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1.


    Gross, E. F.
    The rotational vibrations of molecules crystal lattices of organic substances and scatterings spectra / E. F. Gross, A. V. Korshunov // Acta Physicochimica URSS. - 1945. - Vol. 20, n. 3. - P. 351

Публикация на русском языке Гросс Е. Ф. Вращательные качания молекул в кристаллической решетке органических веществ и спектры рассеяния [Текст] / Е. Ф. Гросс, А. В. Коршунов // Журн. эксперим. и теор. физ. - 1946. - Т. 16 вып. 1. - С. 53-59


Доп.точки доступа:
Korshunov, A. V.; Коршунов, Анатолий Васильевич; Гросс Е. Ф.
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2.


    KIM, P. D.
    INTERFERENCE OF ELASTIC-WAVES, EXCITED BY VIBRATIONS OF DOMAIN-WALLS / P. D. KIM, D. C. KHVAN // Zhurnal Tek. Fiz. - 1983. - Vol. 53, Is. 5. - P. 947-949. - Cited References: 10 . - ISSN 0044-4642
РУБ Physics, Applied


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Доп.точки доступа:
KHVAN, D. C.
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3.


   
    Anharmonic thermal atomic vibrations in the cubic phase of Cs//2NaNdCl//6 single crystals. / I. P. Makarova [et al.] // Phys Status Solidi B. - 1984. - Vol. 121, Is. 2. - P. 481-486 . - ISSN 0370-1972
Кл.слова (ненормированные):
CRYSTALS -- X-RAYS - Diffraction -- ANHARMONIC THERMAL ATOMIC VIBRATIONS -- CUBIC PHASE -- PHASE TRANSITIONS -- CESIUM COMPOUNDS
Аннотация: Thermal atomic vibrations in the cubic phase of Cs//2NaNdCl//6 single crystal undergoing the structural phase transition (PT) at 138 K are investigated from the data of X-ray diffraction obtained at 278, 218, and 148 K. A significant anisotropy of thermal vibrations and their deviations from harmonic behavior are found for the Cl-atoms of the structure. These atoms displace from their equilibrium positions below PT due to the tilts of the octahedral groups.

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Держатели документа:
Acad of Sciences of the USSR, A. V., Shubnikov Inst of Crystallography,, Moscow, USSR, Acad of Sciences of the USSR, A. V. Shubnikov Inst of Crystallography, Moscow, USSR

Доп.точки доступа:
Makarova, I. P.; Misyul, S. V.; Мисюль, Сергей Валентинович; Muradyan, L. A.; Bovina, A. F.; Бовина, Ася Федоровна; Simonov, V. I.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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4.


    Vetrov, S. Ya.
    Surface vibrations of FCC crystals with surface relaxation / S. Ya. Vetrov, V. F. Shabanov, M. E. Smokotin // Fiz. Tverd. Tela. - 1990. - Vol. 32, Is. 11. - P. 3240-3244. - Cited References: 11 . - ISSN 0367-3294
РУБ Physics, Condensed Matter


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Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Smokotin, M. E.; Ветров, Степан Яковлевич
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5.


    Makarova, I. P.
    X-ray diffraction study of RbLiCrO4 / I. P. Makarova, I. A. Verin, K. S. Aleksandrov // Ferroelectrics. - 1991. - Vol. 124, Is. 1. - P. 91-96, DOI 10.1080/00150199108209420. - Cited References: 12 . - ISSN 0015-0193
РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
LITHIUM POTASSIUM-SULFATE
   THERMAL VIBRATIONS
   CRYSTALS
   PROGRAM
   KLISO4
   LIKSO4
Аннотация: Crystal structure of RbLiCrO4 was determined in G3 phase (sp. gr. P31c) at 293, 428, 493, 523 K and in G2 phase (sp. gr. P63) at 553, 583 K applying X-ray diffraction data. The investigated crystals exhibit ‘twinning by merohedry’. The analysis of intensities and influence of anomalous scattering on them allowed us to choose twin elements and atomic configurations of twin domains for all the investigated specimens.

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Доп.точки доступа:
Verin, I. A.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; European meeting on ferroelectricity(7 ; 1991 ; Jul ; 08-12 ; Dijon, France)
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6.


    Makarova, I. P.
    Structure and twinning of RbLiCrO4 crystals / I. P. Makarova, I. A. Verin, K. S. Aleksandrov // Acta Crystallogr. B. - 1993. - Vol. 49. - P. 19-28, DOI 10.1107/S0108768192006141. - Cited References: 14 . - ISSN 0108-7681
РУБ Crystallography
Рубрики:
LITHIUM POTASSIUM-SULFATE
   NEUTRON-DIFFRACTION
   THERMAL VIBRATIONS
   KLISO4
   PROGRAM
   LIKSO4
Аннотация: The crystal structures of the G3 (space group P31c) and G2 (space group P6(3)) phases of RbLiCrO4 have been determined from X-ray diffraction data (Mo Kalpha radiation) at 293, 428, 493 and 523 K (G3 phase) and 553 and 583 K (G2 phase). The RbLiCrO4 crystals exhibit twinning by merohedry with twin laws in the G3 phase: 2 parallel-to [001], m perpendicular-to [001], 1BAR; in the G2 phase: m parallel-to [001], 2 perpendicular-to [001], 1BAR. The analysis of diffraction intensities and influence of anomalous scattering on them provided the unambiguous determination of the twin laws for all the specimens investigated. The structure has been refined using the approximation of the anharmonic thermal vibrations of atoms.

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Держатели документа:
ACAD SCI,INST PHYS,SIBERIAN DIV,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН

Доп.точки доступа:
Verin, I. A.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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7.


   
    Lattice dynamics and ferroelectric instability in ordered and disordered PbSc1/2Ta1/2O3 and PbSc1/2Nb1/2O3 solid solutions / V. I. Zinenko [et al.] // J. Exp. Theor. Phys. - 2007. - Vol. 105, Is. 3. - P. 617-625, DOI 10.1134/S1063776107090191. - Cited References: 23 . - ISSN 1063-7761
РУБ Physics, Multidisciplinary
Рубрики:
RELAXOR FERROELECTRICS
   PHASE-TRANSITION
   LOCAL-STRUCTURE
   PB(SC1/2NB1/2)O-3
   PEROVSKITE
   CRYSTALS
Кл.слова (ненормированные):
Dipole moment -- Lattice vibrations -- Negative ions -- Phonons -- Positive ions -- Solid solutions -- Dynamic Born charges -- Ferroelectric instabilities -- Frequency spectra -- Gordon-Kim models -- Oxygen anions -- Phonon spectra -- Ferroelectricity
Аннотация: The dynamic Born charges and the frequency spectra of lattice oscillations in the crystals of ordered and disordered PbSc1/2Ta1/2O3 (PST) and PbSc1/2Nb1/2O3 (PSN) solid solutions have been calculated within the framework of the generalized Gordon-Kim model with allowance for the dipole and quadrupole polarizabilities. The phonon spectra of both compounds contain ferroelectric soft modes. The influence of various interactions on the magnitude of dynamic charges and ferroelectric instability in PSN and PST solid solutions has been studied and it is shown that both these charges and the ferroelectric instability are determined by the competition between long-range dipole-dipole interactions and short-range dipole-charge interactions, the determining role played by the interaction of Nb (Ta) cations and oxygen anions in the Nb-O (Ta-O) bond direction.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Lebedev Physical Institute, Russian Academy of Sciences, Moscow 119991, Russian Federation

Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Zamkova, N. G.; Замкова, Наталья Геннадьевна; Maksimov, E. G.; Sofronova, S. N.; Софронова, Светлана Николаевна
}
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8.


   
    Manifestation of Vacancies in a Spectrum of Organic Molecular Crystal Lattice Vibrations [Текст] / M. A. Korshunov // arXiv. - 2008. - Ст. 0802.2480

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Доп.точки доступа:
Korshunov, M.A.
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9.


    Zhandun, V. S.
    Lattice dynamics, ferroelectric and antiferroeelctric instabilities, and the ferroelectric phase transition in disordered PbB(1/2)' B(1/2)'' O(3) (B ' = Ga, In, Lu; B '' = Nb, Ta) solid solutions / V. S. Zhandun, N. G. Zamkova, V. I. Zinenko // J. Exp. Theor. Phys. - 2008. - Vol. 106, Is. 6. - P. 1109-1117, DOI 10.1134/S1063776108060101. - Cited References: 29 . - ISSN 1063-7761
РУБ Physics, Multidisciplinary
Рубрики:
STATISTICAL-MECHANICS
   PEROVSKITES
   CRYSTALS
   ORDER
   RELAXOR
   BATIO3
   PBTIO3
Кл.слова (ненормированные):
Crystal lattices -- Ferroelectricity -- Lattice vibrations -- Solids -- Ferroelectric (barium strontium titanate) -- Ferroelectric phase transitions -- Lattice (CO) -- Lattice dynamics -- Vibration spectrum -- Ferroelectric materials
Аннотация: The lattice vibration spectra, rf permittivity, and dynamic Born charges of disordered PbB(1/2)'B(1/2)'' O(3) (B' = Ga, In, Lu; B '' = Nb, Ta) solid solutions are calculated in terms of the generalized Gordon-Kim model. All the compounds are found to have soft modes related to the center (Gamma(15)) and boundary point R (R(15)) of the Brillouin zone; the frequencies of these modes are close. The ferroelectric phase transition temperatures and the spontaneous polarization in the ferroelectric phase are calculated for the solid solutions using a model Hamiltonian in the local mode approximation and the Monte Carlo method. These temperatures for the tantalum compounds are found to be higher than for the niobium compounds, and temperature t(s) increases with the atomic number of ion B'. A model where the antiferroelectric state is related to the condensation of modes Gamma(15) and R(15) is proposed. It is found that, for all compounds except for PbSc(1/2)Nb(1/2)O(3) and PbSc(1/2)Ta(1/2)O(3), the ferroelectric phase, which is only related to the condensation of mode R(15), and the antiferroelectric phase have similar energies. In PbIn(1/2)Ta(1/2)O(3), the antiferroelectric phase turns out to be energetically favorable.

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

Доп.точки доступа:
Zamkova, N. G.; Замкова, Наталья Геннадьевна; Zinenko, V. I.; Зиненко, Виктор Иванович; Жандун, Вячеслав Сергеевич
}
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10.


   
    IR active vibrations of a TbFe3(BO3)(4) crystal / M. I. Pashchenko [et al.] // Low Temp. Phys. - 2010. - Vol. 36, Is. 7. - P. 638-641 ; Физика низких температур, DOI 10.1063/1.3479413. - Cited References: 12 . - ISSN 1063-777X
РУБ Physics, Applied
Рубрики:
GDFE3(BO3)(4)
Аннотация: The IR reflection spectra of a TbFe3(BO3)(4) crystal are measured in the spectral range 200-2000 cm(-1) in E perpendicular to c polarization at temperatures 10 and 300 K. The reflection spectrum so obtained is analyzed and its interpretation is given on the basis of the internal vibrations of the ionic complexes BO33-, FeO69-, and TbO69- of the TbFe3(BO3)(4) crystal. Davydov splitting on the internal vibrational modes at a structural phase transition, which is accompanied by multiplication of the unit cell, was not observed in the experimental spectral range. This is due to the localization of the vibrations of the ionic complexes BO33-, FeO69-, and TbO69- of the TbFe3(BO3)(4) crystal. (c) 2010 American Institute of Physics. [doi:10.1063/1.3479413]

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Держатели документа:
[Pashchenko, M. I.
Bedarev, V. A.
Kut'ko, V. I.] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Besmaternykh, L. N.
Temerov, V. L.] Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
B. Verkin Inst. for Low Temperature Physics, Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
L. V. Kirenskii Inst. of Physics, The Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Pashchenko, M. I.; Bedarev, V. A.; Kut'ko, V. I.; Besmaternykh, L. N.; Temerov, V. L.; Темеров, Владислав Леонидович

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