Pressure-induced phase transition of Lu2Ti2O7 and Lu1.5Ce0.5Ti2O7+x pyrochlores - 成果

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Pressure-induced phase transition of Lu₂Ti₂O₇ and Lu_1.5Ce_0.5Ti₂O_7+x pyrochlores

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作者信息关键词期刊信息基础信息归属信息摘要

成果类型：

期刊论文

作者：

Xu, Min;Niu, Jingjing;Wu, Guanfeng;Liao, Qian;Tan, Xi;...

通讯作者：

Xia, Y

作者机构：

[Tan, Xi; Xia, Yue; Xu, Min; Wu, Guanfeng; Liao, Qian; Xia, Y] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.

[Tan, Xi; Xia, Yue; Xu, Min; Wu, Guanfeng; Liao, Qian; Xia, Y; Liu, Longcheng] Univ South China, R&D & Modeling Ctr Treatment & Disposal & Modeling, Hengyang 421001, Peoples R China.

[Niu, Jingjing] Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Sci Resou, Beijing 100101, Peoples R China.

[Xia, Yue; Li, Yuhong; Xia, Y; Yang, Dongyan] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China.

[Liu, Longcheng] China Inst Atom Energy, Beijing 102413, Peoples R China.

通讯机构：

[Xia, Y ] U

Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.

Univ South China, R&D & Modeling Ctr Treatment & Disposal & Modeling, Hengyang 421001, Peoples R China.

Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China.

语种：

英文

关键词：

ceramic;crystallographic structure;defects;phase transformation

期刊：

JOURNAL OF PHYSICS-CONDENSED MATTER

ISSN：

0953-8984

年：

2024

卷：

期：

页码：

165402

DOI：

10.1088/1361-648X/ad1d1e

基金类别：

University of South China (USC) [21A0280]; Research Foundation of Education Bureau of Hunan Province [210XQD007]; PhD Start-up Foundation of University of South China (USC)

机构署名：

本校为第一且通讯机构

院系归属：

核科学技术学院

摘要：

This study utilizes both experimental and computational approaches to investigate the performance of Lu(2)Ti(2)O(7)(LTO) and Lu(1.5)Ce(0.5)Ti(2)O(7+x)(LCTO) pyrochlores under high pressure. The structural changes of LTO and LCTO pyrochlores were characterized usingin-situsynchrotron x-ray diffraction (SXRD) andin-situRaman spectroscopy at pressures up to 44.6 GPa. The kinks inP-aandP-Vcurves at around 5 GPa are mainly attributed to the interaction between the pressure medium and the isostructural changes. The onset pressures for transitioning from the cubic pyrochlore phase (Fd-3 m) to the mon...

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Pressure-induced phase transition of Lu₂Ti₂O₇ and Lu_1.5Ce_0.5Ti₂O_7+x pyrochlores

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