Главная
Авторизация
Фамилия
Пароль
Регистрация
Библиотека института физики им. Л.В. Киренского СО РАН
Базы данных
Труды сотрудников ИФ СО РАН - результаты поиска
Вид поиска
Каталог книг и брошюр библиотеки ИФ СО РАН
Каталог журналов библиотеки ИФ СО РАН
Труды сотрудников ИФ СО РАН
Область поиска
Ключевые слова
Автор
Заглавие
Год издания
Место работы автора
в найденном
Формат представления найденных документов:
полный
информационный
краткий
Отсортировать найденные документы по:
автору
заглавию
году издания
типу документа
Поисковый запрос:
(<.>S=PHASE-TRANSITIONS<.>)
Общее количество найденных документов
:
57
Показаны документы
с 1 по 20
1.
Caloric and multicaloric
effects in oxygen ferroics and multiferroics / I. N. Flerov [et al.]> // Phys. Solid State. - 2015. -
Vol. 57
,
Is. 3
. - P. 429-441,
DOI
10.1134/S1063783415030075. - Cited References:53. - This study was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-924.2014.2). . - ISSN 1063. - ISSN 1090-6460. -
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
MAGNETOCALORIC MATERIALS
ELECTROCALORIC MATERIALS
REFRIGERATION
CERAMICS
OXYFLUORIDES
Аннотация:
The main problems of the current state-of-the-art research into the caloric effects observed in oxygen ferroics, multiferroics, and composites, as well as the influence of different factors (anisotropy, dimensional parameters, direct and indirect interferroic interactions) on these effects, have been considered. Possible ways to increase the caloric efficiency of materials have been analyzed.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Публикация на русском языке
Калорические и мультикалорические эффекты в кислородных ферроиках и мультиферроиках [Текст] / И. Н. Флёров [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2015. - Т. 57 Вып. 3. - С. 421-431
Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Gorev, M. V.; Горев, Михаил Васильевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Всероссийская конференция по физике сегнетоэлектриков(20 ; 2014 ; 18-22 авг. ; Красноярск)
}
Найти похожие
2.
Calorimetric and dielectric
studies of the (NH4)(2)MoO2F4 oxyfluoride / V. D. Fokina [et al.]> // Phys. Solid State. - 2010. -
Vol. 52
,
Is. 1
. - P. 158-166,
DOI
10.1134/S1063783410010282. - Cited References: 22. - This study was supported by the Russian Foundation for Basic Research ( project no. 09-02-00062). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
(NH4)(2)WO2F4
DIFFRACTION
MECHANISM
CRYSTALS
Аннотация:
The temperature dependences of the heat capacity, dielectric properties, and response to an external pressure and an electric field for the (NH4)(2)MoO2F4 oxyfluoride (space group Cmcm, Z = 4) have been studied. A comparative analysis of the data on the entropy of
phase
transitions
, p-T
phase
diagrams, permittivity, and anomalous heat capacity in combination with the results of previous studies of the related compounds (NH4)(2)WO2F4 and (ND4)(2)WO2F4 has made it possible to establish that both [MO2F4](2-) anions and ammonium groups play a substantial role in the mechanism and nature of the structural transformations.
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
[Fokina, V. D.
Bogdanov, E. V.
Bondarev, V. S.
Flerov, I. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Fokina, V. D.
Pogorel'tsev, E. I.
Bondarev, V. S.
Flerov, I. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Laptash, N. M.] Russian Acad Sci, Far Eastern Branch, Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobody 79, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation
Доп.точки доступа:
Fokina, V. D.; Фокина, Валентина Дмитриевна; Bogdanov, E. V.; Богданов, Евгений Витальевич; Pogorel'tsev, E. I.; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
}
Найти похожие
3.
Calorimetric and x-ray
diffraction studies of the (NH4)(3)WO3F3 and (NH4)(3)TiOF5 perovskite-like oxyfluorides / I. N. Flerov [et al.]> // Phys. Solid State. - 2004. -
Vol. 46
,
Is. 5
. - P. 915-921,
DOI
10.1134/1.1744971. - Cited References: 11 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
ELPASOLITE
K3MOO3F3
Аннотация:
The heat capacity and unit cell parameters of the (NH4)(3)WO3F3 and (NH4)(3)TiOF5 perovskite-like oxyfluorides were measured in the temperature interval from 80 to 300 K; the existence of two and one
phase
transitions
in these compounds, respectively, was demonstrated, and their thermodynamic parameters were determined. The effect of a hydrostatic pressure of up to 0.5 GPa on the
phase
transition temperatures was studied. Triple points and high-pressure phases were found in the T vs. p diagrams. An analysis of entropy changes suggests that all the structural transformations revealed are associated with the ordering of structural blocks. (C) 2004 MAIK "Nauka / Interperiodica".
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Chem, Far E Div, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry, Far East Division, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022, Russian Federation
Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Fokina, V. D.; Фокина, Валентина Дмитриевна; Bovina, A. F.; Бовина, Ася Федоровна; Laptash, N. M.
}
Найти похожие
4.
Chemical exchange in
NH4HSeO4 single crystals studied by two-dimensional H-2 nuclear magnetic resonance / Y. N. Ivanov [et al.]> // J. Phys.: Condens. Matter. - 1999. -
Vol. 11
,
Is. 18
. - P. 3751-3760,
DOI
10.1088/0953-8984/11/18/310. - Cited References: 16 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
CONDUCTIVITY PROCESSES
AMMONIUM
Кл.слова (ненормированные):
Hydrogen bonds
--
Nuclear magnetic resonance
--
Single crystals
--
Thermal effects
--
Ammonium hydrogen selenate
--
Ammonium compounds
Аннотация:
Processes of chemical exchange of deuterons in partially deuterated ammonium hydrogen selenate, NH4HSeO4 (AHSe), crystals are investigated by means of H-2 nuclear magnetic resonance (NMR) experiments over a wide temperature range. The temperature dependencies of the quadrupole line splittings in the one-dimensional spectra of AHSe above 350 K revealed lineshape changes which are characteristic for chemical exchange processes. A detailed study of these exchange processes in AHSe is achieved by means of two-dimensional H-2 NMR experiments. In the temperature range investigated, a chemical exchange occurs only between those deuteron (proton) sites which are involved in hydrogen bonds (alpha- and beta-positions). It was established that the rates of exchange between all types of hydrogen-bound deuteron are approximately the same. Exchange between these positions and the deuterons in the ND4 groups could not be detected. On the basis of our findings, we finally discuss a model for the microscopic mechanism of hydrogen transport in AHSe.
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany
ИФ СО РАН
L V Kirensky Institute of Physics, Russian Academy of Science, Siberian Branch, 660036 Krasnoyarsk, Russian Federation
Universitat Leipzig, Fakultat fur Physik und Geowissenschaften, Linnestra?e 5, D-04103 Leipzig, Germany
Доп.точки доступа:
Ivanov, Y. N.; Иванов, Юрий Николаевич; Totz, J.; Michel, D.; Klotzsche, G.; Sukhovsky, A. A.; Суховский, Андрей Андреевич; Aleksandrova, I. P.; Александрова, Инга Петровна
}
Найти похожие
5.
Crystal and local
structure refinement in Ca2Al3O6F explored by X-ray diffraction and Raman spectroscopy / Z. G. Xia [et al.]> // Phys. Chem. Chem. Phys. - 2014. -
Vol. 16
,
Is. 13
. - P. 5952-5957,
DOI
10.1039/c3cp53816h. - Cover illustration: Graphical abstract from this article. - Cited References: 34. - This present work was supported by the National Natural Science Foundations of China (Grant No. 51002146, 51272242), Natural Science Foundations of Beijing (2132050), the Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-12-0950), Beijing Nova Program (Z131103000413047) and Beijing Youth Excellent Talent Program (YETP0635), and this study was also partially supported by SB RAS, Grant 28.13. Part of the work was supported by the National Science Council of Taiwan under contract No. NSC 101-2113-M-002-014-MY3. . - ISSN 1463-9076. - ISSN 1463-9084
Перевод заглавия:
Уточнение кристаллической и локальной структуры в Ca2Al3O6F при помощи рентгеновской дифракции и Рамановской спектроскопии
РУБ
Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
EMITTING OXYFLUORIDE PHOSPHOR
PHASE
-
TRANSITIONS
SOLID-STATE
FLUORIDES
DIODES
Аннотация:
We present a combined structural analysis on the powder of the Ca2Al3O6F
phase
using X-ray diffraction (XRD) and Raman spectroscopy techniques. The crystal structure of Ca2Al3O6F has been refined in the rhombohedral system, R space group, a = 17.3237(7) Å, c = 7.00017(4) Å, V = 1819.38(2) Å3, Z = 6. The Ca2Al3O6F
phase
consists of almost ideal AlO4 tetrahedrons linked through corners, Ca2+ ions in voids, and F− ions disordered over 6 sites around the Ca2 ion. The two different Ca sites have also been verified by the photoluminescence spectrum and decay curves using Eu2+ as the probe ion substituted onto the Ca2+ sites. A lattice dynamics simulation based on the simplified version of the Born–Karman potential model has been produced. Calculated Raman phonon modes agree qualitatively well with the experimental data. The calculations show that the strong line at 538 cm−1 (Ag) corresponds to the vibrational mode of a six-membered AlO4 tetrahedrons ring, and the line at 572 cm−1 (Ag) corresponds to the full symmetric vibration of fluorine atoms in the ab crystal plane.
Смотреть статью
,
Scopus
,
WoS
,
Читать в сети ИФ
Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Krasnoyarsk 660036, Russia
SB RAS, LV Kirensky Phys Inst, Lab Mol Spect, Krasnoyarsk 660036, Russia
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090 90, Russia
Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan
Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
Доп.точки доступа:
Xia, Zhiguo; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Atuchin, V. V.; Liu, R. S.; Dong, C.
}
Найти похожие
6.
Effect of a
restricted geometry on thermal and dielectric properties of NH4HSO4 ferroelectric / E. A. Mikhaleva [et al.]> // Ferroelectrics. - 2017. -
Vol. 513
,
Is. 1
. - P. 44-50,
DOI
10.1080/00150193.2017.1350436. - Cited References:17. - The reported study was partially supported by the Russian Foundation for Basic Research (RFBR), research project No. 16-32-00092 mol_a. . - ISSN 0015-0193. - ISSN 1563-5112
Перевод заглавия:
Влияние ограниченной геометрии на тепловые и диэлектрические свойства сегнетоэлектриков NH4HSO4
РУБ
Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
AMMONIUM
CAPACITY
SULFATE
KH2PO4
Кл.слова (ненормированные):
Ferroelectric
--
phase
transition
--
porous glass
--
nanocomposite
Аннотация:
Heat capacity, thermal dilatation, sensitivity to pressure and permittivity of NH4HSO4 embedded into glass matrices with a pore size of 320 nm and 46 nm were studied. Large difference in the thermal expansion of both glass and ferroelectric leads to a "clamped" state of NH4HSO4 in nanocomposites and to the
phase
transition temperatures change. The restricted geometry does not effect on the order of successive transformations in NH4HSO4 but is accompanied by a significant reduction in entropy of
phase
transitions
. The behavior of DTA-signal and permittivity show the expansion of the temperature range of the ferroelectric
phase
under hydrostatic pressure.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Gorev, M. V.; Горев, Михаил Васильевич; Bogdanov, E. V.; Богданов, Евгений Витальевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Korotkov, L. N.; Rysiakiewicz-Pasek, E.; Russian Foundation for Basic Research (RFBR) [16-32-00092 mol_a]; Russia/CIS/Baltic/Japan Symposium on Ferroelectricity(13 ; 2016 ; Jun. ; 19-23 ; Matsue, Japan)
}
Найти похожие
7.
Effect of cation
substitution in fluorine-oxygen molybdates (NH4)(2-x) A (x) MoO2F4 / E. V. Bogdanov [et al.]> // Phys. Solid State. - 2011. -
Vol. 53
,
Is. 2
. - P. 303-308,
DOI
10.1134/S1063783411020065. - Cited References: 11. - This study was supported by the Russian Foundation for Basic Research (project no. 09-02-00062) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (project no. NSh-1011.2008.2). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
CRYSTALS
(NH4)(2)WO2F4
DIFFRACTION
OXYFLUORIDE
MECHANISM
DISORDER
Аннотация:
Thermophysical and structural studies of (NH4)(2 - x) A (x) MoO2F4 (A = Cs, Rb, K) solid solutions of oxyfluorides have been performed. The character of the influence of cation substitutions on the stability of the initial
phase
(space group Cmcm) and on the mechanism of
phase
transitions
has been elucidated.
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
[Bogdanov, E. V.
Vasil'ev, A. D.
Flerov, I. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Vasil'ev, A. D.
Flerov, I. N.] Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia
[Laptash, N. M.] Russian Acad Sci, Inst Chem, Far Eastern Branch, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, ul. Kirenskogo 28, Krasnoyarsk 660074, Russian Federation
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation
Доп.точки доступа:
Bogdanov, E. V.; Богданов, Евгений Витальевич; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
}
Найти похожие
8.
Effect of deuteration
on the thermal properties and structural parameters of the (NH4)(2)WO2F4 oxyfluoride / I. N. Flerov [et al.]> // Phys. Solid State. - 2007. -
Vol. 49
,
Is. 6
. - P. 1149-1156,
DOI
10.1134/S1063783407060212. - Cited References: 11 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PEROVSKITE-LIKE OXYFLUORIDES
PHASE
-
TRANSITIONS
(NH4)(3)WO3F3
(NH4)(3)TIOF5
Аннотация:
The thermal properties and structure of (ND4)(2)WO2F4 crystals are investigated. It is established that deuteration does not lead to a change in the symmetry of the initial
phase
Cmcm but considerably decreases the extent of its disordering, which, in turn, brings about a substantial decrease in the
phase
transition entropy. Apart from the anomalies associated with
phase
transitions
characteristic of the protonic compound, the heat capacity exhibits two additional anomalies. Analysis of the
phase
diagram of the deuterated crystal reveals a triple point at a pressure p = 0.18 GPa, which is predicted for (NH4)(2)WO2F4 at about 0.7 GPa.
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
LV Kirenskii Inst Phys, Russian Acad Sci, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Fokina, V. D.; Фокина, Валентина Дмитриевна; Gorev, M. V.; Горев, Михаил Васильевич; Bogdanov, E. V.; Богданов, Евгений Витальевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bovina, A. F.; Бовина, Ася Федоровна; Kocharova, A. G.; Кочарова, Алла Георгиевна
}
Найти похожие
9.
Electrocaloric and barocaloric
effects in some ferroelectric hydrosulfates and triglycinesulfate / E. A. Mikhaleva [et al.]> //
Ferroelectrics. - 2012. -
Vol. 430
. - P. 78-83,
DOI
10.1080/00150193.2012.677717. - Cited References: 14. - This work was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (project no, Nsh - 4645.2010.2). . - ISSN 0015-0193
РУБ
Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
AMMONIUM
RbHSO4
Кл.слова (ненормированные):
Ferroelectrics
--
phase
transitions
--
electrocaloric and barocaloric effects
Аннотация:
A comparative analysis of electrocaloric and barocaloric efficiency of order-disorder ferroelectrics Rbx(NH4)1-xHSO4 and TGS is performed. A good agreement was found between intensive electrocaloric effects measured experimentally and calculated using electric equation of state. Barocaloric effects were evaluated analyzing the experimental data on heat capacity and T-p
phase
diagrams. In some crystals under study the same adiabatic temperature change can be produced by low pressure and rather high electric field.
Смотреть статью
,
Scopus
,
WoS
,
Читать в сети ИФ
Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Gorev, M. V.; Горев, Михаил Васильевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Davydova, T. N.; Давыдова, Тамара Николаевна; European Meeting on Ferroelectricity(12 ; 2011 ; 26 June - 1 July ; Bordeaux, France)
}
Найти похожие
10.
Exploration on anion
ordering, optical properties and electronic structure in K3WO3F3 elpasolite / V. V. Atuchin [et al.]> // J. Solid State Chem. - 2012. -
Vol. 187
. - P. 159-164,
DOI
10.1016/j.jssc.2011.12.037. - Cited References: 50. - This study is partly supported by SB RAS Project No. 34. ZSL acknowledges the funding support of No. 91022036, 11174297, 2010CB630701, and 2011CB922204 in China. Authors also wish to thank V. D. Fokina for microcaloric measurements. . - ISSN 0022-4596
Перевод заглавия:
Исследование анионного упорядочения, оптических свойств и электронной структуры в эльпасолите K3WO3F3
РУБ
Chemistry, Inorganic & Nuclear + Chemistry, Physical + Chemical modification + Electronic structure + Optical properties + Potassium + Structure (composition)
Рубрики:
PHASE
-
TRANSITIONS
CRYSTAL-GROWTH
FERROELECTRIC K3WO3F3
SOLID-STATE
OXYFLUORIDE
FLUORIDE
POLAR
CS
(NH4)(3)MOO3F3
APPROXIMATION
Anion ordering
Chemical routes
Elpasolite
First-priciples calculation
Forbidden band
Low temperatures
Non-linear optical coefficients
Nonlinear optical crystal
Optical transparency
Oxyfluorotungstate
Room temperature
Кл.слова (ненормированные):
Oxyfluorotungstate
--
Structure
--
Nonlinear optical crystals
--
Electronic and optical properties
--
First-principles calculations
Аннотация:
Room-temperature modification of potassium oxyfluorotungstate, G(2)-K3WO3F3, has been prepared by low-temperature chemical route and single crystal growth. Wide optical transparency range of 0.3-9.4 mu m and forbidden band gap E-g=4.32 eV have been obtained for G(2)-K3WO3F3 crystal. Meanwhile, its electronic structure has been calculated with the first-principles calculations. The good agreement between the theorectical and experimental results have been achieved. Furthermore, G(2)-K3WO3F3 is predicted to possess the relatively large nonlinear optical coefficients. (C) 2012 Elsevier Inc. All rights reserved.
Смотреть статью
,
WoS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
[Lin, Z. S.] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[Atuchin, V. V.] SB RAS, Lab Opt Mat & Struct, Inst Semicond Phys, Novosibirsk 630090, Russia
[Isaenko, L. I.
Yelisseyev, A. P.
Zhurkov, S. A.] SB RAS, Lab Crystal Growth, Inst Geol & Mineral, Novosibirsk 630090, Russia
[Kesler, V. G.] Russian Acad Sci, Inst Semicond Phys, Lab Phys Principles Integrated Microelect, Novosibirsk 630090, Russia
[Molokeev, M. S.] SB RAS, Lab Crystal Phys, Inst Phys, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Atuchin, V. V.; Isaenko, L. I.; Kesler, V. G.; Lin, Z. S.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Yelisseyev, A. P.; Zhurkov, S. A.
}
Найти похожие
11.
Flerov, I. N.
Calorimetric and optical studies of orthorhombic and cubic CsLiCrO4 crystals / I. N. Flerov, A. V. Kartashev, S. V. Mel'nikova> // Phys. Solid State. - 2006. -
Vol. 48
,
Is. 11
. - P. 2171-2176,
DOI
10.1134/S1063783406110242. - Cited References: 23 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
X-RAY
NH4LISO4
ALPHA
Аннотация:
Careful calorimetric and polarization optical studies of a metastable cubic modification of a CsLiCrO4 crystal (space group (F43m)) are performed. Anomalies of the heat capacity indicative of structural distortions at 92.4 and 69.1 K were revealed, and the values of the thermodynamic parameters of the
phase
transitions
were determined. The crystal twinning in the intermediate
phase
was studied. A comparative analysis of the
phase
transitions
occurring in a series of ALiMO(4) crystals (A=NH4, Cs; M=S, Cr, Mo, W) was performed. First studies of the monotropic structural transformation F43m - Pmcn and the enantiotropic
phase
transition Pmcn reversible arrow P112(1)/n were carried out using scanning calorimetry, and the thermodynamic parameters of these
transitions
were determined.
WOS
,
Scopus
,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Kartashev, A. V.; Карташев, Андрей Васильевич; Mel'nikova, S. V.; Мельникова, Светлана Владимировна; Флёров, Игорь Николаевич
}
Найти похожие
12.
Flerov, I. N.
Electrocaloric effect and anomalous conductivity of the ferroelectric NH4HSO4 / I. N. Flerov, E. A. Mikhaleva> // Phys. Solid State. - 2008. -
Vol. 50
,
Is. 3
. - P. 478-484,
DOI
10.1134/S1063783408030141. - Cited References: 10 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
Аннотация:
An intensive electrocaloric effect in the uniaxial ferroelectric NH4HSO4 near the second-order
phase
transition (T-1 approximate to 271 K) is studied. A high electrical conductivity of the NH4HSO4 crystal is revealed, and its temperature dependence is investigated. The results obtained are analyzed together with the data available for the ferroelectrics, which hold promise for the use as solid-state cooling agents.
WOS
,
Читать в сети ИФ
Держатели документа:
[Flerov, I. N.] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[Mikhaleva, E. A.] Siberian Fed Univ, Polytech Inst, Krasnoyarsk 660074, Russia
ИФ СО РАН
Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Флёров, Игорь Николаевич
}
Найти похожие
13.
Gavrichkov, V. A.
Cation spin and superexchange interaction in oxide materials below and above spin crossover under high pressure / V. A. Gavrichkov, S. I. Polukeev, S. G. Ovchinnikov> // Phys. Rev. B. - 2020. -
Vol. 101
,
Is. 9
. - Ст. 094409,
DOI
10.1103/PhysRevB.101.094409. - Cited References: 65. - We acknowledge the support of the Russian Science Foundation through Grant No. 18-12-00022 . - ISSN 2469-9950. - ISSN 2469-9969
РУБ
Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
EXCHANGE INTERACTION
PHASE
-
TRANSITIONS
STATE
ELECTRON
IRON
Аннотация:
We derived simple rules for the sign of 180° superexchange interaction based on the multielectron calculations of the superexchange interaction in the transition metal oxides that are valid both below and above spin crossover under high pressure. The superexchange interaction between two cations in dn configurations is given by a sum of partial contributions related to the electron-hole virtual excitations to the different states of the dn+1 and dn−1 configurations. Using these rules, we have analyzed the sign of the 180° superexchange interaction of a number of oxides with magnetic cations in electron configurations from d2 until d8: the iron, cobalt, chromium, nickel, copper, and manganese oxides with increasing pressure. The most interesting result concerns the magnetic state of cobalt and nickel oxides CoO, Ni2O3 and also La2CoO4, LaNiO3 isostructural to well-known high-TC and colossal magnetoresistance materials. These oxides have a spin 12 at the high pressure. Change of the interaction from antiferromagnetic below spin crossover to ferromagnetic above spin crossover is predicted for oxide materials with cations in d5(FeBO3) and d7(CoO) configurations, while for materials with the other dn configurations spin crossover under high pressure does not change the sign of the 180∘ superexchange interaction.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Kirensky Inst Phys, Akadeingorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Polukeev, S. I.; Полукеев, Семен Игоревич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Гавричков, Владимир Александрович; Russian Science FoundationRussian Science Foundation (RSF) [18-12-00022]
}
Найти похожие
14.
Gekht, R. S.
Helicoidal magnetic structure in frustrated antiferromagnetics / R. S. Gekht, A. M. Epikhin, V. I. Ponomarev> // Fiz. Tverd. Tela. - 1995. -
Vol. 37
,
Is. 6
. - P. 1891-1893. - Cited References: 6 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
Рубрики:
QUANTUM FLUCTUATIONS
PHASE
-
TRANSITIONS
WOS
Доп.точки доступа:
Epikhin, A. M.; Ponomarev, V. I.
}
Найти похожие
15.
GEKHT, R. S.
LOW-TEMPERATURE PROPERTIES OF QUASI-2-DIMENSIONAL FRUSTRATED ANTI-FERROMAGNETICS / R. S. GEKHT, V. I. PONOMAREV> // Fiz. Tverd. Tela. - 1994. -
Vol. 36
,
Is. 11
. - P. 3394-3397. - Cited References: 8 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
MAGNETIC STATES
ANTIFERROMAGNETS
WOS
Доп.точки доступа:
PONOMAREV, V. I.
}
Найти похожие
16.
GEKHT, R. S.
MAGNETIC-STRUCTURES AND PROPERTIES OF STATES IN STRONGLY FRUSTRATED HEISENBERG ANTIFERROMAGNETS / R. S. GEKHT> // Zhurnal Eksperimentalnoi Teor. Fiz. - 1992. -
Vol. 102
,
Is. 6
. - P. 1968-1982. - Cited References: 23 . - ISSN 0044-4510
РУБ
Physics, Multidisciplinary
Рубрики:
PHASE
-
TRANSITIONS
SPIN
LATTICE
MODELS
LONG
Аннотация:
The magnetic structures and properties of states in frustrated Heisenberg antiferromagnets are analyzed. It is shown that frustrations induced due to additional spins in the system lead to a large variety of
phase
with the commensurable and uncommensurable periods and also to arising nonperiodical phases. The energy spectrum of states is studied. It is found that in the large region of the frustration parameter variation the modulated
phase
(0, Q) is unstable. The
phase
diagram of states is found and the region of local degeneration for some structures is indicated.
WOS
}
Найти похожие
17.
GEKHT, R. S.
ON MAGNETIC STATES IN STRONGLY FRUSTRATED 2-DIMENSIONAL ANTIFERROMAGNETICS / R. S. GEKHT, V. V. GRISHIN> // Fiz. Tverd. Tela. - 1992. -
Vol. 34
,
Is. 11
. - P. 3557-3559. - Cited References: 5 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
LATTICE
WOS
Держатели документа:
LV KIRENSKII INST PHYS,KRASNOYARSK,RUSSIA
ИФ СО РАН
Доп.точки доступа:
GRISHIN, V. V.
}
Найти похожие
18.
Gerasimova, J. V.
Evans hole in internal modes IR spectrum of WO3F33-ions in (NH4)(3)WO3F3 crystal / J. V. Gerasimova, A. N. Vtyurin> // Chem. Phys. Lett. - 2012. -
Vol. 523
. - P. 144-147,
DOI
10.1016/j.cplett.2011.12.041. - Cited References: 11. - We would like to thank Prof. E. M. Aver'yanov for discussion, and V. A. Ouskin for the technical assistance. This work has been supported by the Russian Foundation for Basic Researches, Grant No. 11-02-98002-r_sibir_a. . - ISSN 0009-2614
РУБ
Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
INFRARED-SPECTRA
PHASE
-
TRANSITIONS
OXYFLUORIDE
MOLECULES
Аннотация:
Infrared absorption of (NH4)(3)WO3F3 compound has been studied. Profile of asymmetric band in 600-1000 cm (1) range associated with polar W-O vibrations of WO3F33- ions is explicable on the basis of multi-oscillatory dynamics with account of damping. Complex profile with Evans holes proves that internal modes of WO3F33- anions in the fluorine-oxygen octahedron interact due to the effects of the local field. (C) 2011 Elsevier B. V. All rights reserved.
Смотреть статью
,
Scopus
,
WoS
,
Читать в сети ИФ
Держатели документа:
[Gerasimova, Ju V.
Vtyurin, A. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Герасимова, Юлия Валентиновна
}
Найти похожие
19.
Klimin, S. A.
Spin-phonon and electron-phonon interactions in multiferroic GdFe3(BO3)4 and TbFe3(BO3)4 evidenced by IR reflection spectroscopy / S. A. Klimin, M. A. Kashchenko, L. N. Bezmaternykh> // J. Low Temp. Phys. - 2016. -
Vol. 185
,
Is. 5-6
. - P. 538-543,
DOI
10.1007/s10909-016-1597-6. - Cited References:19. - The authors thank Alexey Kuzmenko and Marina Popova for fruitful discussions. This paper was supported by the Russian Science Foundation under Grant No. 14-12-01033, by the Swiss National Science Foundation (SNSF), and by the Science and Technology cooperation program "Switzerland-Russia" of the University of Geneva. . - ISSN 0022-2291. - ISSN 1573-7357
РУБ
Physics, Applied + Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
GdFe3(BO3)4
CRYSTALS
SPECTRUM
Кл.слова (ненормированные):
Multiferroics
--
IR-active phonons
--
Spin-phonon interaction
--
Coupled
--
electron-phonon mode
Аннотация:
We study temperature-dependent polarized reflection spectra of multiferroic GdFe3(BO3)4 and TbFe3(BO3)4 single crystals. Signatures of spin–lattice interactions in both compounds and of a formation of the electron–phonon coupled mode in TbFe3(BO3)4 are discussed.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Inst Spect RAS, Moscow 108840, Russia.
Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia.
RAS, Siberian Branch, Kirenskiy Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Kashchenko, M. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Russian Science Foundation [14-12-01033]; Swiss National Science Foundation (SNSF); Science and Technology cooperation program "Switzerland-Russia" of the University of Geneva
}
Найти похожие
20.
Lattice dynamics of
oxyfluoride Rb2KMoO3F3 / A. S. Krylov [et al.]> //
Ferroelectrics. - 2012. -
Vol. 441
. - P. 52-60,
DOI
10.1080/00150193.2012.743791. - Cited References: 23 . - ISSN 0015-0193
РУБ
Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
PHASE
-
TRANSITIONS
RAMAN-SCATTERING
ELPASOLITE
CRYSTALS
DISORDER
SPECTRA
CS
Кл.слова (ненормированные):
Oxyfluorides
--
lattice dynamics
--
Ramam measurements
Аннотация:
The complete Raman spectra of oxyfluoride Rb2KMoO 3F3 were obtained. At T ≈ 185 K
phase
transitions
were found. Lattice dynamics of disordered structures of the investigated compound was simulated, and "soft" vibrational modes were found in the calculated spectrum. Copyright © Taylor & Francis Group, LLC.
Смотреть статью
,
Scopus
,
WoS
,
Читать в сети ИФ
Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Sofronova, S. N.; Софронова, Светлана Николаевна; Kolesnikova, E. M.; Колесникова, Евгения Михайловна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Isaenko, L. I.; International Symposium on Ferroic Domains and Micro- to Nanoscopic Structures(11th ; 20-24 Aug. 2012 ; Ekaterinburg, Russia); Russia/CIS/Baltic/Japan Symposium on Ferroelectricity(11 ; 2012 ; Aug. ; 20-24 ; Ekaterinburg)
}
Найти похожие
полный формат
краткий формат
все найденные
отмеченные
кроме отмеченных
Стандартный
Расширенный
Профессиональный
Распределенный
По словарю
ГРНТИ-навигатор
УДК-навигатор
Тематический навигатор
Другие библиотеки
Центральная Научная Библиотека КНЦ СО РАН
Библиотека института биофизики
Библиотека института химии и химический технологии
Библиотека института вычислительного моделирования
Библиотека института леса
Библиотека СФУ
Краевая научная библиотека
© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)