摘要
由溶胶-凝胶法制备出锰酸盐La0.7Sr0.3MnO3粉料,经1300K热压并在1573K高温下烧结成块材,并与Pb(Zr,Ti)O3胶合形成弹性耦合双层膜。相较于涂敷膜(tape casting)复合样品,该双层膜显示出更为优良的ME耦合效应。横向耦合要比纵向耦合更为强烈,并当外加磁场为150 Oe时ME电压系数达到峰值。分析表明由磁场和频率变化导致的ME系数变化的实验值与理论值符合的很好。
Manganite La0.7Sr0.3MnO3 powder was synthesized by sol- gel method. Then it was hot - pressed at 1300K and sintered at 1573K for 10 h to get bulks. Gluing La0.7Sr0.3MnO3 chip with Pb（Zr,- Ti） O3, ME bilayers with elastic coupling were obtained. The bilayers exhibit superior ME coupling compared to thick film composites prepared by tape casting process. The transverse coupling is stronger than the longitudinal interactions and a maximum ME voltage coefficient is achieved under an applied field H = 150 Oe. There is excellent agreement between theory and the ME data measurement.
出处
《功能材料与器件学报》
EI
CAS
CSCD
北大核心
2006年第4期289-293,共5页
Journal of Functional Materials and Devices
基金
国家自然科学基金(No.20473038)
江苏省高技术计划基金(No.BG-2005401)
美国国家自然科学基金(No.DMR-0302254
USA)的支持
关键词
ME效应
双层膜
锰钙钛矿
锆钛酸铅
ME effect
bilayer
manganese perovskite
lead zirconate titanate
