| Y掺杂Ba0.90 Sr0.08 Ca0.02 TiO3固溶体纳米晶粒尺寸对其晶体结构的影响 |
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| 引用本文： | 李东升,吴淑荣,熊为淼,王文亮,杨文选. Y掺杂Ba0.90 Sr0.08 Ca0.02 TiO3固溶体纳米晶粒尺寸对其晶体结构的影响[J]. 无机化学学报, 2000, 16(3) |
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| 作者姓名： | 李东升 吴淑荣 熊为淼 王文亮 杨文选 |
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| 作者单位： | 1. 延安大学化学系,化学反应工程省级重点实验室,延安,716000
2. 西北大学化学系,西安,710069 |
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| 基金项目： | 陕西省教委重点及专项科研基金，（No．97JZK14，No．99JK106）。 |
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| 摘 要： | 随着电子陶瓷材料向精细、微型、多功能化的方向发展，陶瓷用的粉体晶粒尺寸对物性影响的研究显得越来越重要。钡系钙钛矿结构铁电材料是应用极为广泛的电子陶瓷材料，其铁电性与晶粒尺寸密切相关，尤其是达到纳米级时，可使材料性质发生奇异变化。迄今人们仅对纯ＢａＴｉＯ３超微细粒子的晶粒尺寸对铁电相变的影响进行了研究［１～３］，对稀土钇掺杂Ｂａ（１－ｘ－ｙ）ＳｒｘＣａｙＴｉＯ３固溶体纳米晶的相关研究报道尚少，而铁电尺寸效应对这类电子功能材料的研究、开发起着关键作用。因此，开展这方面的研究具有重要的学术价值和实际意…
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| 关 键 词： | Ba_(0.90)Sr_(0.08)Ca_(0.02)TiO_3固溶体 纳米晶粒尺寸 钇掺杂 晶体结构 |
Influence of Nanocrystalline Size of Ba0.90Sr0.08 Ca0.02TiO3 Solid Solution Doped with Yttrium on Its Crystal Structure |
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| LI Dong-Sheng,WU Shu-Rong,XIONG Wei-Miao,WANG Wen-Liang,YANG Wen-Xuan. Influence of Nanocrystalline Size of Ba0.90Sr0.08 Ca0.02TiO3 Solid Solution Doped with Yttrium on Its Crystal Structure[J]. Chinese Journal of Inorganic Chemistry, 2000, 16(3) |
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| Authors: | LI Dong-Sheng WU Shu-Rong XIONG Wei-Miao WANG Wen-Liang YANG Wen-Xuan |
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| Abstract: | The title nanocrystalline powders were prepared by sol-gel method, the influences of grain size on crystal structure were investigated by XRD and DSC techniques. The experiment results show that the tetragonal ferroelectric phase content of the powders and the Curie temperature Tc are increased with the increase of grain size. When the grain size is less than 34. 7nm, crystal structure of the particle changes into cubic paraelectric phase and the transition of ferro-paraelectric phase disappears as well. |
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| Keywords: | Ba_(0.90)Sr_(0.08)Ca_(0.02)TiO_3 solid solution nanocrystalline size doped with yttrium crystal structure |
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