Aurivillius结构Bi2MoxW1-xO6铁电功能晶体的生长与性质表征
O782%O73; 本文采用固相反应法探索了Aurivillius结构Bi2 Mox W1-x O6体系的合成条件以及能够形成固溶体的成分范围,探索了Bi2 Mox W1-x O6晶体的助熔剂法生长体系,并对晶体的结构、变温介电性质和电阻率进行了测定和分析.Bi2 Mox W1-x O6体系中Mo的占比x可以在0～1的范围内连续变化,采用固相反应法可以在500～870℃范围内的不同温度合成纯的Bi2MoxW1-xO6铁电相.采用Li2B4O7-Bi2O3(摩尔比2:1)作为助熔剂生长得到了厘米级Bi2WO6单畴晶体,厚度不小于2 mm,最大尺寸则达到了约40 mm.在n(Bi2O3):n(Mo...
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| Published in | 人工晶体学报 Vol. 51; no. 11; pp. 1858 - 1883 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
临沂大学材料科学与工程学院,临沂 276000%中材人工晶体研究院有限公司,北京 100018%山东大学晶体材料国家重点实验室,济南 250100
01.11.2022
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-985X |
| DOI | 10.3969/j.issn.1000-985X.2022.11.007 |
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| Abstract | O782%O73; 本文采用固相反应法探索了Aurivillius结构Bi2 Mox W1-x O6体系的合成条件以及能够形成固溶体的成分范围,探索了Bi2 Mox W1-x O6晶体的助熔剂法生长体系,并对晶体的结构、变温介电性质和电阻率进行了测定和分析.Bi2 Mox W1-x O6体系中Mo的占比x可以在0～1的范围内连续变化,采用固相反应法可以在500～870℃范围内的不同温度合成纯的Bi2MoxW1-xO6铁电相.采用Li2B4O7-Bi2O3(摩尔比2:1)作为助熔剂生长得到了厘米级Bi2WO6单畴晶体,厚度不小于2 mm,最大尺寸则达到了约40 mm.在n(Bi2O3):n(MoO3):n(WO3):n(Li2B4O7)=1:1:1:1(摩尔比)体系中生长得到了厚度约1 mm的Bi2 Mo0.15 W0.85 O6厘米量级单畴晶体,结构解析表明Bi2 Mo0.15 W0.85 O6属于正交晶系,Aba2(No.41)空间群.变温介电性质测试表明,Bi2Mo0.15W0.85O6晶体的介电常数ε33由Bi2WO6晶体的70提高到了102,介电弛豫现象发生的温度由Bi2 WO6晶体的430℃降到了330℃附近.变温电阻率测试表明,Bi2 WO6与Bi2 Mo0.15 W0.85 O6晶体的电阻率均随温度升高而降低,在100℃以下,Bi2 WO6的电阻率高于Bi2 Mo0.15 W0.85 O6晶体,且随温度升高,二者电阻率的差距在逐渐缩小. |
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| AbstractList | O782%O73; 本文采用固相反应法探索了Aurivillius结构Bi2 Mox W1-x O6体系的合成条件以及能够形成固溶体的成分范围,探索了Bi2 Mox W1-x O6晶体的助熔剂法生长体系,并对晶体的结构、变温介电性质和电阻率进行了测定和分析.Bi2 Mox W1-x O6体系中Mo的占比x可以在0～1的范围内连续变化,采用固相反应法可以在500～870℃范围内的不同温度合成纯的Bi2MoxW1-xO6铁电相.采用Li2B4O7-Bi2O3(摩尔比2:1)作为助熔剂生长得到了厘米级Bi2WO6单畴晶体,厚度不小于2 mm,最大尺寸则达到了约40 mm.在n(Bi2O3):n(MoO3):n(WO3):n(Li2B4O7)=1:1:1:1(摩尔比)体系中生长得到了厚度约1 mm的Bi2 Mo0.15 W0.85 O6厘米量级单畴晶体,结构解析表明Bi2 Mo0.15 W0.85 O6属于正交晶系,Aba2(No.41)空间群.变温介电性质测试表明,Bi2Mo0.15W0.85O6晶体的介电常数ε33由Bi2WO6晶体的70提高到了102,介电弛豫现象发生的温度由Bi2 WO6晶体的430℃降到了330℃附近.变温电阻率测试表明,Bi2 WO6与Bi2 Mo0.15 W0.85 O6晶体的电阻率均随温度升高而降低,在100℃以下,Bi2 WO6的电阻率高于Bi2 Mo0.15 W0.85 O6晶体,且随温度升高,二者电阻率的差距在逐渐缩小. |
| Author | 丁小南 赵鹏 高泽亮 田相鑫 刘敬权 |
| AuthorAffiliation | 临沂大学材料科学与工程学院,临沂 276000%中材人工晶体研究院有限公司,北京 100018%山东大学晶体材料国家重点实验室,济南 250100 |
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| Author_FL | TIAN Xiangxin ZHAO Peng GAO Zeliang DING Xiaonan LIU Jingquan |
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| Author_xml | – sequence: 1 fullname: 丁小南 – sequence: 2 fullname: 田相鑫 – sequence: 3 fullname: 赵鹏 – sequence: 4 fullname: 高泽亮 – sequence: 5 fullname: 刘敬权 |
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| DocumentTitle_FL | Growth and Property of Aurivillius Structure Bi2MoxW1-xO6 Series Ferroelectric Functional Single Crystals |
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| Keywords | 铁电晶体 Bi2MoxW1-xO6 晶体结构 助熔剂法 Aurivillius结构 电阻率 介电性质 |
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| Title | Aurivillius结构Bi2MoxW1-xO6铁电功能晶体的生长与性质表征 |
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