| 复合薄膜NiFe2 O4-BiFeO3 中的磁电耦合 |
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| 引用本文： | 顾建军,刘力虎,岂云开,徐芹,张惠敏,孙会元.复合薄膜NiFe2 O4-BiFeO3 中的磁电耦合[J].物理学报,2011,60(6):67701-067701. |
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| 作者姓名： | 顾建军 刘力虎 岂云开 徐芹 张惠敏 孙会元 |
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| 作者单位： | (1)河北师范大学物理科学与信息工程学院, 石家庄 050016;河北民族师范学院物理系, 承德 067000; (2)河北师范大学物理科学与信息工程学院, 石家庄 050016;河北民族师范学院物理系, 承德 067000;河北省新型薄膜材料重点实验室, 石家庄 050016; (3)河北师范大学物理科学与信息工程学院, 石家庄 050016;河北省新型薄膜材料重点实验室, 石家庄 050016 |
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| 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. |
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| 摘 要： | 采用化学溶液沉积法(CSD)在Au/Ti/SiO2/Si衬底上通过自组装生长制备了BiFeO3-NiFe2O4 (BFO-NFO)多铁性复合薄膜.X射线衍射图谱(XRD)显示形成了分离的钙钛矿结构的铁电相BFO和尖晶石结构的铁磁相NFO. NFO的引入导致复合薄膜的泄漏电流减小,剩余极化强度增加.相比于纯BFO薄膜,0.25NFO-0.75BFO样品泄漏电流下降了约两个数量级,剩余极化强度( M
关键词：
多铁性复合薄膜
磁电耦合
铁电性
铁磁性
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| 关 键 词： | 多铁性复合薄膜 磁电耦合 铁电性 铁磁性 |
| 收稿时间： | 1/3/2011 12:00:00 AM |
Magnetoelectric coupling in NiFe2 O4-BiFeO3 composite films |
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| Gu Jian-Jun,Liu Li-Hu,Qi Yun-Kai,Xu Qin,Zhang Hui-Min,Sun Hui-Yuan.Magnetoelectric coupling in NiFe2 O4-BiFeO3 composite films[J].Acta Physica Sinica,2011,60(6):67701-067701. |
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| Authors: | Gu Jian-Jun Liu Li-Hu Qi Yun-Kai Xu Qin Zhang Hui-Min Sun Hui-Yuan |
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| Institution: | College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China; Key Laboratory of Advanced Films of Hebei Province, Shijiazhuang 050016, China;College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China; Key Laboratory of Advanced Films of Hebei Province, Shijiazhuang 050016, China;College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China; Department of Physics, Hebei Normal University for Nationalities, Chengde 067000, China;College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China; Key Laboratory of Advanced Films of Hebei Province, Shijiazhuang 050016, China;College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China; Key Laboratory of Advanced Films of Hebei Province, Shijiazhuang 050016, China;College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China; Key Laboratory of Advanced Films of Hebei Province, Shijiazhuang 050016, China |
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| 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 (J) in the film decreases and the remnant polarizations (M r) 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 M r and the saturation magnetization ( M s) 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. |
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| Keywords: | multiferroic composite films magnetoelectric coupling ferroelectric properties magnetic properties |
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