Инд. авторы:	Pugachev A.M., Kovalevskii V.I., Malinovskii V.K., Malitskaya M.A., Raevskaya S.I., Raevskii I.P., Surovtsev N.V.
Заглавие:	Second harmonic generation study of local polar inhomogeneities in Pb-3(MgNb2)O-9
Библ. ссылка:	Pugachev A.M., Kovalevskii V.I., Malinovskii V.K., Malitskaya M.A., Raevskaya S.I., Raevskii I.P., Surovtsev N.V. Second harmonic generation study of local polar inhomogeneities in Pb-3(MgNb2)O-9 // Physics of The Solid State. - 2015. - Vol.57. - Iss. 3. - P.472-475. - ISSN 1063-7834. - EISSN 1090-6460.
Внешние системы:	DOI: 10.1134/S1063783415030245; SCOPUS: 2-s2.0-84938063578; WoS: 000351529100007;
Реферат:	eng: The temperature dependence of the second harmonic generation in the lead magnesium niobate (Pb-3(MgNb2)O-9) crystal has been studied. It has been shown that the second harmonic generation in the crystal occurs in local non-centrosymmetric regions in the sample bulk, whereas a similar response from a fine powder is caused by effects associated with decreasing grain sizes. Maximum changes in polarization in local regions occur near the Vogel-Fulcher temperature in the range of 200-270 K. In the same temperature range, according to the published data, gradual freezing of polar regions and the formation of an infinite cluster is assumed.
Ключевые слова:	PB(MG1/3NB2/3)O-3; PHASE; BIREFRINGENCE; SINGLE-CRYSTALS; RELAXOR FERROELECTRICS; BATIO3; CERAMICS;
Издано:	2015
Физ. характеристика:	с.472-475