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Analysis of the exchange magnetic structure in Pb3Mn7O15 / E. V. Eremin [et al.] // J. Exp. Theor. Phys. - 2017. - Vol. 124, Is. 5. - P. 792-804, DOI 10.1134/S1063776117040112. - Cited References: 16 . - ISSN 1063-7761
Кл.слова (ненормированные):
Crystallography -- Magnetic properties -- Magnetic structure -- Magnetism -- Manganese -- Indirect couplings -- Manganese ions -- Structural and magnetic properties -- Single crystals
Аннотация: The indirect-coupling model is used to analyze the exchange magnetic structure of Pb3Mn7O15 in the hexagonal setting. The ratios of manganese ions Mn4+/Mn3+ in each nonequivalent position are determined. Pb3(Mn0.95Ge0.05)7O15 and Pb3(Mn0.95Ga0.05)7O15 single crystals are grown by the solution–melt method in order to test the validity of the proposed model. The structural and magnetic properties of the single crystals are studied. The magnetic properties of the grown single crystals are compared with those of nominally pure Pb3Mn7O15. © 2017, Pleiades Publishing, Inc.

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Публикация на русском языке Анализ обменной магнитной структуры Pb3Mn7O15 [Текст] / Е. В. Еремин [и др.] // Журн. эксперим. и теор. физ. : Наука, 2017. - Т. 151 Вып. 5. - С. 930-943

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, Russian Federation
Novosibirsk State University, ul. Pirogova 2, Novosibirsk, Russian Federation

Доп.точки доступа:
Eremin, E. V.; Еремин, Евгений Владимирович; Volkov, N. V.; Волков, Никита Валентинович; Sablina, K. A.; Саблина, Клара Александровна; Bayukov, O. A.; Баюков, Олег Артемьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Komarov, V. Y.
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Antiferromagnetic Resonance and Dielectric Properties of Rare-earth Ferroborates in the Submillimeter Frequency Range / A. M. Kuz'menko [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 1. - P. 113-120, DOI 10.1134/S106377611105013X. - Cited References: 27. - This work was supported by the Russian Foundation for Basic Research, project no. 10-02-00846. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
SPECTROSCOPY
CRYSTAL
Кл.слова (ненормированные):
Antiferromagnetic resonance -- Basic parameters -- Effective anisotropy constant -- Ferroborates -- Ferroics -- Ferromagnetic orderings -- Frequency ranges -- Magnetic interactions -- Magnetoresonance -- Millimeter frequency range -- Rare earth ions -- Submillimeters -- Antiferromagnetic materials -- Crystallography -- Erbium -- Europium -- Ferromagnetic resonance -- Ion exchange -- Magnetic anisotropy -- Magnetic devices -- Magnetic structure -- Permittivity -- Resonance -- Antiferromagnetism
Аннотация: The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth ferroborates RFe(3)(BO(3))(4) (R = Y, Eu, Pr, Tb, Tb(0.25)Er(0.75)), are studied in the submillimeter frequency range (nu = 3-20 cm(-1)). Ferroborates with R = Y, Tb, and Eu exhibit permittivity jumps at temperatures of 375, 198, and 58 K, respectively, which are caused by the R32 -> P3(1)2(1) phase transition. Antiferromagnetic resonance (AFMR) modes in the subsystem of Fe(3+) ions are detected in the range of antiferromagnetic ordering (T < T(N) = 30-40 K) in all ferroborates that have either an easy-plane (Y, Eu) or easy-axis (Pr, Tb, Tb(0.25)Er(0.75)) magnetic structure. The AFMR frequencies are found to depend strongly on the magnetic anisotropy of a rare-earth ion and its exchange interaction with the Fe subsystem, which determine the type of magnetic structure and the sign and magnitude of an effective anisotropy constant. The basic parameters of the magnetic interactions in these ferroborates are found, and the magnetoelectric contribution to AFMR is analyzed.

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Держатели документа:
[Kuz'menko, A. M.
Mukhin, A. A.
Ivanov, V. Yu.
Lebedev, S. P.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Kadomtseva, A. M.] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
Moscow State University, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Y.; Kadomtseva, A. M.; Lebedev, S. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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Aleksandrov, K. S.
Architecture of perovskite-like crystals / K. S. Aleksandrov, B. V. Beznosikov // Crystallogr. Rep. - 1997. - Vol. 42, Is. 4. - P. 556-566 . - ISSN 1063-7745
Аннотация: The structures of the well-known perovskite-like crystals, including stoichiometric and both cation- and anion-dencient compounds, are considered as intergrowth systems of stacks consisting either of n layers (n = 1 - ?) connected via the vertices of the BX6 octahedra or of combinations of layers of octahedra, BX5 pyramids, and planar networks of BX4 squares with intermediate block layers of various types. The classification of stacks and block layers in these structures is suggested. Based on this classification, the known structure types are considered and new structure types, including various possible superconductor structures, are predicted.

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Публикация на русском языке Александров, Кирилл Сергеевич. Архитектура перовскитоподобных кристаллов [Текст] / К. С. Александров, Б. В. Безносиков // Кристаллография. - 1997. - Т. 42 Вып. 4. - С. 613-623

Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
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    Arrangement of Rh3+ ions in fac-triamminetrichloridorhodium from powder data and in fac-triamminetrinitratorhodium crystals twinned by merohedry / A. D. Vasiliev [et al.] // Acta Crystallogr. C. - 2013. - Vol. 69, Pt. 12. - P. 1462–1466 ; Spec. is. Interplay of crystallogr., spectrosc. and theor. meth. for solving chem. prob., DOI 10.1107/S010827011303076X . - ISSN 0108-2701
   Перевод заглавия: Расположение ионов Rh3+ в гран-триамминтрихлоридродии из порошковых данных и в мероэдрически двойникованном кристалле гран-триамминтринитрародия
Кл.слова (ненормированные):
crystal structure -- powder diffraction -- merohedral twinning -- fac-triamminetrichloridorhodium -- low solubility -- fac-triamminetrinitratorhodium
Аннотация: The rhodium complexes [RhCl3(NH3)3], (I), and [Rh(NO3)3(NH3)3], (II), are built from octahedral RhX3(NH3)3 units; in (I) they are isolated units, while in (II) the units are stacked in columns with partially filled sites for the Rh atoms. The octahedra of monoclinic crystals of (I) are linked by N-H...Cl hydrogen bonds and the Rh3+ ions are located on the mirror planes. In the trigonal crystals of (II), the discontinuous `columns` along the threefold axis are linked by N-H...O hydrogen bonds. The structure of (I) has been solved using laboratory powder diffraction data, the structure of (II) has been solved by single-crystal methods using data from a merohedrally twinned sample. Both compounds possess low solubility in water.

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Держатели документа:
Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Nikolaev Inst Inorgan Chem SB RAS, Novosibirsk 630090, Russia

Доп.точки доступа:
Vasiliev, A. D.; Васильев, Александр Дмитриевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Baidina, I. A.; Belyaev, A. V.; Vorob`eva, S. N.

}
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Aleksandrov, K. S.
Atomic mechanisms of structural phase transitions / K. S. Aleksandrov // Acta crystallographica Section A: Foundations and Advances. - 1987. - Vol. 43: Supplement. - P. 5-6

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Доп.точки доступа:
Александров, Кирилл Сергеевич; International Congress of the International Union of Crystallography(14 ; 1987 ; Aug. 12-20 ; Perth, Australia)
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    Bipolar-homogeneous structural phase transition in nematic droplets formed in the polymer matrix in a magnetic field / A. M. Parshin [et al.] // Crystallogr. Rep. - 2009. - Vol. 54, Is. 7. - P1191-1196, DOI 10.1134/S1063774509070098. - Cited Reference Count: 19. - Гранты: This study was supported by the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools ( grant no. NSh-3818.2008.3), the Russian Foundation for Basic Research ( project no. 08-03-01007), the Presidium of the Russian Academy of Sciences ( project no. 27.1), and the Siberian Branch of the Russian Academy of Sciences ( project nos. 110 and 144). - Финансирующая организация: President of the Russian Federation [NSh-3818.2008.3]; Russian Foundation for Basic Research [08-03-01007]; Russian Academy of Sciences [27.1, 110, 144] . - DEC. - ISSN 1063-7745
Рубрики:
DISPERSED LIQUID-CRYSTALS
   FRANK CONSTANTS
   ALIGNMENT
Кл.слова (ненормированные):
Bipolar configuration -- Bipolar structure -- Cyanobiphenyls -- Homogeneous structure -- Mutual transformations -- Nematic director -- Nematic droplets -- Order parameter -- Poly(vinyl butyral) -- Structural phase transition -- Temperature range -- Thermal fluctuations -- Crystal structure -- Drop formation -- Liquid crystals -- Magnetic fields -- Nematic liquid crystals -- Phase transitions
Аннотация: The phase transition from the bipolar structure to the homogeneous structure in droplets formed from the nematic liquid crystal 4-n-pentyl-4'-cyanobiphenyl in poly(vinyl butyral) in the presence of a magnetic field has been investigated. The phase transition is associated with the expansion of the regions with a tilted orientation of the director in the vicinity of defects (the disappearance of boojums) and with the alignment of the nematic director lines in the bulk of the droplet in the direction of the magnetic field. In the temperature range T = 24-34A degrees C, cyclic mutual transformations between the bipolar configuration of the nematic director and the homogeneous structure, which have a period of similar to 0.5-3.5 s and result from thermal fluctuations of the order parameter, are observed in droplets 3-15 A mu m in size after the forming field is switched off.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Parshin, A. M.; Паршин, Александр Михайлович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Nazarov, V. G.
}
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Krylova, S. N.
Calculation of the phonon spectrum of PbMnBO4 crystal using density functional theory / S. N. Krylova // Crystallogr. Rep. - 2023. - Vol. 68, Is. 5. - P. 788-796, DOI 10.1134/S1063774523600436. - Cited References: 31. - This study was supported by the Russian Foundation for Basic Research, project no. 21-52-12018 NNIO_а . - ISSN 1063-7745. - ISSN 1562-689X
Аннотация: The phonon dispersion and Raman spectrum of the PbMnBO4 ferromagnetic crystal have been calculated within the density functional theory. Imaginary phonon branches have been observed at the points Y, Z, and Г and along the X–S direction of the Brillouin zone, which indicates structural instability and a possible phase transition with variation in external factors (temperature and pressure). The shapes of vibrations and symmetry types of the normal modes of the crystal at the center of the Brillouin zone have been determined. The calculation results are compared with the experimental and theoretical spectra from other studies. It is shown that the vibrational mode of highest intensity at 692.5 cm–1 in the spectrum and the mode at 272.3 cm–1, corresponding to the experimental modes at 690.5 and 224.7 cm–1, are bending vibrations of oxygen atoms in distorted MnO6 octahedra.

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Публикация на русском языке Крылова, Светлана Николаевна. Расчет фононного спектра кристалла PbMnBo4 в рамках теории функционала плотности [Текст] / С. Н. Крылова. - 10 с. // Кристаллография. - 2023. - Т. 68 № 5. - С. 799-808

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Крылова, Светлана Николаевна
}
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Complex magnetic order in the Nd(Tb)Fe3(BO3)4 multiferroic revealed by single-crystal neutron diffraction / I. V. Golosovsky [et al.] // Phys. Rev. B. - 2019. - Vol. 99, Is. 13. - Ст. 134439, DOI 10.1103/PhysRevB.99.134439. - Cited References: 33. - This work was supported by the Russian Grant No. RFBR 16-02-00058. A.A.M. acknowledges the financial support from the Russian Science Foundation (16-12-10531). . - ISSN 2469-9950
Кл.слова (ненормированные):
Antiferromagnetism -- Binary alloys -- Crystal structure -- Crystallography -- Magnetic structure -- Neodymium compounds -- Neutron diffraction -- Single crystals -- Terbium compounds
Аннотация: Magnetic structure of the substituted multiferroics-ferroborates Nd0.9Tb0.1Fe3(BO3)4 and Nd0.8Tb0.2Fe3(BO3)4 were determined in the framework of a self-consistent refinement of the single crystal neutron diffraction data. The small substitution of Nd for Tb leads to the reorientation of the main antiferromagnetic vector L from the basal plane towards the hexagonal axis. The reorientation takes place via an angular structure for which L does not coincide with the principal crystallographic directions and evolves with temperature due to competing magnetic anisotropies of Fe, Nd, and Tb subsystems. Our refinement at 2 K reveals the existence of distortions in the collinear antiferromagnetic Fe spin arrangement suggested before in other ferroborates. Therefore, besides the main antiferromagnetic vector L, the magnetic structure involves additional fine symmetrized combinations of spin components allowed by symmetry. They coexist with certain L components and could originate from the antisymmetric Dzyaloshinsky-Moriya Fe-Fe exchange interactions. At higher temperatures, the magnetic structure is described by the simple collinear model, where the L vector is deviated from the hexagonal plane. © 2019 American Physical Society.

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Держатели документа:
National Research Center, Kurchatov Institute, B.P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, 188300, Russian Federation
Prokhorov General Physics Institute, RAS, Moscow, 119991, Russian Federation
Universite Grenoble Alpes, CEA, INAC-MEM, Grenoble, 38000, France
Institucio Catalana de Recerca i Estudis Avancats, Barcelona, E-08010, Spain
Fisika Aplikatua II, Zientzia Eta Teknologia Fakultatea, Universidad Del Pais Vasco, UPV/EHU, Bilbao, 48940, Spain
Kirenskii Institute of Physics, Siberian Division of RAS, Krasnoyarsk, 660038, Russian Federation

Доп.точки доступа:
Golosovsky, I. V.; Vasilev, A. I.; Mukhin, A. A.; Ressouche, E.; Skumryev, V.; Urcelay-Olabarria, I.; Gudim, I. A.; Гудим, Ирина Анатольевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
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    Astakhov, A. M.
    Crystal and molecular structure of a co-crystal of 5-nitrimino-1,4H-1,2,4-triazole with dimethyl sulfoxide / A. M. Astakhov, A. D. Vasiliev // Crystallogr. Rep. - 2022. - Vol. 67, Is. 7. - P. 1146-1151, DOI 10.1134/S1063774522070409. - Cited References: 16 . - ISSN 1063-7745. - ISSN 1562-689X
   Перевод заглавия: Кристаллическая и молекулярная структура ко-кристалла 5-нитримино-1,4H-1,2,4-триазола с диметил сульфоксидом
Аннотация: The structure of the labile co-crystal of 5-nitrimino-1,4Н-1,2,4-triazole with dimethyl sulfoxide was determined by X-ray diffraction. It was established that the molecule, previously known as 3(5)-nitra-mino-1,2,4-triazole, has a nitrimine structure. The geometric parameters of the molecules are similar to those of other nitrimino-1,2,4-triazoles. Intermolecular interactions in the co-crystal are considered. An explanation is provided for the lability of the co-crystal.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660049 Russia
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036 Russia
Siberian Federal University, Krasnoyarsk, 660041 Russia

Доп.точки доступа:
Vasiliev, A. D.; Васильев, Александр Дмитриевич
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10.

    Aleksandrov, K. S.
    Crystal chemistry and prediction of compounds with a structure of skutterudite type / K. S. Aleksandrov, B. V. Beznosikov // Crystallogr. Rep. - 2007. - Vol. 52, Is. 1. - P. 28-36, DOI 10.1134/S106377450701004X. - Cited References: 47 . - ISSN 1063-7745
Рубрики:
SUPERCONDUCTOR PROS4SB12
   MAGNETIC-PROPERTIES
   HIGH-PRESSURE
   RARE-EARTH
   TRANSITION
   LAFE4P12
Аннотация: Crystallochemical analysis of skutterudite-type structures in the BX3, AB(4)X(12), and A B-3' B4O12 compositions (A and B are metals; X = P, As, Sb) has been performed. Probable regions of structure formation are determined, thereby indicating that more than 270 new compounds of the AB4X12 composition can be synthesized.(1)

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Публикация на русском языке Александров, Кирилл Сергеевич. Кристаллохимия и прогноз соединений со структурой типа скуттерудита [Текст] / К. С. Александров, Б. В. Безносиков // Кристаллография. - 2007. - Т. 52 Вып. 1. - С. 32-40

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
}
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11.

Beznosikov, B. V.
Crystal chemistry and structure of expected compounds A2BX4. II. Oxides, selenides, and sulfides 061A2B6+X4 2- and 080A2 2+B4+X4 2-. / B. V. Beznosikov, K. S. Aleksandrov // Sov. Phys.: Crystallogr. - 1985. - Vol. 30, Is. 5. - P. 533-535 ; Crystallography Reports ; Kristallografiya
Аннотация: Predictions of A2BX4 compounds for compositions 071A2 +B6+X4 2- with type structures of K2MgF4, beta -K2SO4, spinel, olivine, thenardite, phenacite, Sr2PbO4, and Pb3O4 are presented. K2MgF4 type structures are known and probable only in oxides and sulphides with hexavalent uranium because their formation is limited by the size of the hexavalent B cation. Structures of the beta -K2SO4 type are stable in compounds with large A cations. Among the sulphides with 076A2 +B6+X4 2-, the spinel crystal structure is as yet unknown, but is most probable in compounds with A+ = Li, Na, Ag, and with B6+ = Mo, W, and U. The olivine type structure is known only in Ag2CrO4, and no new compounds with this structure are expected to be found. A phenacite structure is probable only in three new oxides and in some sulphides with Li as A+. A thenardite type structure is probable in oxides with B6+ = Fe and Mn, but sulphides are unlikely. For 076A2 2+B4+X4 2- compounds with large A2+ ions and B4+ ions with radii from 0.57 A to RB 0.48RA + 0.11, a K2MgF4 structure would exist. For even larger A ions, the Sr2PbO4 structure would exist. In oxides with cations A2+ = Pb and Sn, compounds with Pb3O4 type structures are probable.-D.F.P.

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Публикация на русском языке Безносиков, Борис Валерьевич. Кристаллохимия и структуры ожидаемых соединений A2BX4. II. Оксиды, сульфиды, селениды составов A2[+]B[6+]X4[2-],A2[2+]D[4+]X4[2-1] [Текст] / Б. В. Безносиков, К. С. Александров // Кристаллография. - 1985. - Т. 30 Вып. 5. - С. 919-922

Держатели документа:
Siberian Branch of the Academy of Sciences, USSR.

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич

}
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12.

Beznosikov, B. V.
Crystal chemistry and structure of expected compounds A2BX4. III. Oxides, sulfides, and selenides 076A2 3+B2+X4 2-. / B. V. Beznosikov, K. S. Aleksandrov // Sov. Phys.: Crystallogr. - 1985. - Vol. 30, Is. 5. - P. 535-536 ; Crystallography Reports ; Kristallografiya
Аннотация: Predictions are made for A2BX4 compounds with the composition 076A3+B2+X4 2- having the structural types of K2MgF4, spinel, olivine, phenacite, Th3P4 and Fe2CaO4. Of the >2000 new compounds possible for A2BX4, about 40% will have spinel-type structures, 14% will be of the phenacite type, 13% of the olivine type, 10% of the Fe2CaO4 type, 9% of the beta -K2SO4 type, and 8% of the K2MgF4 type.-D.F.P.

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Публикация на русском языке Безносиков, Борис Валерьевич. Кристаллохимия и структуры ожидаемых соединений A2BX4. III. Оксиды, сульфиды, селениды составов A2[3+]B[2+]X4[2-1] [Текст] / Б. В. Безносиков, К. С. Александров // Кристаллография. - 1985. - Т. 30 Вып. 5. - С. 923-926

Держатели документа:
Inst. of Physics, Siberian Branch of Academy of Sciences, USSR.

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич

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13.

Crystal structure of bismuth-containing NdFe3(BO3)4 in the temperature range 20–500 K / E. S. Smirnova, O. A. Alekseeva, A. P. Dudka [et al.] // Acta Crystallogr. B. - 2022. - Vol. 78, Pt. 1. - P. 1-13, DOI 10.1107/S205252062101180X. - Cited References: 44. - This work was performed using the equipment of the Shared Research Center FSRC `Crystallography and Photonics' RAS supported by the Russian Ministry of Science and Higher Education. This work was supported by the Ministry of Science and Higher Education within the State assignment FSRC `Crystallography and Photonics' RAS . - ISSN 2052-5206

РУБ Chemistry, Multidisciplinary + Crystallography
Рубрики:
MAGNETIC PHASE-TRANSITIONS
UNIT-CELL PARAMETERS
DIFFRACTION
Кл.слова (ненормированные):
neodymium iron borate -- multiferroic -- crystal structure -- multi-temperature -- single-crystal X-ray diffraction -- Mossbauer spectroscopy -- characteristic temperature
Аннотация: Neodymium iron borate NdFe3(BO3)4 is an intensively studied multiferroic with high electric polarization values controlled by a magnetic field. It is characterized by a large quadratic magnetoelectric effect, rigidity in the base plane and a rather strong piezoelectric effect. In this work, the atomic structure of (Nd0.91Bi0.09)Fe3(BO3)4 was studied by single-crystal X-ray diffraction in the temperature range 20–500 K (space group R32, Z = 3). The Bi atoms found in the composition partially substitute the Nd atoms in the 3a position; they entered the structure due to the growth conditions in the presence of Bi2Mo3O12. It was shown that in the temperature range 20–500 K there is no structural phase transition R32→P3121, which occurs in rare-earth iron borates (RE = Eu–Er, Y) with an effective rare-earth cation radius smaller than that of Nd. The temperature dependence of the unit-cell c parameter reveals a slight increase on cooling below 90 K, which is similar to the results obtained previously for iron borates of Gd, Y and Ho. The atomic distances (Nd,Bi)—O, (Nd,Bi)—B, (Nd,Bi)—Fe, Fe—O, Fe—B and Fe—Fe in the iron chains and between chains decrease steadily with decreasing temperature from 500 to 90 K, whereas the B1(3b)—O distance does not change and the average B2(9e)—O distance increases slightly. There is a uniform decrease in the atomic displacement parameters with decreasing temperature, with a more pronounced decrease for the Nd(3a) and O2(9e) atoms. The O2(9e) atoms are characterized by the maximum atomic displacement parameters and the most elongated atomic displacement ellipsoids. The characteristic Debye and Einstein temperatures, and the static component in the atomic displacements were determined for cations using multi-temperature diffraction data. It was shown that the Nd cations have the weakest bonds with the surrounding atoms and the B cations have the strongest.

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Держатели документа:
Russian Acad Sci, Fed Sci Res Ctr Crystallog & Photon, Shubnikov Inst Crystallog, Moscow 119333, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Smirnova, E. S.; Alekseeva, O. A.; Dudka, A. P.; Verin, I. A.; Artemov, V. V.; Lyubutina, M. V.; Gudim, I. A.; Гудим, Ирина Анатольевна; Frolov, K. V.; Lyubutin, I. S.; Russian Ministry of Science and Higher Education; Ministry of Science and Higher Education within the State assignment FSRC 'Crystallography and Photonics' RAS
}
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14.

Beznosikov, B. V.
Crystal-chemistry and expected structures of A2BX4 compounds. I. Halogenides / B. V. Beznosikov, K. S. Aleksandrov // Sov. Phys.: Crystallogr. - 1985. - Vol. 30, Is. 3. - P. 509-512 ; Crystallography Reports ; Kristallografiya. - Cited References: 12

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Публикация на русском языке Безносиков, Борис Валерьевич. Кристаллохимия и структуры ожидаемых соединений A2BX4. I. Галогениды [Текст] / Б. В. Безносиков, К. С. Александров // Кристаллография. - 1985. - Т. 30 Вып. 3. - С. 509-512

15.

Crystallization of trigonal (Tb,Er)(Fe,Ga)(3)(BO3)(4) phases with hantite structure in bismuth trimolybdate-based fluxes / L. N. Bezmaternykh [et al.] // Crystallogr. Rep. - 2005. - Vol. 50. - P. S97-S99, DOI 10.1134/1.2133981. - Cited Reference Count: 8 . - ISSN 1063-7745
Рубрики:

Аннотация: The stability regions of the trigonal (Tb,Er)(Fe,Ga)(3)(BO3)(4) phases are established in (Bi2Mo3O12)-based fluxes. The specific features of heterogeneous nucleation and the subsequent phase transformations during transition to the equilibrium are studied in the vicinity of the boundaries. The temperature modes of single crystal growth on seeds are suggested with due regard for the "nonequilibrium effect." (C) 2005 Pleiades Publishing, Inc.

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Доп.точки доступа:
Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна; Stolbovaya, N.A.
}
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16.

Crystals Gd3Ga5O12:Nd3+ for a continuous-wave diode-pumped laser operating in 4F3/24I11/2 and 4F3/24I13/2 channels / A. A. Kaminskij [и др.] // Kristallogr. - 2002. - Vol. 47, Is. 2. - P. 344-349 ; Crystallogr. Rep. . - ISSN 0023-4761

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Другая переводная версия

Публикация на русском языке Раствор-расплавные кристаллы Gd3Ga5O12:Nd3+ для непрерывных лазеров (4F3/2→4I11/2 и 4F3/2→4I13/2 каналы) с диодно-лазерной накачкой [Текст] / А. А. Каминский [и др.] // Кристаллография. - 2002. - Т. 47 Вып. 2. - С. 344-348

Доп.точки доступа:
Kaminskij, A. A.; Butashin, A. V.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна; Kravtsov, N. V.; Firsov, V. V.; Seo, D. T.; Hommerich, U.; Temple, D.; Braud, A.

}
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17.

Epitaxic growth of metal films by termal evaporation on ionic crystals cleaved in vacuum and in air / L. V. Kirenskij [et al.] // Acta Crystallogr. - 1966. - Vol. 21, Pt. 7 Suppl. - P. A276
Аннотация: см. РЖ Phys. Abstr., 1968, 30738

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Доп.точки доступа:
Kirenskij, L. V.; Киренский, Леонид Васильевич; Pyn'ko, V. G.; Пынько, Виталий Григорьевич; Pyn'ko, G. P.; Пынько, Галина Петровна; Sivkov, N. I.; Сивков, Николай Иванович; Komalov, A. S.; Комалов, Александр Семенович; International Congress of the International Union of Crystallography(7 ; 1966 ; July 12-21 ; Moscow); International Symposium on Crystal Growth(7 ; 1966 ; July 20-21 ; Moscow); International Union of Crystallography
}
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18.

    Ferroelastic phase transitions in fluorides with cryolite and elpasolite structures / I. N. Flerov [et al.] // Crystallogr. Rep. - 2004. - Vol. 49, Is. 1. - P. 100-107, DOI 10.1134/1.1643969. - Cited References: 43 . - ISSN 1063-7745
Рубрики:
NUCLEAR MAGNETIC-RESONANCE
   THERMODYNAMIC PROPERTIES
   RB2KMIIIF6 ELPASOLITES
   NEUTRON-DIFFRACTION
   CRYSTALS
   PEROVSKITES
   DIAGRAM
   SC
   RB2KGAXSC1-XF6
   SCATTERING
Аннотация: The ferroelastic phase transitions are investigated in several series of fluoride crystals belonging to the elpasolite and cryolite families (space group Fm (3) over barm) with the general formula A(2)BB'F-6. The influence of the size and shape of cations and anions on the entropy and the mechanism of structural distortions is discussed. (C) 2004 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Сегнетоэластические фазовые переходы во фторидах со структурой криолита и эльпасолита [Текст] / И. Н. Флеров [и др.] // Кристаллография. - 2004. - Т. 49 Вып. 1. - С. 107-114

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France
ИФ СО РАН

Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Tressaud, A.; Fokina, V. D.; Фокина, Валентина Дмитриевна
}
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19.

Rudenko, V. V.
GaBO3 crystal growth from flux / V. V. Rudenko // Crystallogr. Rep. - 1995. - Vol. 40, No 2. - P. 347-348

Публикация на русском языке Руденко, Валерий Васильевич. Выращивание кристаллов GaBO3 из раствора-расплава [Текст] / В. В. Руденко // Кристаллография. - 1995. - Т. 40 Вып. 2. - С. 382-384

Доп.точки доступа:
Руденко, Валерий Васильевич
}
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20.

    Gd3Ga5O12:Nd3+ crystals for a continuous-wave diode-pumped laser operating in 4F3/2 4I11/2 and 4F3/2 4I13/2 channels / A. A. Kaminskii [et al.] // Crystallogr. Rep. - 2002. - Vol. 47, Is. 2. - P. 308-312, DOI 10.1134/1.1466508. - Cited References: 15 . - ISSN 1063-7745
Рубрики:
GALLIUM GARNET
   EMISSION
Кл.слова (ненормированные):
gadolinium -- gallium -- neodymium -- article -- concentration response -- crystal -- pump -- spectroscopy -- X ray -- x ray topography
Аннотация: Garnet crystals of the composition Gd3Ga5O12:Nd3+ (concentration series CNd = 1-10 at. %) were grown from flux. In terms of spectroscopy, these crystals, unlike those grown from melts, form a medium with a single activator center. For the first time, continuous-wave lasing was excited by diode pumping with the use of Gd3Ga5O12:Nd3+ crystals at the wavelengths ?3 = 1.3315 and ?4 = 1.3370 ?m of the 4F3/2 > 4I13/2 channel and also the simultaneous generation at two wavelengths, ?1 = 1.0621 and ?2 = 1.0600 ?m, of the 4F3/2 > 4I11/2 channel. В© 2002 MAIK "Nauka/Interperiodica".

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Другая переводная версия Crystals Gd3Ga5O12:Nd3+ for a continuous-wave diode-pumped laser operating in 4F3/24I11/2 and 4F3/24I13/2 channels [Текст] / A. A. Kaminskij [и др.] // Kristallogr. - 2002. - Vol. 47 Is. 2.- P.344-349 ; Crystallogr. Rep.

Держатели документа:
Shubnikov Inst. of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow 117333, Russian Federation

Доп.точки доступа:
Kaminskii, A. A.; Butashin, A. V.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Kravtsov, N. V.; Firsov, V. V.; Seo, D. T.; Hommerich, U.; Temple, D.; Braud, A.
}
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