物理学报2012，Vol.61Issue(6)：421-427,7.
异质界面对Ca（Mg_（1/3）Nb_（2/3））O_3/CaTiO_3叠层薄膜结构和介电性能的影响
Effects of heterogeneous interfaces on microstructure and dielectric properties of Ca（Mg_（1/3）Nb_（2/3））O_3/CaTiO_3 multilayered thin films
摘要
Abstract
The effects of heterogeneous interfaces on the microstructure,the morphology and the dielectric properties of Ca（Mg_（1/3）Nb_（2/3））O_3/CaTiO_3（CMN/CT） multilayered（ML） thin film prepared in the layer-by-layer mode with a certain thickness are investigated.According to the experimental results,an equivalent circuit of CMN/CT ML thin film is simulated,and the theoretical formulae of the dielectric constant and loss of thin film are established.The results indicate that CMN/CT ML thin film,in which CT and CMN phases can exist independently,possesses a pure orthorhombic perovskite structure,dense smooth surfaces and intermediate layers at the heterogeneous interfaces,and that the dielectric constant increases and the dielectric loss decreases with the increase in the number of heterogeneous interfaces,and reducing the thickness of the interfacial transition layer is useful to improve the dielectric properties of CMN/CT multilayered thin film.关键词
异质界面/CMN/CT叠层薄膜/介电性能/等效电路Key words
heterogeneous interface/CMN/CT multilayered thin films/dielectric properties/equivalent circuit分类
数理科学引用本文复制引用
周静,刘存金,李儒,陈文..异质界面对Ca（Mg_（1/3）Nb_（2/3））O_3/CaTiO_3叠层薄膜结构和介电性能的影响[J].物理学报,2012,61(6):421-427,7.基金项目
国家自然科学基金重点项目 （）
国家自然科学基金 （）
教育部科学技术研究重大项目 （）
教育部新世纪优秀人才支持计划 （）
中央高校基本科研业务费专项资金（批准号：2010-Ⅱ-009）资助的课题 （）
