| 高居里温度铁电单晶PIN-PT的机电性能 |
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| 引用本文： | 刘曼曼,汪跃群,熊俊杰,张文杰,孔舒燕,杨晓明,王祖建,龙西法,何超.高居里温度铁电单晶PIN-PT的机电性能[J].人工晶体学报,2022,51(4):579-586. |
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| 作者姓名： | 刘曼曼 汪跃群 熊俊杰 张文杰 孔舒燕 杨晓明 王祖建 龙西法 何超 |
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| 作者单位： | 1.中国科学院福建物质结构研究所,福州 350002; 2.中国船舶集团第七一五研究所,杭州 310023 |
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| 基金项目： | 中国科学院重点部署项目(ZDRW-CN-2021-3);福建省工业引导项目(2020H0038) |
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| 摘 要： | 弛豫铁电单晶Pb(In1/2Nb1/2)O3-PbTiO3(PIN-PT)相较于常用的Pb(Mg1/3Nb2/3)O3-PbTiO3(PMN-PT)具有更高的居里温度,在高稳定性、高性能的传感器、换能器方面具有应用前景。本工作采用谐振法研究了001]方向极化的0.66PIN-0.34PT铁电单晶的全矩阵机电性能参数。0.66PIN-0.34PT 单晶的三方-四方相变温度(TRT)约为160 ℃,居里温度(TC)约为260 ℃,室温压电系数d33、d31、d15分别为1 340 pC/N、-780 pC/N、321 pC/N,介电常数εT33、εS33、εT11、εS11分别为2 700、905、2 210、1 927,机电耦合系数 k33、k31、k15、kt分别为 87%、58%、38%、61%。其纵向压电常数(d33)和纵向机电耦合系数(k33)小于 PMN-PT 单晶,但是横向压电性能(d31)和剪切压电性能(d15)都略高于PMN-PT单晶。另外,研究了机电耦合性能随温度的变化趋势,发现0.66PIN-0.34PT单晶在150 ℃以下有较好的温度稳定性。
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| 关 键 词： | PIN-PT 弛豫铁电单晶 全矩阵参数 压电性能 机电性能 传感器 |
| 收稿时间： | 2022-02-16 |
Electromechanical Properties of Ferroelectric Single Crystal PIN-PT with High Curie Temperature |
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| LIU Manman,WANG Yuequn,XIONG Junjie,ZHANG Wenjie,KONG Shuyan,YANG Xiaoming,WANG Zujian,LONG Xifa,HE Chao.Electromechanical Properties of Ferroelectric Single Crystal PIN-PT with High Curie Temperature[J].Journal of Synthetic Crystals,2022,51(4):579-586. |
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| Authors: | LIU Manman WANG Yuequn XIONG Junjie ZHANG Wenjie KONG Shuyan YANG Xiaoming WANG Zujian LONG Xifa HE Chao |
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| Affiliation: | 1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou 350002, China; 2. Hangzhou Applied Acoustics Research Institute, Hangzhou 310023, China |
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| Abstract: | Relaxor ferroelectric single crystal Pb(In1/2Nb1/2)O3-PbTiO3 (PIN-PT) has a higher Curie temperature than Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT), which has a prospect in the application of sensors and transducers requiring high stability and high performance. In this work, the full matrix mechanical and electrical properties of 001]-poled 0.66PIN-0.34PT ferroelectric single crystal were studied by resonance method. The rhombohedral-tetragonal transformation temperature (TRT) and Curie temperature (TC) of 0.66PIN-0.34PT single crystal are 160 ℃ and 260 ℃, respectively. The room temperature piezoelectric coefficients d33, d31 and d15 of 0.66PIN-0.34PT ferroelectric single crystal are 1 340 pC/N, -780 pC/N and 321 pC/N, respectively. The dielectric constants εT33, εS33, εT11, εS11 are 2 700, 905, 2 210, 1 927, respectively. The electromechanical coupling coefficients k33, k31, k15, kt are 87%, 58%, 38%, 61%, respectively. The value of piezoelectric constant (d33) and electromechanical coupling coefficient (k33) of 0.66PIN-0.34PT single crystal are smaller than those of PMN-PT single crystal, but the transverse piezoelectric properties (d31) and shear piezoelectric properties (d15) are slightly higher than those of PMN-PT single crystal. In addition, the trend of variation in electromechanical coupling performance was studied, and it is found that 0.66PIN-0.34PT single crystal has good temperature stability below 150 ℃. |
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| Keywords: | PIN-PT relaxor ferroelectric single crystal full matrix parameter piezoelectric property electromechanical property sensor |
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