Comparison of room-temperature multiferroics in Bi_4Fe_2TiO_(12) film and bulk

作     者：Jun Lu Lijie Qiao Wuyang Chu 

作者机构：Department of Materials Physics School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China 

出 版 物：《Journal of University of Science and Technology Beijing》 (北京科技大学学报（英文版）)

年 卷 期：2008年第15卷第6期

页      面：782-785页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：multiferroic film X-ray photoelectron spectroscopy (XPS) oxygen vacancy magnetism dielectric property 

摘      要：It was reported that both dielectricity and magnetism at room temperature were appreciably improved in Bi4Fe2TiO12 film compared with Bi4Fe2TiO12 bulk. X-ray diffraction profiles reveal similar crystalline nature and random orientation of the two, but X-ray photoelectron spectroscopy （XPS） experiments indicate that it is 1.4 eV lower binding energy of core-state Ols in the film relative to that of the bulk, so the improvement of multiferroics in the film is attributed to oxygen vacancies and high fraction of interface. The results have promising applications in multifunctional integrated devices.