The A-site driven phase transition procedure of (Pb0.97La0.02)(Zr0.42Sn0.40Ti0.18)O3 ceramics: An evidence from electronic structure variation

被引：8

作者：

Chen, X. ^{[1
]}

Jiang, P. P. ^{[1
]}

Duan, Z. H. ^{[1
]}

Hu, Z. G. ^{[1
]}

Chen, X. F. ^{[2
]}

Wang, G. S. ^{[2
]}

Dong, X. L. ^{[2
]}

Chu, J. H. ^{[1
]}

机构：

[1] E China Normal Univ, Key Lab Polar Mat & Devices, Minist Educ, Dept Elect Engn, Shanghai 200241, Peoples R China

[2] Chinese Acad Sci, Key Lab Inorgan Funct Mat & Devices, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 19期

关键词：

INTERBAND CRITICAL-POINTS; BAND-STRUCTURE; ORIGIN;

D O I：

10.1063/1.4829757

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The transition of (Pb0.97La0.02)(Zr0.42Sn0.40Ti0.18)O-3 (PLZST) ceramic has been investigated by temperature-dependent X-ray diffraction (XRD) and spectroscopic ellipsometry (SE). The rhombohedral and tetragonal symmetries are confirmed by XRD analysis. Two interband transitions (E-cp1 and E-cp2) located at about 3.7 and 5.2 eV can be derived from the second derivative of the complex dielectric functions using the standard critical point (SCP) model. Except for the negative temperature coefficient parts, the transitions present additional parts corresponding to appearance of the antiferroelectric (AFE) phase. The phenomena can be attributed to variation of the electronic structure during A-site driven phase transition. (C) 2013 AIP Publishing LLC.

引用

页数：5

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