| 外电场对层状复合材料磁电效应的影响 |
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| 引用本文： | 丁建明,仲崇贵.外电场对层状复合材料磁电效应的影响[J].苏州大学学报(医学版),2007,23(2):65-68. |
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| 作者姓名： | 丁建明 仲崇贵 |
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| 作者单位： | [1]苏州大学物理科学与技术学院,江苏苏州215006 [2]南通大学理学院,江苏南通226007 |
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| 基金项目： | 江苏省自然科学基金;江苏省高校自然科学基金 |
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| 摘 要： | 以Landau唯象热力学理论为基础，求得了与电场相关的压电相状态方程，结合磁致伸缩相状态方程和一定的边界条件，研究了外电场对磁电电压系数的影响．结果显示：用来极化铁电层的外电场对磁电作用有很大的影响，随着外电场的增大，横向和纵向的磁电电压系数将明显减小，从而有效分析了磁电电压系数实验值小于理论值的可能原因．
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| 关 键 词： | 磁电复合材料 压电方程 磁电电压系数 |
| 文章编号： | 1000-2073(2007)02-0065-04 |
| 收稿时间： | 07 26 2006 12:00AM |
| 修稿时间： | 2006年7月26日 |
Impact of the external electric field on the magnetoelectric effects of layered magnetoelectric composites |
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| Ding Jianming,Zhong Chonggui.Impact of the external electric field on the magnetoelectric effects of layered magnetoelectric composites[J].Journal of Suzhou University(Natural Science),2007,23(2):65-68. |
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| Authors: | Ding Jianming Zhong Chonggui |
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| Institution: | 1. School of Physical Science and Technology, Suzhou Univ,, Suzhou 215006, China; 2. School of Science, Nantong Univ. , Nantong 226007, China |
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| Abstract: | Basing on the Landau phenomenological thermodynamic theory, we get the piezoelectric constitutive equations depending on the electric field. After combining the boundary conditions and magnetostrictive constitutive equations,we investigate the impact of the electric field on the magnetoelectric voltage coefficients. It is demonstrated that the external electric field will make great effects on magnetoelectric coupling. Both the trans- verse and longitudinal magnetoelec.tric voltage coefficients will decrease along with increasing the strength of electric field used to polarize the ferroelectric layer. Our work availably analyses the possible reason for magnetoelectric voltage coefficients of the experimental data being lower than that of the theoretical values. |
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| Keywords: | magnetoelectric composites piezoelectric constitutive equation magnetoelectric voltage coefficients |
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