Raman Scattering in Relaxor Pb(Zn1/3Nb2/3)O3
Raman Scattering in Relaxor Pb(Zn1/3Nb2/3)O3
复制标题
弛豫体 Pb(Zn1/3Nb2/3)O3 中的拉曼散射
DOI：
10.1143/jjap.37.5410
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Y. Ishibashi
中科院分区：
文献类型：
--
作者：
H. Ohwa;M. Iwata;N. Yasuda;Y. Ishibashi
在100 ~ 773 K的宽温度范围内，测量了Pb（Zn_（1/3）Nb_（2/3））O_3（PZN）单晶弛豫铁电体的拉曼光谱。拉曼活性模式存在的扩散转变温度约413 K（立方相），这意味着在PZN的立方相的空间群不是Pm 3 m。发现在室温以上，X（ZZ）Y和X（ZX）Y的拉曼光谱是不同的，而在室温以下，它们几乎是相同的。
The Raman spectra of relaxor ferroelectrics in the single crystal Pb(Zn1/3Nb2/3)O3 (PZN) have been measured with the 90°scattering geometry over a wide temperature range between 100 K and 773 K and over a frequency range up to 1000 cm-1. The Raman-active modes exist well above the diffuse transition temperature of about 413 K (the cubic phase) implying that the space group of the cubic phase in PZN is not Pm3m. It is found that far above room temperature, the Raman spectra in the X(ZZ)Y and X(ZX)Y geometries are different, whereas below room temperature they are almost the same.