Ba2SrCe2TbO9陶瓷的Pawley精修及缺陷化学研究
苏雅丽1,2 ,于新宇3 ,路大勇1 ,刘巧丽1*
1.吉林化工学院 材料科学与工程研究中心,吉林 吉林132022;2.吉林大学 化学学院,吉林 长春 130021;3.工业和信息化部电子第五研究所,广东 广州 511370
awley refinement and defect chemistry of Ba2SrCe2TbO9 ceramic
SU Yali1,2 , YU Xinyu3 , LU Dayong1 , LIU Qiaoli1*
摘要
采用固相反应法制备了Ba2SrCe2TbO9(简称B2SC2T)陶瓷。通过X射线衍射(XRD)、电子顺磁共振(EPR)和X射线光电子能谱(XPS)技术研究了B2SC2T陶瓷的晶体结构和缺陷化学。XRD结果表明,B2SC2T陶瓷具有三斜钙钛矿结构,ESR和XPS证明Ce以Ce4+形式存在,Tb以Tb3+/Tb4+的混合价态形式存在。
关键词:
Pawley精修
缺陷化学
电子顺磁共振
X射线光电子能谱
Abstract:
Ba2SrCe2TbO9 ceramic (abbreviated B2SC2T) was prepared using solid-state reaction method. The crystal structure and defect chemistry of B2SC2T were investigated using X-ray diffraction (XRD), electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS). XRD results indicate that B2SC2T ceramic has a triclinic perovskite structure. EPR and XPS show that Ce ions exist as Ce4+, and Tb ions coexist in the mixed valence states of Tb3+ and Tb4+.
Key words:
Pawley refinement
defect chemistry
electron paramagnetic resonance
X-ray photoelectron spectroscopy
出版日期: 2022-03-25
发布日期: 2022-03-25
整期出版日期: 2022-03-25
引用本文:
苏雅丽, 于新宇, 路大勇, 刘巧丽.
Ba2SrCe2TbO9陶瓷的Pawley精修及缺陷化学研究
[J]. 吉林化工学院学报, 2022, 39(3): 30-33.
SU Yali, YU Xinyu, LU Dayong, LIU Qiaoli.
awley refinement and defect chemistry of Ba2SrCe2TbO9 ceramic
. Journal of Jilin Institute of Chemical Technology, 2022, 39(3): 30-33.
链接本文:
http://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2022.03.007
或
http://xuebao.jlict.edu.cn/CN/Y2022/V39/I3/30
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