High-pressure induced phase transitions of Y2O3 and Y2O3:Eu3+

被引：92

作者：

Wang, Lin ^{[1
]}

Pan, Yuexiao ^{[2
]}

Ding, Yang ^{[1
]}

Yang, Wenge ^{[3
]}

Mao, Wendy L. ^{[4
,5
]}

Sinogeikin, Stanislav V. ^{[3
]}

Meng, Yue ^{[3
]}

Shen, Guoyin ^{[1
,3
]}

Mao, Ho-kwang ^{[1
,3
,6
]}

机构：

[1] Carnegie Inst Sci, HPSynC, Argonne, IL 60439 USA

[2] S China Univ Technol, Coll Chem, Guangzhou 510641, Peoples R China

[3] Carnegie Inst Sci, HPCAT, Argonne, IL 60439 USA

[4] Stanford Univ, Stanford, CA 94305 USA

[5] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA

[6] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

关键词：

europium; high-pressure solid-state phase transformations; photoluminescence; Raman spectra; X-ray diffraction; yttrium compounds; X-RAY-DIFFRACTION; TRANSFORMATION; SESQUIOXIDES;

D O I：

10.1063/1.3082082

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated high-pressure induced phase transitions in Y2O3 and Eu-doped Y2O3 (Y2O:Eu3+) using angular dispersive synchrotron x-ray diffraction, Raman spectroscopy, and photoluminescence (PL). With increasing pressure, we observed a series of phase transformations in Y2O3:Eu3+, which followed a structure sequence of cubic -> monoclinic -> hexagonal, while Y2O3 followed a sequence of cubic -> hexagonal. During decompression, both hexagonal structured Y2O3 and Y2O3:Eu3+ transformed into monoclinic phases which were quenchable back to ambient pressure. Raman and PL measurements shed additional light on the different phase transition behavior in these two samples.

引用

页数：3

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