| Ba(Ti0.91Zr0.09)O3陶瓷介电弛豫现象的研究 |
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| 引用本文： | 宋天秀,丁士华,陈涛,张红霞,杨秀玲. Ba(Ti0.91Zr0.09)O3陶瓷介电弛豫现象的研究[J]. 电子元件与材料, 2007, 26(11): 22-25 |
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| 作者姓名： | 宋天秀 丁士华 陈涛 张红霞 杨秀玲 |
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| 作者单位： | 西华大学,材料科学与工程学院,四川,成都,610039;西华大学,材料科学与工程学院,四川,成都,610039;西华大学,材料科学与工程学院,四川,成都,610039;西华大学,材料科学与工程学院,四川,成都,610039;西华大学,材料科学与工程学院,四川,成都,610039 |
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| 基金项目： | 西华大学校科研和教改项目 |
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| 摘 要： | 采用固相反应法制备了CuO-BaO掺杂的Ba(Ti0.91Zr0.09)O3陶瓷,研究了掺杂量对陶瓷介电性能的影响。结果表明:随着CuO-BaO混合物掺杂量从0.3%增加到1.0%时,Ba(Ti0.91Zr0.09)O3陶瓷的斜方-四方相变峰出现介电弛豫现象并且弛豫程度Δtm′从2.9增加到5.5,相变温度从+5℃移动到–21℃,室温εr从2841增加到3372,并且高于四方-立方相变点的εr。电滞回线变窄,矫顽场变小,呈现典型弛豫型铁电体的特征。
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| 关 键 词： | 无机非金属材料 CuO-BaO混合物 Ba(Ti0.91Zr0.09)O3陶瓷 介电弛豫 相变弥散 |
| 文章编号： | 1001-2028（2007）11-0022-04 |
| 修稿时间： | 2007-08-21 |
Study on dielectric relaxation of Ba(Ti0.91Zr0.09)O3 ceramics |
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| SONG Tian-xiu,DING Shi-hua,CHEN Tao,ZHANG Hong-xia,YANG Xiu-ling. Study on dielectric relaxation of Ba(Ti0.91Zr0.09)O3 ceramics[J]. Electronic Components & Materials, 2007, 26(11): 22-25 |
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| Authors: | SONG Tian-xiu DING Shi-hua CHEN Tao ZHANG Hong-xia YANG Xiu-ling |
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| Abstract: | CuO-BaO mixture doped Ba(Ti0.91Zr0.09)O3 ceramic was prepared by solid phase reaction. The effects of CuO-BaO mixture doped amounts on dielectric properties of Ba(Ti0.91Zr0.09)O3 ceramics were investigated. The results show that with increasing of CuO-BaO mixture doped amount from 0.3% to 1.0%, dielectric relaxation is found at orthorhombic-tetragonal phase transition point, the extent of dielectric relaxation Δ tm′ increases from 2.9 to 5.5, the temperature of orthorhombic-tetragonal phase shifts from +5 ℃ to –21℃. At room temperature, εr increases from 2 841 to 3 372 , and higher thanεr at Curie point. The polarization hysteresis loop become narrow, coercive field become small, and exhibit a typical relaxor ferroelectric behavior. |
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| Keywords: | non-metallic inorganic material CuO-BaO mixture Ba (Ti0.91Zr0.09)O3 ceramics dielectric relaxation diffused phase transition |
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