Sr1-xCaxBi2Ta2O9 Piezoelectric Ceramics with High Mechanical Quality Factor
Sr1-xCaxBi2Ta2O9 Piezoelectric Ceramics with High Mechanical Quality Factor
复制标题
具有高机械品质因数的 Sr1-xCaxBi2Ta2O9 压电陶瓷
DOI：
10.1143/jjap.40.5719
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发表时间：
2001
影响因子：
1.5
通讯作者：
K. Sakata
中科院分区：
文献类型：
--
作者：
K. Shibata;K. Shoji;K. Sakata
研究了Sr_（1-x）Ca_xBi_2 Ta_2 O_9（x=0-1）陶瓷的介电、铁电和压电特性。通过常规陶瓷技术在1260°C至1340°C下2小时制备样品。随着x的增加，样品的居里温度从324°C逐渐升高到896°C。x=0.75的样品的矫顽场Ec约为16 MV/m，Ec值约为x=0时的3倍。在x=0.75时，获得机械品质因数Qm的最大值，约为11000。
The dielectric, ferroelectric and piezoelectric characteristics of Sr1-xCaxBi2Ta2O9 (x=0–1) ceramics were examined. The samples were prepared by a conventional ceramic technique at 1260°C to 1340°C for 2 h. The Curie temperature of samples gradually rose from 324°C to 896°C when x was increased. The coercive field Ec of the sample with x=0.75 was approximately 16 MV/m, and the value of Ec was about 3 times that of x=0. In the x=0.75, the maximum value of the mechanical quality factor Qm was obtained, approximately 11000.