TEM investigation of the domain structure in PbHfO3 and PbZrO3 antiferroelectric perovskites
TEM investigation of the domain structure in PbHfO3 and PbZrO3 antiferroelectric perovskites
复制标题
DOI：
10.1007/s10853-020-04361-8
复制
发表时间：
2020-01
影响因子：
4.5
通讯作者：
Z. Fan;T. Ma;Jing Wei;T. Yang;Lin Zhou;X. Tan
中科院分区：
文献类型：
--
作者：
Z. Fan;T. Ma;Jing Wei;T. Yang;Lin Zhou;X. Tan
利用透射电子显微镜对原型反铁电钙钛矿PbHfO 3的畴结构进行了全面的研究。直接揭示了反铁电畴内的反平行Pb位移、一个{110} C原子面和四个{110} C原子面（下标c表示伪立方符号）极性平移边界。在微米水平上，观察和分析了PbHfO 3中的各种反铁电畴结构，包括新的“四叶草图案”畴形态。在另一个原型反铁电钙钛矿PbZrO 3，反铁电域似乎有利于“层状图案”。这两种模式的结合使得PbZrO 3中的畴结构更加复杂。
The domain structure is comprehensively investigated in the prototype antiferroelectric perovskite PbHfO3using transmission electron microscopy. The antiparallel Pb-displacements, and the one {110}c-atomic-plane and four {110}c-atomic-plane (subscript c denotes the pseudo-cubic notation) polar translational boundaries within antiferroelectric domains are directly revealed. At the micrometer level, various antiferroelectric domain structures are observed and analyzed in PbHfO3, including the new “cloverleaf pattern” domain morphology. In another prototype antiferroelectric perovskite PbZrO3, antiferroelectric domains appear to favor the “lamellar pattern.” The combination of these two patterns makes even more complicated domain structures in PbZrO3.