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Kikoin, K. A.
A novel explanation of the phase-transition with the valence change in cation-substituted samarium monochalcogenides / K. A. Kikoin, E. G. Goryachev, V. A. Gavrichkov // Solid State Commun. - 1986. - Vol. 60, Is. 8. - P. 663-667, DOI 10.1016/0038-1098(86)90264-4. - Cited References: 21 . - ISSN 0038-1098

РУБ Physics, Condensed Matter

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Держатели документа:
LV KIRENSKII PHYS INST,KRASNOYARSK 660036,USSR
ИФ СО РАН
Доп.точки доступа:
Goryachev, E. G.; Горячев, Евгений Геннадьевич; Gavrichkov, V. A.; Гавричков, Владимир Александрович
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Bayukov, O. A.
The prognostication possibility of some magnetic-properties for dielectrics on the basis of covalency parameters of ligand cation bonds / O. A. Bayukov, A. F. Savitskii // Phys. Status Solidi B. - 1989. - Vol. 155, Is. 1. - P. 249-255, DOI 10.1002/pssb.2221550125. - Cited References: 27 . - ISSN 0370-1972

РУБ Physics, Condensed Matter

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Доп.точки доступа:
Savitskii, A. F.; Баюков, Олег Артемьевич
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On the two-phase magnetic state in a CuxZn1-xCr2Se4 cation-substituted chalcogenide spinel / A. D. Balaev [et al.] // Phys. Solid State. - 2001. - Vol. 43, Is. 6. - P. 1089-1092, DOI 10.1134/1.1378149. - Cited References: 8 . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: The region of the concentration magnetic phase transition in a CuxZn1-xCr2Se4 chalcogenide spinel in which the substituted ion concentration x smoothly varies from 0.1 to 0.2 with a step of 0.02 is thoroughly investigated. An anomalous behavior of the Curie temperature is observed. This anomaly is associated with the nucleation of ferromagnetically ordered microregions in the vicinity of Cr ions with an intermediate valence and subsequent long-range magnetic ordering at a critical Cu concentration in the range 0.12 x(c) 0.14. The possible coexistence of ferro- and antiferromagnetism in the same temperature range is revealed. (C) 2001 MAIK "Nauka/Interperiodica".

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

Доп.точки доступа:
Balaev, A. D.; Балаев, Александр Дмитриевич; Zhukov, E. G.; Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Popel, E. P.
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Beznosikov, B. V.
Prediction of pra-phases of layered perovskite-like structures with cation vacancies / B. V. Beznosikov, K. S. Aleksandrov // J. Struct. Chem. - 2002. - Vol. 43, Is. 1. - P. 172-175, DOI 10.1023/A:1016098521933 . - ISSN 0022-4766

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РИНЦ,
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Публикация на русском языке Безносиков, Борис Валерьевич. Прогноз прафаз слоистых перовскитоподобных структур с катионными вакансиями [Текст] / Б. В. Безносиков, К. С. Александров // Журн. структ. химии. - Новосибирск : Изд-во СО РАН, 2002. - Т. 43 № 1. - С. 184-187

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Безносиков, Борис Валерьевич
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Zinenko, V. I.
Statistical mechanics of cation ordering and lattice dynamics of PbZrxTi1-xO3 solid solutions / V. I. Zinenko, S. N. Sofronova // Phys. Solid State. - 2004. - Vol. 46, Is. 7. - P. 1291-1300, DOI 10.1134/1.1778455. - Cited References: 18 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PEROVSKITE
Аннотация: An effective Hamiltonian for Zr-Ti cation ordering in PbZrxTi1 - xO3 solid solutions is written out. To determine the parameters of the effective Hamiltonian, a nonempirical calculation is performed within an ionic-crystal model taking into account the deformation and dipole and quadrupole polarizabilities of ions. The thermodynamic properties of cation ordering are studied using the Monte Carlo method. The calculated phase transition temperatures (180 and 250 K for the concentrations x = 1/3 and 1/2, respectively) are much lower than the melting temperature of the compound under study. At such temperatures, the ordering kinetics is frozen and, in reality, the phase transition to the ordered phase does not occur, in agreement with experimental observations. Within the same ionic-crystal model, we calculated the high-frequency permittivity, Born dynamic charges, and the lattice vibration spectrum for a completely disordered phase and certain ordered phases. It is shown that soft vibration modes, including ferroelectric ones, exist in the lattice vibration spectrum of both the completely disordered and the ordered phases. (C) 2004 MAIK "Nauka / Interperiodica".

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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:
Sofronova, S. N.; Софронова, Светлана Николаевна; Зиненко, Виктор Иванович
}
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Zinenko, V. I.
The nonempirical calculation of the cation ordering and lattice dynamics in the solid solutions of PbSc1/2Nb1/2O3 and PbSc1/2Ta1/2O3 / V. I. Zinenko, S. N. Sofronova ; ed.: A Kaplyanskii, A Akimov, Akimov, // 11th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004) (JUL 25-30, 2004, St Petersburg, RUSSIA) : WILEY-V C H VERLAG GMBH, 2004. - P. 3047-3051, DOI 10.1002/pssc.200405286. - Cited References: 10 . - ISBN 3-527-40588-7

РУБ Physics, Condensed Matter

Аннотация: An effective Hamiltonian for the study of Sc-Nb(Ta) cation ordering in PbSc1/2Nb(Ta)(1/2)O-3 solid solutions is written out. To determine the parameters of the effective Hamiltonian, a nonempirical calculation is performed within an ionic-crystal model taking into account the deformation, dipole and quadrupole polarizabilities of ions. The phase transition temperatures are calculated by mean field, cluster approximations and Monte-Carlo method. Within the same ionic-crystal model, we calculated the high-frequency permittivity, Born dynamic charges, and the phonon spectrum for a completely disordered and ordered phases. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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

Доп.точки доступа:
Sofronova, S. N.; Софронова, Светлана Николаевна; Зиненко, Виктор Иванович
}
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Zinenko, V. I.
Statistical mechanics of cation ordering in PbSc1/2Ta1/2O3 and PbSc1/2Nb1/2O3 solid solutions / V. I. Zinenko, S. N. Sofronova // Phys. Solid State. - 2005. - Vol. 47, Is. 12. - P. 2309-2314, DOI 10.1134/1.2142896. - Cited References: 17 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITION
   PEROVSKITE
   DISORDER
   FERROELECTRICS
   CRYSTALS
   MODEL
Аннотация: A model Hamiltonian for B cation ordering (Sc-Nb(Ta)) in PbSc1/2Nb1/2O3 and PbSc1/2Ta1/2O3 solid solutions is constructed. The parameters of the model Hamiltonian are determined from the ab initio calculation within the ionic crystal model with allowance made for the deformability and the dipole and quadrupole polarizabilities of the ions. The temperatures of the phase transition due to the ordering of the B cations are calculated by the Monte Carlo method in the mean-field and cluster approximations. The phase transition temperatures calculated by the Monte Carlo method (1920 K for PbSc1/2Ta1/2O3 and 1810 K for PbSc1/2Nb1/2O3) are consistent with the experimental data (1770 and 1450 K, respectively). The thermodynamic properties of the cation ordering are investigated using the Monte Carlo method. (c) 2005 Pleiades Publishing, Inc.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, 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:
Sofronova, S. N.; Софронова, Светлана Николаевна; Зиненко, Виктор Иванович
}
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Effect of central cation substitutionon the properties and phase transitions in (NH4)3Me(O2)2F4 oxyfluorides / V. D. Fokina, I. N. Flerov, M. S. Molokeev [et al.] // The 6th International Seminar on Ferroelastic Physics : abstract book. - Voronezh, 2009. - P. 5

Материалы конференции

Доп.точки доступа:
Fokina, V. D.; Фокина, Валентина Дмитриевна; Flerov, I. N.; Флёров, Игорь Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Pogoreltsev, E. I.; Погорельцев, Евгений Ильич; Bogdanov, E. V.; Богданов, Евгений Витальевич; Laptev, Y. V.; Воронежский государственный технический университет; Российская академия наук; International Seminar on ferroelastic physics (6 ; 2009 ; Sept. 22-25 ; Voronezh); Международный семинар по физике сегнетоэластиков (6(11) ; 2009 ; 22-25 сент. ; Воронеж)
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Magnetic and electrical properties of cation-substituted sulfides Me (x) Mn1-x S (Me = Co, Gd) / S. S. Aplesnin [et al.] // Phys. Solid State. - 2009. - Vol. 51, Is. 4. - P. 698-701, DOI 10.1134/S1063783409040076. - Cited References: 17. - This study was supported by the Russian Foundation for Basic Research RFFI-BRFFI (project no. 0802-90031) and FFIRB (project no. F08R-037). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ALPHA-MNS
MAGNETORESISTANCE
TRANSPORT
Аннотация: The temperature dependences of the specific magnetization sigma and the electrical resistivity rho of Me (x) Mn1 - x S single crystals (Me= Co, Gd; x= 0.05) have been studied in the temperature range 80 K T 1000 K. The samples under study have revealed the presence of a spontaneous magnetic moment below the N,el temperature (T (N)) and ferromagnetic clusters in Gd0.05Mn0.95S in the temperature range 146 K T 680 K. Substitution of gadolinium for manganese initiates a transition from p-type to n-type conduction. The change in the conduction type is accompanied by an increase in the electrical resistivity at 300 K by approximately one order of magnitude and, accordingly, by a decrease in the activation energy. The magnetic and electrical properties of the crystals under study have been interpreted in terms of the cluster model with temperature-dependent ferromagnetic exchange and an electron localized in this cluster.

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Держатели документа:
[Aplesnin, S. S.
Ryabinkina, L. I.
Romanova, O. B.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
[Sokolov, V. V.
Pichugin, A. Yu.] Russian Acad Sci, Siberian Branch, Inst Inorgan Chem, Novosibirsk 630090, Russia
[Galyas, A. I.
Demidenko, O. F.
Makovetskii, G. I.
Yanushkevich, K. I.] Natl Acad Sci Belarus, Sci Pract Mat Res Ctr, Minsk 220072, Byelarus
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Reshetnev Siberian State Aerospace University, pr. im. Gazety Krasnoyarski rabochi 31, Krasnoyarsk 660014, Russian Federation
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, ul. Akademika Lavrent'eva 3, Novosibirsk 630090, Russian Federation
Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, ul. P. Brovki 19, Minsk 220072, Belarus

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Romanova, O. B.; Романова, Оксана Борисовна; Sokolov, V. V.; Pichugin, A. Y.; Galyas, A. I.; Demidenko, O. F.; Makovetskii, G. I.; Yanushkevich, K. I.; Russian Foundation for Basic Research RFFI-BRFFI [0802-90031]; FFIRB [F08R-037]
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10.

Zamkova, N. G.
Effect of cation substitution on the lattice dynamics and ferroelectric instability of cubic BaTiO3 and BaZrO3 doped with Bi and La ions / N. G. Zamkova, V. I. Zinenko // Phys. Solid State. - 2009. - Vol. 51, Is. 5. - P. 973-981, DOI 10.1134/S1063783409050151. - Cited References: 11. - This work was supported by the Russian Foundation for Basic Research, project no. 07-02-00069. . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CERAMICS
Аннотация: The spectra of lattice vibration frequencies of solid solutions Ba1 - x Bi(2x/3)a-- Ti-x/3(Zr)O-3 and Ba1 - x La (x) Ti(Zr)(1 - x/4)a-- O-x/4(3) are calculated in terms of a generalized Gordon-Kim model with inclusion of the dipole and quadrupole polarizabilities. Over the entire concentration range, the calculated phonon spectra contain a ferroelectric soft mode. The effect of various interactions on the ferroelectric instability of these solid solutions is studied. It is shown that the character of ferroelectric instability is largely determined by the mechanism of charge compensation.

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Держатели документа:
[Zamkova, N. G.
Zinenko, V. I.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Замкова, Наталья Геннадьевна; Russian Foundation for Basic Research [07-02-00069]
}
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