New modulated structures induced by electron beam irradiation in SrCrO3 single crystal

被引：1
|
作者：
Xu, Minghui [1 ,2 ]
Cao, Lipeng [1 ]
Wang, Weipeng [1 ]
Ding, Yifan [1 ,2 ]
Shen, Xi [1 ]
Yao, Yuan [1 ]
Jin, Changqing [1 ,2 ]
Yu, Richeng [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China
[3] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2023年 / 172卷
关键词：
Modulated structures; Electron beam irradiation; Transmission electron microscopy; Scanning transmission electron microscopy; Ab initio calculations; TRANSPORT-PROPERTIES; HIGH-PRESSURE; TEMPERATURE;
D O I：
10.1016/j.jpcs.2022.111063
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three new modulated structures induced by controllable electron beam irradiation (EBI) were obtained from SrCrO3 single crystal. The crystal and electronic structures were investigated using aberration-corrected scanning transmission electron microscopy, electron energy loss spectroscopy (EELS) and ab initio calculations. The EELS results revealed that EBI induced ordered oxygen vacancies and generated modulated structures SrCrO2.5 (I4/ mmm), SrCrO2.8 (C2/m) and SrCrO2.67 (C2/m) from pristine SrCrO3 (Pmm). The corresponding structural models were proposed and modified by ab initio calculations. Additionally, the electronic structures of the optimized modulated structures were further investigated.
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页数：6
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