Second-Order Raman Scattering in Ferroelectric Ceramic Solid Solutions LiNbxTa1-xO3

被引：6

作者：

Sidorov, Nikolay ^{[1
]}

Palatnikov, Mikhail ^{[1
]}

Pyatyshev, Alexander ^{[2
]}

Sverbil, Pavel ^{[2
]}

机构：

[1] Russian Acad Sci, Tananaev Inst Chem, Subdiv Fed Res Ctr, Kola Sci Ctr, Apatity 184206, Russia

[2] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

来源：

CRYSTALS | 2022年 / 12卷 / 04期

关键词：

lithium niobate tantalate; Raman scattering; second order; biphonon; ferroelectric; ceramic solid solution; LITHIUM-NIOBATE; DIELECTRIC-PROPERTIES; 2-PHONON RESONANCES; TANTALATE; PHONONS; SPECTRA; SPECTROSCOPY; CRYSTALS; RANGE;

D O I：

10.3390/cryst12040456

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In the second-order Raman spectra of ceramic solid solutions, LiNbxTa1-xO3 weak overtone bands of fully symmetric fundamental polar excitations were observed for the first time. The frequencies of the two bands exceeded the value of the overtone frequency corresponding to the fully symmetrical vibration 4A(1)(z). The possibility of the existence of phonon bound states of the antipolar type in the vibrational spectrum of LiNbxTa1-xO3 ceramics is predicted.

引用

页数：10

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