Ho/Er在BaTiO3陶瓷中的固溶度和缺陷化学

doi:10.16039/j.cnki.cn22-1249.2019.05.013

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摘要

采用混合氧化物方法制备(Ba_1-xHo_x)(Ti_1-xEr_x)O₃（简称BHTE）陶瓷。通过X射线衍射（XRD）、电子顺磁共振（EPR）和光致发光技术研究了BHTE陶瓷的晶体结构、固溶度和缺陷化学。结果表明：Ho³⁺/Er³⁺离子在BaTiO₃晶格中的固溶度仅为x = 0.01，陶瓷为四方钙钛矿结构。x ≥ 0.02时，有少量的Er₂O₃析出，并形成Ba₆Ho₂Ti₄O₁₇杂相。讨论了BHTE陶瓷的位占据、固溶形成和缺陷化学。

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	苏雅丽
	路大勇

关键词: 钬铒掺杂钛酸钡固溶度缺陷化学电子顺磁共振光致发光

Abstract:

(Ba_1-xHo_x)(Ti_1-xEr_x)O₃ceramics (abbreviated BHTE) were prepared using the mixed-oxides route. The crystal structure, solid solubility, and defect chemistry of BHTE were investigated using X-ray diffraction (XRD), electron paramagnetic resonance (EPR) and photoluminescence. The results indicated that the solubility limit of Ho³⁺/Er³⁺ ions in the BaTiO₃ lattice is x = 0.01 and BHTE ceramics has a tetragonal perovskite structure. When x is more than 0.02, a small amount of Er₂O₃ separates out in BHTE, accompanied by Ba₆Ho₂Ti₄O₁₇ phase. The site occupation, solid solution formation, and defect chemistry are discussed.

Key words: Ho and Er co-doped BaTiO₃ solid solubility defect chemistry electron paramagnetic resonance photoluminescence

出版日期: 2019-05-25 发布日期: 2019-05-25 整期出版日期: 2019-05-25

O614.23

引用本文:

苏雅丽, 路大勇. Ho/Er在BaTiO₃陶瓷中的固溶度和缺陷化学 [J]. 吉林化工学院学报, 2019, 36(5): 49-53.
SU Yali, LU Dayong. Dielectric Properties and Exploration of Self-compensation Mode of Ho/Er in BaTiO₃ Ceramics . Journal of Jilin Institute of Chemical Technology, 2019, 36(5): 49-53.

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https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2019.05.013 或 https://xuebao.jlict.edu.cn/CN/Y2019/V36/I5/49

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