Аннотация: High-temperature G0 polymorph of Rb2KMoO3F3 has been prepared by melt solidification. Micromorphology and chemical properties of the final product were evaluated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The elpasolite-related crystal structure of G0-Rb2KMoO3F3 has been refined by Rietveld method at T = 298 K (space group Fm-3m, a = 8.92446(8) Å, V = 710.76(1) Å3; RB = 3.55%). Ferroelectric G1-Rb2KMoO3F3 polymorph, earlier reported at T˂328 K, is not found at T = 298 K.
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Держатели документа:
[Atuchin, V. V.] SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090 90, Russia
[Gavrilova, T. A.] SB RAS, Inst Semicond Phys, Lab Nanolithog & Nanodiagnost, Novosibirsk 630090 90, Russia
[Isaenko, L. I.
Zhurkov, S. A.] SB RAS, Inst Geol & Mineral, Lab Crystal Growth, Novosibirsk 530090 90, Russia
[Kesler, V. G.] SB RAS, Inst Semicond Phys, Lab Phys Principles Integrated Microelect, Novosibirsk 630090 90, Russia
[Molokeev, M. S.] SB RAS, Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036 36, Russia
Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Isaenko, L. I.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhurkov, S. A.
Synthesis some oxides with structure type perovskite
/ V. N. Voronov [и др.] ; Таврический нац. ун-т им. В.И. Вернадского> // Functional Materials : Abstracts : [Partenit, Crimea, Ukraine, 29 сентября-05 октября 2013 г.] / ed. V. N. Berzhansky. - Simferopol, 2013. - Ст. EP2-12P/11. - P. 488
. - ISBN 978-966-491-465-6
Перевод заглавия: Синтезы некоторых оксидов со структурой типа перовскита
Материалы конференции,
Материалы конференции
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Berzhansky, V. N. \ed.\; Бержанский, Владимир Наумович; Voronov, V. N.; Воронов, Владимир Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Vereshchagin, S. N.; Shishkina, N. N.; Шишкина, Нина Николаевна; Таврический национальный университет им. В.И. Вернадского; International Conference "Functional Materials"(7 ; 2013 ; Sept. ; Partenit, Crimea)
Перевод заглавия: Синтезы некоторых оксидов со структурой типа перовскита
Материалы конференции,
Материалы конференции
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Berzhansky, V. N. \ed.\; Бержанский, Владимир Наумович; Voronov, V. N.; Воронов, Владимир Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Vereshchagin, S. N.; Shishkina, N. N.; Шишкина, Нина Николаевна; Таврический национальный университет им. В.И. Вернадского; International Conference "Functional Materials"(7 ; 2013 ; Sept. ; Partenit, Crimea)
Layer perovskite-like crystals with CsCl-type blocks
/ B. V. Beznosikov, K. S. Aleksandrov> // Crystallogr. Rep. - 2001. - Vol. 46, Is. 2. - P. 246-252, DOI 10.1134/1.1358402. - Cited References: 17
. - ISSN 1063-7745
Аннотация: The crystal chemistry of layer perovskite-like structures with CsCl-type blocks have been analyzed. Some characteristic features of their formation are described and new praphases are derived, possible oxyhalides and oxides are indicated. (C) 2001 MAIK "Nauka/Interperiodica".
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Держатели документа:
Russian Acad Sci, Siberian Div, Inst Phys, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Аннотация: The crystal chemistry of layer perovskite-like structures with CsCl-type blocks have been analyzed. Some characteristic features of their formation are described and new praphases are derived, possible oxyhalides and oxides are indicated. (C) 2001 MAIK "Nauka/Interperiodica".
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Держатели документа:
Russian Acad Sci, Siberian Div, Inst Phys, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Structural distortions in families of perovskite-like crystals
/ K. S. Aleksandrov, J. . Bartolome> // Phase Transit. - 2001. - Vol. 74, Is. 3. - P. 255-335, DOI 10.1080/01411590108228754. - Cited References: 262
. - ISSN 0141-1594
РУБ Crystallography + Physics, Condensed Matter
Аннотация: The crystallographic and group theoretical analysis of the structural phase transitions in perovskite and perovskite-like crystals is reviewed. We include ABX(3) perovskites and their relative crystals of ReO3 type (G(0) = O-h(1)), elpasolites, cryolites and their relatives (G(0) = O-h(5)) layered crystals of TIAIF(4) series (G(0) = D-4h(1)), Aurivillius and Ruddlesden-Popper series (G(0) = D-4h(17)). The structures in their initial phase G(0) often contain n layers (n = 1, 2,3) of vertex linked octahedra. The distorted phases produced by one kind of tilt and by superposition of tilts in the slabs are enumerated. Most of the tilts correspond to symmetry changes, which can be associated to definite librational lattice modes irreducible representations of the G(0) group. The softening of modes associated to the PT has been found experimentally in many perovskites, elpasolites and layered crystals with n = 1. In contrast, no such soft modes have been found yet for even-layered (n = 2) crystals. Examples of successive phase transitions due to the superposition of tilts in these types of crystals have been collected.
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Держатели документа:
LV Kirenskii Inst Phys, Siberian Branch, Russian Acad Sci, Krasnoyarsk 660036, Russia
Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Zaragoza, Spain
ИФ СО РАН
Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
Рубрики:
LOW-TEMPERATURE PHASE
INELASTIC-NEUTRON-SCATTERING
POWDER PROFILE REFINEMENT
MII = CO
X-RAY
RAMAN-SCATTERING
ORDERED PEROVSKITE
RHOMBOHEDRAL PEROVSKITES
RB2KMIIIF6 ELPASOLITES
MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
structural phase transitions -- perovskites -- perovskite-like crystals -- group theoretical classification
LOW-TEMPERATURE PHASE
INELASTIC-NEUTRON-SCATTERING
POWDER PROFILE REFINEMENT
MII = CO
X-RAY
RAMAN-SCATTERING
ORDERED PEROVSKITE
RHOMBOHEDRAL PEROVSKITES
RB2KMIIIF6 ELPASOLITES
MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
structural phase transitions -- perovskites -- perovskite-like crystals -- group theoretical classification
Аннотация: The crystallographic and group theoretical analysis of the structural phase transitions in perovskite and perovskite-like crystals is reviewed. We include ABX(3) perovskites and their relative crystals of ReO3 type (G(0) = O-h(1)), elpasolites, cryolites and their relatives (G(0) = O-h(5)) layered crystals of TIAIF(4) series (G(0) = D-4h(1)), Aurivillius and Ruddlesden-Popper series (G(0) = D-4h(17)). The structures in their initial phase G(0) often contain n layers (n = 1, 2,3) of vertex linked octahedra. The distorted phases produced by one kind of tilt and by superposition of tilts in the slabs are enumerated. Most of the tilts correspond to symmetry changes, which can be associated to definite librational lattice modes irreducible representations of the G(0) group. The softening of modes associated to the PT has been found experimentally in many perovskites, elpasolites and layered crystals with n = 1. In contrast, no such soft modes have been found yet for even-layered (n = 2) crystals. Examples of successive phase transitions due to the superposition of tilts in these types of crystals have been collected.
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Держатели документа:
LV Kirenskii Inst Phys, Siberian Branch, Russian Acad Sci, Krasnoyarsk 660036, Russia
Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Zaragoza, Spain
ИФ СО РАН
Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
Layered perovskite-like crystals with (Al+Cl) stacks in the structure
/ B. V. Beznosikov, K. S. Aleksandrov> // J. Struct. Chem. - 2000. - Vol. 41, Is. 6. - P. 1004-1008, DOI 10.1023/A:1010363124148. - Cited References: 16
. - ISSN 0022-4766
Аннотация: Crystal-chemical analysis has been performed on layered perovskite-like structures with (Al+Cl) binary stacks, which are combinations of anionic octahedra with halves of degenerate octahedra (semioctahedra). Crystal data are reported for 56 possible prephases, of which 54 are new ones. Recommendations for syntheses of new compounds are given.
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Держатели документа:
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Аннотация: Crystal-chemical analysis has been performed on layered perovskite-like structures with (Al+Cl) binary stacks, which are combinations of anionic octahedra with halves of degenerate octahedra (semioctahedra). Crystal data are reported for 56 possible prephases, of which 54 are new ones. Recommendations for syntheses of new compounds are given.
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Держатели документа:
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Perovskite-like crystals of the Ruddlesden-Popper series
/ B. V. Beznosikov, K. S. Aleksandrov> // Crystallogr. Rep. - 2000. - Vol. 45, Is. 5. - P. 792-798, DOI 10.1134/1.1312923. - Cited References: 28
. - ISSN 1063-7745
РУБ Crystallography
Аннотация: The layer perovskite-like structures of the so-called Ruddlesden-Popper phases have been analyzed in terms of crystal chemistry. The geometrical boundaries of the existence ranges of these compounds with multilayer stacks are determined and new phases of this type are predicted. The possible variants of related structures are also considered. (C) 2000 MAIK "Nauka/Interperiodica".
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Держатели документа:
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Аннотация: The layer perovskite-like structures of the so-called Ruddlesden-Popper phases have been analyzed in terms of crystal chemistry. The geometrical boundaries of the existence ranges of these compounds with multilayer stacks are determined and new phases of this type are predicted. The possible variants of related structures are also considered. (C) 2000 MAIK "Nauka/Interperiodica".
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Держатели документа:
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Phase transition in the layered perovskite CsScF4 induced by hydrostatic pressure
/ K. S. Aleksandrov [et al.]> // Phys. Solid State. - 1999. - Vol. 41, Is. 9. - P. 1541-1543, DOI 10.1134/1.1131019. - Cited References: 9
. - ISSN 1063-7834
РУБ Physics, Condensed Matter
Аннотация: Using polarization microscopy and Raman scattering, we have discovered a new phase transition in the layered perovskite crystal CsScF4 under a hydrostatic pressure around 6 GPa. The proposed space group of the high-pressure phase is C-2h(2), Z=4. (C) 1999 American Institute of Physics. [S1063-7834(99)03109-3].
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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Unified Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Shmygol', I. V.; Шмыголь И. В.; Goryainov, S. V.; Горяйнов, Сергей Владимирович
Рубрики:
SPECTRUM
SPECTRUM
Аннотация: Using polarization microscopy and Raman scattering, we have discovered a new phase transition in the layered perovskite crystal CsScF4 under a hydrostatic pressure around 6 GPa. The proposed space group of the high-pressure phase is C-2h(2), Z=4. (C) 1999 American Institute of Physics. [S1063-7834(99)03109-3].
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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Unified Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Shmygol', I. V.; Шмыголь И. В.; Goryainov, S. V.; Горяйнов, Сергей Владимирович
Architecture and properties of perovskite-like crystals
/ K. S. Aleksandrov, B. V. Beznosikov> // Ferroelectrics. - 1999. - Vol. 226, Is. 1-4. - P. 1-9, DOI 10.1080/00150199908230285. - Cited References: 9
. - ISSN 0015-0193
РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Кл.слова (ненормированные):
perovskites -- perovskite-like crystals -- new representatives of Ruddlesden-Popper's phases -- New representatives of Ruddlesden-Popper's phases -- Perovskite-like crystals -- Perovskites
Аннотация: A variety of the known structures of perovskite-like crystals including cation- and anion-deficient phases were considered as the intergrowth systems of slabs containing n-layers (n = 1,2, 3,...infinity) of corner-linked octahedra BX6, pyramids EX5 or square-planar nets BX4 (B-cation, X- anion) linked by intermediate blocks of different types.([1- 3]) Some new structural types and new representatives of ferroelectrics, ferroelastics and HTSC's can be constructed on this basis. The prognosis of new possible representatives in Ruddlesden-Popper's family is discussed.
A variety of the known structures of perovskite-like crystals including cation- and anion-deficient phases were considered as the intergrowth systems of slabs containing n-layers (n = 1, 2, 3, . . . ?) of corner-linked octahedra BX6, pyramids BX5 or square-planar nets BX4 (B-cation, X-anion) linked by intermediate blocks of different types.[1-3] Some new structural types and new representatives of ferroelectrics, ferroelastics and HTSC's can be constructed on this basis. The prognosis of new possible representatives in Ruddlesden-Popper's family is discussed.
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Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич; USA-CIS-Baltic Seminar on Ferroelectricity(3 ; Jun 01-06, 1997 ; Bozeman, Montana)
Кл.слова (ненормированные):
perovskites -- perovskite-like crystals -- new representatives of Ruddlesden-Popper's phases -- New representatives of Ruddlesden-Popper's phases -- Perovskite-like crystals -- Perovskites
Аннотация: A variety of the known structures of perovskite-like crystals including cation- and anion-deficient phases were considered as the intergrowth systems of slabs containing n-layers (n = 1,2, 3,...infinity) of corner-linked octahedra BX6, pyramids EX5 or square-planar nets BX4 (B-cation, X- anion) linked by intermediate blocks of different types.([1- 3]) Some new structural types and new representatives of ferroelectrics, ferroelastics and HTSC's can be constructed on this basis. The prognosis of new possible representatives in Ruddlesden-Popper's family is discussed.
A variety of the known structures of perovskite-like crystals including cation- and anion-deficient phases were considered as the intergrowth systems of slabs containing n-layers (n = 1, 2, 3, . . . ?) of corner-linked octahedra BX6, pyramids BX5 or square-planar nets BX4 (B-cation, X-anion) linked by intermediate blocks of different types.[1-3] Some new structural types and new representatives of ferroelectrics, ferroelastics and HTSC's can be constructed on this basis. The prognosis of new possible representatives in Ruddlesden-Popper's family is discussed.
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Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич; USA-CIS-Baltic Seminar on Ferroelectricity(3 ; Jun 01-06, 1997 ; Bozeman, Montana)
Hierarchies of perovskite-like crystals (Review)
/ K. S. Aleksandrov, V. V. Beznosikov> // Phys. Solid State. - 1997. - Vol. 39, Is. 5. - P. 695-715, DOI 10.1134/1.1130120. - Cited References: 143
. - ISSN 1063-7834
Рубрики:
CU-O SYSTEM
HIGH-PRESSURE SYNTHESIS
SUPERCONDUCTING COPPER OXIDES
STRUCTURAL PHASE-TRANSITIONS
NEUTRON POWDER DIFFRACTION
SINGLE-CRYSTAL
X-RAY
CUPRATE SUPERCONDUCTORS
DIELECTRIC-PROPERTIES
HOMOLOGOUS SERIES
Аннотация: A system of mutual relationships (a hierarchy) is constructed between various perovskite-like crystal structures based on available structural data. All the perovskite-like structures are characterized by a common indicator of their relationship-the presence of layers, stacks, or frameworks made up of BX6 octahedra linked at their vertices (where B is a cation, X is an anion) or fragments of octahedra in the form of BX5 pyramids or BX4 squares in anion-deficient compounds. In layered structures, these stacks are joined to each other by various intermediate blocks. It is well known that one homological series of compounds is constructed by increasing the number of layers in a stack while preserving the same kind of connecting block. Crystals of various series that contain identical stacks (but different blocks of one or two types) can also be related to one another via this feature. The hierarchical system includes compounds with small distortions in their structures for various reasons. (C) 1997 American Institute of Physics.
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Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
Рубрики:
CU-O SYSTEM
HIGH-PRESSURE SYNTHESIS
SUPERCONDUCTING COPPER OXIDES
STRUCTURAL PHASE-TRANSITIONS
NEUTRON POWDER DIFFRACTION
SINGLE-CRYSTAL
X-RAY
CUPRATE SUPERCONDUCTORS
DIELECTRIC-PROPERTIES
HOMOLOGOUS SERIES
Аннотация: A system of mutual relationships (a hierarchy) is constructed between various perovskite-like crystal structures based on available structural data. All the perovskite-like structures are characterized by a common indicator of their relationship-the presence of layers, stacks, or frameworks made up of BX6 octahedra linked at their vertices (where B is a cation, X is an anion) or fragments of octahedra in the form of BX5 pyramids or BX4 squares in anion-deficient compounds. In layered structures, these stacks are joined to each other by various intermediate blocks. It is well known that one homological series of compounds is constructed by increasing the number of layers in a stack while preserving the same kind of connecting block. Crystals of various series that contain identical stacks (but different blocks of one or two types) can also be related to one another via this feature. The hierarchical system includes compounds with small distortions in their structures for various reasons. (C) 1997 American Institute of Physics.
WOS
Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
Effect of hydrostatic-pressure on phase-transitions in perovskite-like ferroelastics
/ I. N. Flerov, M. V. Gorev, K. S. Aleksandrov> // Fiz. Tverd. Tela. - 1993. - Vol. 35, Is. 6. - P. 1657-1666. - Cited References: 41
. - ISSN 0367-3294
WOS
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Флёров, Игорь Николаевич
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Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Флёров, Игорь Николаевич
Study of structural phase-transitions in the double-layer perovskite-like crystal Rb3CD2Cl7
/ K. S. Aleksandrov [и др.]> // Fiz. Tverd. Tela. - 1988. - Vol. 30, Is. 12. - P. 3652-3659. - Cited References: 14
. - ISSN 0367-3294
WOS
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Kokov, I. T.; Melnikova, S. V.; Мельникова, Светлана Владимировна; Misyul, S. V.; Мисюль, Сергей Валентинович; Flerov, I. N.; Флёров, Игорь Николаевич
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Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Kokov, I. T.; Melnikova, S. V.; Мельникова, Светлана Владимировна; Misyul, S. V.; Мисюль, Сергей Валентинович; Flerov, I. N.; Флёров, Игорь Николаевич
Successive structural phase-transitions in layered perovskite-like crystals .1. Crystals of the TLALF4 type
/ K. S. Aleksandrov> // Kristallografiya. - 1987. - Vol. 32, Is. 3. - P. 661-672 ; Crystallogr. Rep. - Cited References: 28
. - ISSN 0023-4761
WOS
Доп.точки доступа:
Александров, Кирилл Сергеевич
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Доп.точки доступа:
Александров, Кирилл Сергеевич
Crystallographic classification of distortions in layer perovskite-like crystals of K2NiF4 type. Structural phase-transition in Rb2CdCl4
/ K. S. Aleksandrov [et al.]> // Phase Transit. - 1987. - Vol. 8, Is. 4. - P. 352. - Cited References: 3
. - ISBN 0141-1594
WOS
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Beznosikov, B. V.; Безносиков, Борис Валерьевич; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Kruglik, A. I.; Круглик, Анатолий Иванович; European crystallographic meeting(10 ; 1986 ; Aug ; 5-9 ; Wroclaw, Poland)
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Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Beznosikov, B. V.; Безносиков, Борис Валерьевич; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Kruglik, A. I.; Круглик, Анатолий Иванович; European crystallographic meeting(10 ; 1986 ; Aug ; 5-9 ; Wroclaw, Poland)
Steric factor effects on ionic mobility processes in perovskite-like structure compounds
/ V. N. Voronov, K. S. Aleksandrov> // Fiz. Tverd. Tela. - 1985. - Vol. 27, Is. 7. - P. 1968-1976. - Cited References: 32
. - ISSN 0367-3294
WOS
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Воронов, Владимир Николаевич
WOS
Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Воронов, Владимир Николаевич
Crystal-chemistry, phase-transitions, and physical-properties of halide crystals with perovskite-like structure
/ B. V. Beznosikov, A. T. Anistratov, K. S. Aleksandrov> // Inorg. Mater. - 1982. - Vol. 18, Is. 10. - P. 1406-1411. - Cited References: 13
. - ISSN 0020-1685
WOS
Доп.точки доступа:
Anistratov, A. T.; Анистратов, Анатолий Тихонович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
WOS
Доп.точки доступа:
Anistratov, A. T.; Анистратов, Анатолий Тихонович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
Low-temperature synthesis and structural properties of ferroelectric K 3WO3F3 elpasolite
/ V. V. Atuchin [et al.]> // Chem. Phys. Lett. - 2010. - Vol. 493, Is. 1-3. - P. 83-86, DOI 10.1016/j.cplett.2010.05.023. - Cited References: 37
. - ISSN 0009-2614
Рубрики:
PEROVSKITE-LIKE OXYFLUORIDES
CORE-LEVEL SPECTROSCOPY
PHASE-TRANSITIONS
SOLID-STATE
ELECTRON-DIFFRACTION
DIFFUSE-SCATTERING
RHEED ANALYSIS
POLAR
BEHAVIOR
(NH4)(3)TIOF5
Кл.слова (ненормированные):
Chemical synthesis -- Elpasolite -- Ferroelectric phase transition -- Fluorine atoms -- Low temperature synthesis -- Low temperatures -- Oxyfluorides -- Partial ordering -- Room temperature -- SEM -- Space Groups -- Structure parameter -- XRD -- Chemical properties -- Ferroelectric materials -- Ferroelectricity -- Fluorine -- Oxygen -- Phase transitions -- Rietveld method -- Single crystals -- Synthesis (chemical) -- X ray photoelectron spectroscopy -- X ray powder diffraction -- Scanning electron microscopy
Аннотация: Low-temperature ferroelectric G2 polymorph of K3WO 3F3 has been prepared by chemical synthesis. Structural and chemical properties of the final product have been evaluated with X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Structure parameters of G2-K 3WO3F3 are refined by the Rietveld method from XRD data measured at room temperature (space group Cm, Z = 2, a = 8.7350(3), b = 8.6808(5), c = 6.1581(3), ? = 135.124(3), V = 329.46(3) 3; RB = 2.47%). Partial ordering of oxygen and fluorine atoms has been found over anion positions. Mechanism of ferroelectric phase transition in A2BMO3F3 oxyfluorides is discussed. В© 2010 Elsevier B.V. All rights reserved.
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Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Nanolithography and Nanodiagnostics, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Physical Principles for Integrated Microelectronics, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Crystal Physics, Institute of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
Рубрики:
PEROVSKITE-LIKE OXYFLUORIDES
CORE-LEVEL SPECTROSCOPY
PHASE-TRANSITIONS
SOLID-STATE
ELECTRON-DIFFRACTION
DIFFUSE-SCATTERING
RHEED ANALYSIS
POLAR
BEHAVIOR
(NH4)(3)TIOF5
Кл.слова (ненормированные):
Chemical synthesis -- Elpasolite -- Ferroelectric phase transition -- Fluorine atoms -- Low temperature synthesis -- Low temperatures -- Oxyfluorides -- Partial ordering -- Room temperature -- SEM -- Space Groups -- Structure parameter -- XRD -- Chemical properties -- Ferroelectric materials -- Ferroelectricity -- Fluorine -- Oxygen -- Phase transitions -- Rietveld method -- Single crystals -- Synthesis (chemical) -- X ray photoelectron spectroscopy -- X ray powder diffraction -- Scanning electron microscopy
Аннотация: Low-temperature ferroelectric G2 polymorph of K3WO 3F3 has been prepared by chemical synthesis. Structural and chemical properties of the final product have been evaluated with X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Structure parameters of G2-K 3WO3F3 are refined by the Rietveld method from XRD data measured at room temperature (space group Cm, Z = 2, a = 8.7350(3), b = 8.6808(5), c = 6.1581(3), ? = 135.124(3), V = 329.46(3) 3; RB = 2.47%). Partial ordering of oxygen and fluorine atoms has been found over anion positions. Mechanism of ferroelectric phase transition in A2BMO3F3 oxyfluorides is discussed. В© 2010 Elsevier B.V. All rights reserved.
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Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Nanolithography and Nanodiagnostics, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Physical Principles for Integrated Microelectronics, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Crystal Physics, Institute of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
Effect of hydrostatic pressure on phase transitions in perovskite-like ferroelastics
/ I. N. Flerov, M. V. Gorev, K. S. Aleksandrov> // Ferroelectrics : Proceedings of the 1994 5th Russian-Japanese Symposium on Ferroelectricity. Part 2 (of 2). - 1995. - Vol. 169, Is. 1. - P. 199-205, DOI 10.1080/00150199508217330
. - ISSN 0015-0193
Кл.слова (ненормированные):
Crystals -- Hydrostatic pressure -- Mathematical models -- Perovskite -- Phase transitions -- Pressure effects -- Thermodynamics -- Perovskite like ferroelastics -- Ferroelectric materials
Аннотация: The analysis of hydrostatic pressure influence on ferroelastic phase transitions in three- and two-dimensional perovskite-like crystals is carried out. The nonlinear effects and the change of the dT0/dp sign are discussed on the ground of the thermodynamic theory. Simple model of rigid spheres is used to connect the T0 shift under pressure with the bonds stresses.
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Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Флёров, Игорь Николаевич; Russian-Japanese symposium on ferroelectricity(1994 ; Aug. ; 22-27 ; Moscow)
Кл.слова (ненормированные):
Crystals -- Hydrostatic pressure -- Mathematical models -- Perovskite -- Phase transitions -- Pressure effects -- Thermodynamics -- Perovskite like ferroelastics -- Ferroelectric materials
Аннотация: The analysis of hydrostatic pressure influence on ferroelastic phase transitions in three- and two-dimensional perovskite-like crystals is carried out. The nonlinear effects and the change of the dT0/dp sign are discussed on the ground of the thermodynamic theory. Simple model of rigid spheres is used to connect the T0 shift under pressure with the bonds stresses.
Scopus,
Смотреть статью
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Флёров, Игорь Николаевич; Russian-Japanese symposium on ferroelectricity(1994 ; Aug. ; 22-27 ; Moscow)