物理学报2011，Vol.60Issue(6)：691-696,6.
复合薄膜NiFe2O4-BiFeO3中的磁电耦合
Magnetoelectric coupling in NiFe2O4-BiFeO3 composite films
摘要
Abstract
Multiferroic xNFO-( 1 -x)BFO (x =0.00 0. 10, 0. 15, 0.20, 0.25) composite films are prepared through self-assembling growth on Au/Ti/SiO2/Si substrates by chemical solution deposition (CSD). X-ray diffraction analysis shows that the perovskite BiFeO3 and the spinel structured NiFe2O4 phases are formed and separated. The leakage current density (7) in the film decreases and the remnant polarizations (Mr) increases with the introduction of NFO. The value of J in 0. 25NFO-0. 75BFO film is found to be nearly two orders of magnitude lower than that in the BFO film, and the Mr and the saturation magnetization (Mt) reach maxima, I. E. 2. 3μC/cm2 and 70. 2 kA · m-1 , respectively. Therefore, from the calculation for magnetic moment of NFO we can conjecture that magnetoelectric coupling exists in the composite films.关键词
多铁性复合薄膜/磁电耦合/铁电性/铁磁性Key words
multiferroic composite films/ magnetoelectric coupling/ ferroelectric properties/ magnetic properties引用本文复制引用
顾建军,刘力虎,岂云开,徐芹,张惠敏,孙会元..复合薄膜NiFe2O4-BiFeO3中的磁电耦合[J].物理学报,2011,60(6):691-696,6.基金项目
河北省自然科学基金(批准号:A2009000254)、河北民族师范学院博士基金(批准号:201003)和河北师范大学博士基金(批准号:L2006B10)资助的课题. （批准号:A2009000254）
