Neutron scattering study of structural change in relaxor Pb(Zn1/3Nb2/3)O3
Neutron scattering study of structural change in relaxor Pb(Zn1/3Nb2/3)O3
复制标题
弛豫剂 Pb(Zn1/3Nb2/3)O3 结构变化的中子散射研究
DOI：
10.1016/s0022-3697(99)00134-1
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Y. Yamada
中科院分区：
文献类型：
--
作者：
T. Iwase;H. Tazawa;K. Fujishiro;Y. Uesu;Y. Yamada
用中子粉末衍射方法分析了弛豫Pb（Zn 1/3 Nb 2/3）O3（PZN）的结构。PZN在足够高的温度下具有无序的钙钛矿结构。随着温度的降低，菱形相出现在高于最大介电常数的温度，并逐渐增长的非极性立方矩阵，但并不占主导地位的整个晶体。这一事实支持了异相涨落在弛豫体介电行为中起重要作用的观点。
The structure of the relaxor Pb(Zn1/3Nb2/3)O3(PZN) was analyzed by neutron powder diffraction method. PZN has a disordered perovskite structure at a sufficiently high temperature. With decreasing temperature, the rhombohedral phase appears at a temperature higher than that of the maximum dielectric constant and grows gradually in the nonpolar cubic matrix but does not prevail on the whole crystal. The fact supports the idea that heterophase fluctuation plays an important role in the dielectric behavior of relaxors.