Effect of Atomic Oxygen and Electron Irradiation on the Electronic Structure of KTiOPO4 Crystal

被引：5
|
作者：
Liu, Jian [1 ,2 ,3 ]
Lu, Yan [1 ,2 ,3 ]
Hao, Junying [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[3] Qingdao Ctr Resource Chem & New Mat, Qingdao 266000, Peoples R China
来源：
CRYSTAL RESEARCH AND TECHNOLOGY | 2021年 / 56卷 / 04期
基金：
中国国家自然科学基金;
关键词：
atomic oxygen; electronic structures; KTP crystals; space irradiation; XPS;
D O I：
10.1002/crat.202000175
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
KTiOPO4 (KTP) crystals are prepared by the top-seeded solution growth method. Effects of space irradiation on KTP crystal structure have been investigated using Space Tribology in-situ Analysis System: KTP crystal (001) surfaces were irradiated by atomic oxygen (AO) and electron (EL), and the electronic structure was analyzed using X-ray photoelectron spectroscopy (XPS). The AO has strong oxidizing property which results in decreases in the intensity of C 1s peak. The content of P increases after AO/EL irradiation, while the content of Ti decreases after AO irradiation. The reduced Delta BE (OP) shows stronger ionicity of PO bonds after AO/EL irradiation compared with pristine KTP crystal. The deconvolution of O 1s photoemission line reveals that peaks at 530.8-531.0 and 530.1 eV are assigned to OP and OTi bonds, respectively. Additionally, variations in the trend of OP bond and OTi bond contents are resembled to that of P and Ti after AO/EL irradiation.
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页数：4
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