Structural properties and the fluorite-pyrochlore phase transition in La2Zr2O7: The role of oxygen to induce local disordered states

被引：61

作者：

Paul, Barnita ^{[1
]}

Singh, Kushal ^{[2
]}

Jaron, Tomasz ^{[3
]}

Roy, Anushree ^{[1
]}

Chowdhury, Anirban ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India

[2] Indian Inst Technol Patna, Dept Mat Sci & Engn, Bihta 801118, Bihar, India

[3] Univ Warsaw, Ctr New Technol, Ul Zwirki & Wigury 93, PL-02089 Warsaw, Poland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 686卷

关键词：

Phase transitions; X-ray diffraction; Oxide materials; Crystal structure; Transmission electron microscopy; YBCO-COATED CONDUCTORS; RAMAN-SPECTROSCOPY; BUFFER LAYERS; CONDUCTIVITY; TRANSFORMATION; DEPENDENCE; CHEMISTRY;

D O I：

10.1016/j.jallcom.2016.05.347

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Structural and functional applications involving La2Zr2O7 exploit the data on fluorite to pyrochlore phase transition, because of the strong dependence on the physical properties of the system with its phase stability. Though studied for decades, the origin of fluorite to pyrochlore phase transition in La2Zr2O7 is still not well understood. In this article, we confirm the presence of a fluorite to pyrochlore phase transition in La2Zr2O7 system in the temperature range 1000-1450 degrees C. The phase transition along with the associated structural properties is investigated with the help La2Zr2O7 samples calcined at different temperatures. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：130 / 136

页数：7

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