| 钛酸锶铋介电陶瓷中复合缺陷的正电子湮没研究 |
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| 引用本文： | 陈昂,智宇.钛酸锶铋介电陶瓷中复合缺陷的正电子湮没研究[J].无机材料学报,1992,7(4):423-428. |
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| 作者姓名： | 陈昂 智宇 |
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| 作者单位： | 浙江大学物理系
(陈昂)，浙江大学材科系
(智宇)，华中理工大学固体电子学系
(张绪礼)，华中理工大学固体电子学系(王筱珍) |
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| 摘 要： |
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| 关 键 词： | 介电陶瓷 正电子湮没 钛酸锶铋 |
Positron Annihilation Study of Complex-Defect in Sr-Bi-Ti-O Dielectric Ceramics |
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| Chen Ang Zhi Yu.Positron Annihilation Study of Complex-Defect in Sr-Bi-Ti-O Dielectric Ceramics[J].Journal of Inorganic Materials,1992,7(4):423-428. |
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| Authors: | Chen Ang Zhi Yu |
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| Abstract: | The positron annihilation lifetime spectra of Sr-Bi-Ti-O dielectric ceramics were measured.The positron parameters and defect structure in this ceramic system were discussed based onthe positron annihilation theory.In the solid solution region,the results show that there onlyexist strontium vacancies when bismuth content is small;and the complex-defects appear in theform of V_(Sr)]_2 andVsr Bi_(sr)] as bismuth content is higher.On the Other hand,the solubilityof bismuth substitution for strontium in SrTiO_3 ceramics can be sensitively detected by thepositron annihilation technique. |
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| Keywords: | Dielectric ceramics Positron annihilation technique Complex-defect |
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