| 非化学计量和掺杂对(Na_(1/2)Bi_(1/2))_(0.92)Ba_(0.08)TiO_3陶瓷电性能的影响 |
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| 引用本文： | 初宝进,李国荣,殷庆瑞,张望重,陈大任.非化学计量和掺杂对(Na_(1/2)Bi_(1/2))_(0.92)Ba_(0.08)TiO_3陶瓷电性能的影响[J].物理学报,2001,50(10). |
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| 作者姓名： | 初宝进 李国荣 殷庆瑞 张望重 陈大任 |
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| 摘 要： | 研究了非化学计量和掺杂对无铅压电陶瓷 (Na1 2 Bi1 2 ) 0 .92 Ba0 .0 8TiO3的压电性能及去极化温度的影响 .研究发现A位非化学计量可以提高陶瓷的压电性能 ;B位掺杂对材料电学性能的影响规律类似于Pb(Ti,Zr)O3系压电陶瓷的相关规律 ;由于非化学计量和掺杂会影响到A位离子对B位离子与氧离子形成的BO6 八面体的耦合作用 ,影响到畴的稳定性 ,从而影响到 (Na1 2 Bi1 2 ) 0 .92 Ba0 .0 8TiO3陶瓷的去极化温度 ;所研究的陶瓷样品的去极化温度越低 ,压电系数越高 .
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| 关 键 词： | 无铅压电陶瓷 非化学计量 掺杂 电性能 |
INFLUENCE OF NONSTOICHIOMETRY AND DOPING ON ELECTRICAL PROPERTIES OF (Na_(1/2) Bi_(1/2))_(0.92)Ba_(0.08) TiO_3 CERAMICS |
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| CHU BAO\|JIN\ LI GUO\|RONG\ YIN QING\|RUI\ ZHANG WANG\|ZHONG,CHEN DA\|REN.INFLUENCE OF NONSTOICHIOMETRY AND DOPING ON ELECTRICAL PROPERTIES OF (Na_(1/2) Bi_(1/2))_(0.92)Ba_(0.08) TiO_3 CERAMICS[J].Acta Physica Sinica,2001,50(10). |
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| Authors: | CHU BAO\|JIN\ LI GUO\|RONG\ YIN QING\|RUI\ ZHANG WANG\|ZHONG CHEN DA\|REN |
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| Abstract: | Influence of nonstoichiometry and doping on piezoelectric properties and depolarization temperature of lead\|free piezoelectric ceramics (Na 1/2 Bi 1/2 ) 0.92 Ba 0.08 TiO 3 \ was studied. Nonstoichiometry of A site can improve their piezoelectric properties. Doping in B site has great influence on electric properties, which is similar to the corresponding rules of Pb(Ti,Zr)O 3 based ceramics. Variation of coupling effect of A site cation on B O 6 octahedra as results of nonstoichiometry, and the doping in NBBT ceramics leads to variations of the depolarization temperature. The higher the depolarization temperature of Na 1/2 Bi 1/2 TiO 3 BaTiO 3 ceramics studied,the lower the piezoelectric constant. |
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| Keywords: | lead free piezoelectric ceramics nonstoichiometry doping electrical properties |
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