Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Burkov S. I., Sorokin B. P., Glushkov D. A., Aleksandrov K. S.
Заглавие : Theory and computer simulation of the reflection and refraction of bulk acoustic waves in piezoelectrics under the action of an external electric field
Место публикации : Crystallogr. Rep. - 2005. - Vol. 50, Is. 6. - P.986-993. - ISSN 1063-7745, DOI 10.1134/1.2132408
Примечания : Cited References: 11
Аннотация: The basic equations describing the conditions for reflection and refraction of bulk acoustic wave at the interface between acentric crystals subjected to the action of a uniform external electric field are reported. Numerical analysis of the effect of this field on the reflection and refraction anisotropy of bulk acoustic waves at the crystal/vacuum and piezoelectrie/elastic-isotropic-medium interfaces is performed. (C) 2005 Pleiades Publishing, Inc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Burkov S. I., Sorokin B. P., Karpovich A. A., Aleksandrov K. S.
Заглавие : The influence of static homogeneous fields on the properties of saw in piezoelectrics
Место публикации : Ferroelectr. Lett. Sect. - 1992. - Vol. 14, Is. 5-6. - P.99-113. - ISSN 0731-5171, DOI 10.1080/07315179208203349
Примечания : Cited References: 11
Предметные рубрики: WAVES
Аннотация: Propagation of surface acoustic waves (SAW) in piezoelectric media deformed by the homogeneous static electric field E/homogeneous mechanical stress P has been considered. Green-Christoffel equations, boundary conditions and other necessary derivations have been obtained. The computer investigations Of anisotropy Of E(P) influence on the SAW propagation conditions in piezoelectrics Bi12SiO20 and Bi12GeO20 have been carried out.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Burkov S. I., Sorokin B. P., Aleksandrov K. S., Karpovich A. A.
Заглавие : Reflection and refraction of bulk acoustic waves in piezoelectrics under uniaxial stress
Место публикации : Acoust. Phys. - 2009. - Vol. 55, Is. 2. - P.178-185. - ISSN 1063-7710, DOI 10.1134/S1063771009020055
Примечания : Cited References: 10
Предметные рубрики: ELECTRIC-FIELD
Аннотация: Basic equations that describe the conditions of reflection and refraction of bulk acoustic waves at the boundary between acentric crystalline media under uniaxial stress are presented. The effect of uniaxial stress on the anisotropy of reflection and refraction of bulk acoustic waves is numerically analyzed for boundaries of the crystal-vacuum, piezoelectric crystal-piezoelectric crystal, and piezoelectric crystal-elastic isotropic medium types.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Coondoo I., Krylov A. S., Sharma D. K., Krylova S. N., Alikin D., Kumar J. S., Mirzorakhimov A., Melnikova N., Soares M. J., Kholkin A. L.
Заглавие : Temperature dependent structural, dielectric, Raman, piezoresponse and photoluminescence investigations in sol-gel derived BCZT ceramics
Место публикации : Mater. Chem. Phys. - 2022. - Vol. 277. - Ст.125526. - ISSN 02540584 (ISSN), DOI 10.1016/j.matchemphys.2021.125526
Примечания : Cited References: 82. - I.C. and J.S.K would like to acknowledge financial assistance by national funds (OE), through FCT – Fundação para a Ciência e a Tecnologia, I.P., in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19. This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the FCT/MCTES. This work was partially developed within the scope of the project i3N, UIDB/50025/2020 & UIDP/50025/2020, financed by national funds through the FCT/MEC. Part of this work (A.K.) was supported by the Ministry of Science and Higher Education of the Russian Federation (grant no. 075-15-2021-588). This research used resources of the Ural Center for Shared Use “Modern nanotechnology”, Ural federal University, Russia and the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”. The authors thank Dr. Gonzalo Irurueta, Center for Mechanical Engineering and Automation, University of Aveiro, Portugal and Dr. E. Venkata Ramana, Department of Physics, University of Aveiro, Portugal
Аннотация: 0.5Ba(Ti0.8Zr0.2)O3-0.5(Ba0.7Ca0.3)TiO3 [50BZT-50BCT or BCZT] based compounds have been the focus of a lot of research, particularly motivated by their high piezoelectric effect. However, the literature lacks an elaborate investigation of the phase transition behavior in BCZT ceramics obtained by wet chemistry processing. Here, we present an in-depth study on the temperature dependence of x-ray diffraction (XRD), Raman scattering, dielectric properties, local piezoresponse and photoluminescence (PL) to investigate the sequence of phase transitions in the BCZT ceramic synthesized via a chemical route. Phase formation was determined by Rietveld analysis of XRD data, while compositional homogeneity and elemental quantification of the compound was validated using energy dispersive x-ray spectroscopy (EDX) and x-ray photoelectron spectroscopy (XPS) studies. Detailed fitting of XPS data indicated the existence of Ti3+ species (∼6%) in the prepared BCZT. Phase transitions were examined by analyzing the modifications in the XRD profile of Bragg reflection {200} and anomalies observed in the temperature variation of dielectric and Raman spectra studied over a wide temperature range starting from 10K to beyond Curie temperature. Crystallographic transformation temperatures obtained from dielectric measurement agreed well with those assessed from the temperature evolution of Raman spectra. In addition to other transitions, Raman scattering results revealed the existence of a transition from to phase near −175 °C, a transition that has not been interpreted in BCZT (and generally not observed in parent BaTiO3 compound). The luminescence response was studied by photoluminescence (PL) spectroscopy in the temperature range 15–300 K. The position of the PL peak was observed to shift with temperature and discontinuities in the wavelength shift were noted near phase transitions. Evolution of domain morphology with temperature was examined by piezoresponse force microscopy technique. Consolidated results assign the phase sequence in sol-gel derived BCZT as: R(R3c)→-175±10°CR(R3m)→-50±10°CO→40±10°CT→120±10°CC.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Turchin, Pavel P., Burkov, S. I., Turchin, Vladimir, I, Pletnev, Oleg N., Chulkova, Marina Yu, Nechepuryshina, Anastasia G.
Заглавие : Anisotropy of the electromechanical characteristics of SH-waves and Lamb waves in yttrium aluminum borate single crystals
Коллективы : Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2022. - Vol. 15, Is. 1. - P.80-87. - ISSN 1997-1397, DOI 10.17516/1997-1397-2022-15-1-80-87; Журн. СФУ. Матем. и физика. - ISSN 2313-6022(eISSN)
Примечания : Cited References: 24. - The study was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (research project code FSRZ-2020-0011)
Аннотация: The anisotropy of the electromechanical properties of SH-waves and Lamb waves in yttrium aluminum borates, which are nonmagnetic representatives of the RMe3(BO3)4 single crystals family (where R=Y, La-Lu; M=Fe, Al, Cr, Ga, Sc) with unique properties of magnetoelectrics and multiferroics, has been studied. In the process of the numerical simulation of the acoustic waves characteristics, the values of linear electromechanical constants of YAl3(BO3)4 single crystals, previously measured by ultrasonic pulse echo and quasi-static methods, have been used.Исследована анизотропия электромеханичеких характеристик SH-волн и волн Лэмба в иттриевых алюмоборатах, которые являются немагнитным представителем семейства монокри- сталлов RMe3(BO3)4 (где R=Y, La-Lu; M=Fe, Al, Cr, Ga, Sc) с уникальными свойствами магнитоэлектриков и мультиферроиков. При численном моделировании характеристик акустических волн использованы значения линейных электромеханических постоянных монокристаллов YAl3(BO3)4, измеренных ранее ультразвуковым эхо-импульсным и квазистатическим методами.
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