Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.1080/00150193.2020.1722883
Ключевые слова: sbn-x crystals, polar regions, ferroelectric phase transition, second harmonic generation, brillouin spectroscopy, Paraelectric phase, Non-linear response, Intermediate temperatures, Chemical compositions, Temperature distribution, Polarization, Nonlinear optics, Strontium, Spontaneous polarizations, Strontium barium niobate crystals, Temperature behavior, Temperature dependence, Harmonic generation, Niobium compounds, Crystals, second harmonic generation Barium
Аннотация: In SrxBa1-xNb2O6 crystals (x = 0.33, 0.5, 0.61, and 0.75), temperature dependences of spontaneous polarization, strain, elastic modules, and second harmonic generation (SHG) signal are compared. It is revealed that SHG describes the temperature dependences of dipole moments in polar nanoregions in paraelectric phase. In the vicinitПоказать полностьюy of the phase transition in paraelectric phase, SHG reflects the temperature behavior of relatively large and long-lived polar asymmetric regions as indicated by the presence of the intermediate temperature range on the temperature dependence of this nonlinear response.
Журнал: FERROELECTRICS
Выпуск журнала: Vol. 560, Is. 1
Номера страниц: 54-60
ISSN журнала: 00150193
Место издания: ABINGDON
Издатель: TAYLOR & FRANCIS LTD