Zobrazeno 1 - 10 of 54 pro vyhledávání: '"I. G. Siny"'
1
A central peak in light scattering from the relaxor-type ferroelectric Na1/2Bi1/2TiO3
Autor: E. A. Rogacheva, Sergey Lushnikov, J. M. Beny, P. P. Syrnikov, E. Husson, I. G. Siny
Publikováno v: Physica B: Condensed Matter. 293:382-389
A complex perovskite-type single crystal Na 1/2 Bi 1/2 TiO 3 (NBT) has been studied by Raman scattering. A broad central component has been revealed to analyze the temperature dependence of its intensity and width for the first time. The central comp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb8ec29fcd47ff7fd606c6db712c27c3
https://doi.org/10.1016/s0921-4526(00)00549-4
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2
Raman scattering in the relaxor-type ferroelectric Na1/2Bi1/2TiO3
Autor: P. P. Syrnikov, E. A. Rogacheva, I. G. Siny, J. M. Beny, S. G. Lushnikov, E. Husson
Publikováno v: Ferroelectrics. 248:57-78
A complex perovskite-type single crystal Na1/2Bi1/2TiO3 (NBT) with a cubic-tetragonal-trigonal sequence of phase transition, ending in a ferroelectric state, has been studied by Raman scattering. In additional to a possible soft mode which softens fa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2febb41b84a6d642bcdc8f47c318d72b
https://doi.org/10.1080/00150190008223669
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4
Raman spectroscopy of KTN thin films
Autor: Ram S. Katiyar, I. G. Siny, L. A. Knauss, A. Savvinov
Publikováno v: Ferroelectrics Letters Section. 25:59-67
The renewed interest in the KTa1-x-NbxO (KTN) mixed perovskite materials, especially in single crystalline thin film forms, is connected with their remarkable dielectric properties in the dilute compositions. Off-center Nb ions in the highly polariza
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7b622de2e834b61001ae5e9dafec204
https://doi.org/10.1080/07315179908204584
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5
Anomalous behavior of the phonon spectrum of the relaxor ferroelectric PMN at low temperatures
Autor: Severian Gvasaliya, E. A. Goremychkin, S. G. Lushnikov, I. G. Siny, I. L. Sashin
Publikováno v: Scopus-Elsevier
The density of states (DOS) has been measured in powdered Pb(Mg1/3Nb2/3)O3 (PMN) by inelastic neutron scattering in the temperature range from 300K to 50K. The one-phonon approximation was used to calculate the DOS from measured spectra. The data ana
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fc46e54c89ee870ef8cfee94f52f873
https://doi.org/10.1080/00150199908230296
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6
PbMg1/3Nb2/3O3as a model object for light scattering experiments
Autor: S. G. Lushnikov, I. G. Siny, V. H. Schmidt, R. S. Katiyar
Publikováno v: Ferroelectrics. 226:191-215
A classical relaxor material, PbMg1/3Nb2/3O3 (PMN), has a long history of investigations by Raman and Brillouin spectroscopies. Earlier results on Raman scattering have emphasized a predominant role of disorder and, on the whole, confirmed a model of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6983930e9176b606774e98551bf73eb2
https://doi.org/10.1080/00150199908230300
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7
Phonons and fractons in the vibration spectrum of the relaxor ferroelectric PbMg1/3Nb2/3O3
Autor: Sergey Lushnikov, S. N. Gvasaliya, I. G. Siny
Publikováno v: Physica B: Condensed Matter. :286-289
This paper describes the results of Raman and inelastic neutron-scattering studies for the PbMg1/3Nb2/3O3 (PMN) relaxor ferroelectric. The comparative analysis of the low-frequency region of the vibrational spectrum has revealed the excitation at the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6163eb6b1f447dd06b7ead23be0eb0bd
https://doi.org/10.1016/s0921-4526(98)01359-3
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8
Raman spectroscopy of Mg-Ta order-disorder in
Autor: Ruyan Guo, Amar S. Bhalla, Ram S. Katiyar, I. G. Siny, Ruiwu Tao
Publikováno v: Journal of Physics and Chemistry of Solids. 59:181-195
A complex perovskite-type material BaMg13Ta23O3 (BMT) with remarkable microwave dielectric properties was studied by microprobe Raman scattering in a wide temperature interval from 30 up to 1200 K. Two of the most appropriate practical forms of BMT m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83695fe9fe98238056a52b2cc9732b1d
https://doi.org/10.1016/s0022-3697(97)00154-6
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9
Transition dynamics in relaxor ferroelectrics
Autor: Ram S. Katiyar, I. G. Siny
Publikováno v: Ferroelectrics. 206:307-324
Raman scattering was used to study two model relaxor ferroelectrics, namely PbMg1/3 Nb2/3O3(PMN) with the 1:2 stoichiometric composition of Mg2+ and Nb5+ ions in the oxygen octahedrons and PbSc1/2Ta1/2O3 (PST) with the 1:1 stoichiometric composition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::839f6bc97f842430f1d6e39017eb7e3d
https://doi.org/10.1080/00150199808009166
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10
Central peak in light scattering from the relaxor ferroelectricPbMg1/3Nb2/3O3
Autor: R. S. Katiyar, I. G. Siny, E. A. Rogacheva, S. G. Lushnikov
Publikováno v: Physical Review B. 56:7962-7966
A model relaxor ferroelectric ${\mathrm{PbMg}}_{1/3}{\mathrm{Nb}}_{2/3}{\mathrm{O}}_{3}$ (PMN) in single-crystal form has been studied by Raman scattering with special attention to the low-frequency spectra in the vicinity of both the diffuse ferroel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73272eafc50fc5f8c2864ebaada9d592
https://doi.org/10.1103/physrevb.56.7962
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