Enhanced ferroelectricity and ferromagnetism in Bi0.9Ba0.1FeO3/La2/3Sr1/3MnO3 heterostructure grown by pulsed laser deposition

doi:10.1088/1674-1056/23/11/117703

›› 2014, Vol. 23 ›› Issue (11): 117703-117703.doi: 10.1088/1674-1056/23/11/117703

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Enhanced ferroelectricity and ferromagnetism in Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructure grown by pulsed laser deposition

温晓莉^a, 陈钊^b, 林鑫^a, 牛利伟^b, 段萌萌^b, 张云婕^b, 董祥雷^b, 陈长乐^b

a State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;
b Key Laboratory of Space Applied Physics and Chemistry of Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072, China

收稿日期:2014-01-26 修回日期:2014-03-27 出版日期:2014-11-15 发布日期:2014-11-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61078057), the Natural Science Foundation of Shannxi Province, China (Grant No. 2011GM6013), the Foundation for Fundamental Research of Northwestern Polytechnical University of China (Grant Nos. JC20110270 and 3102014JCQ01029), the Open Project of Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, China (Grant Nos. LZUMMM2013001 and LZUMMM2014007), and the Scholarship Fund of China (Grant No. 201303070058).

Enhanced ferroelectricity and ferromagnetism in Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructure grown by pulsed laser deposition

Wen Xiao-Li (温晓莉)^a, Chen Zhao (陈钊)^b, Lin Xin (林鑫)^a, Niu Li-Wei (牛利伟)^b, Duan Meng-Meng (段萌萌)^b, Zhang Yun-Jie (张云婕)^b, Dong Xiang-Lei (董祥雷)^b, Chen Chang-Le (陈长乐)^b

a State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;
b Key Laboratory of Space Applied Physics and Chemistry of Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072, China

Received:2014-01-26 Revised:2014-03-27 Online:2014-11-15 Published:2014-11-15
Contact: Chen Zhao, Lin Xin E-mail:zhaoch17@nwpu.edu.cn;xlin@nwpu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61078057), the Natural Science Foundation of Shannxi Province, China (Grant No. 2011GM6013), the Foundation for Fundamental Research of Northwestern Polytechnical University of China (Grant Nos. JC20110270 and 3102014JCQ01029), the Open Project of Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, China (Grant Nos. LZUMMM2013001 and LZUMMM2014007), and the Scholarship Fund of China (Grant No. 201303070058).

摘要/Abstract

摘要： Bi_0.9Ba_0.1FeO₃ (BBFO)/La_2/3Sr_1/3MnO₃ (LSMO) heterostructures are fabricated on LaAlO₃ (100) substrates by pulsed laser deposition. Giant remnant polarization value (～ 85 μC/cm²) and large saturated magnetization value (～ 12.4 emu/cm³) for BBFO/LSMO heterostructures are demonstrated at room temperature. Mixed ferroelectric domain structures and low leakage current are observed and in favor of enhanced ferroelectric properties in the BBFO/LSMO heterostructures. The magnetic field-dependent magnetization measurements reveal the enhancement in the magnetic moment and improved magnetic hysteresis loop originating from the BBFO/LSMO interface. The heterostructure is proved to be effective in enhancing the ferroelectric and ferromagnetic performances in multiferroic BFO films at room temperature.

关键词: ferroelectric properties, ferromagnetic properties, Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructures, interface coupling effect

Abstract: Bi_0.9Ba_0.1FeO₃ (BBFO)/La_2/3Sr_1/3MnO₃ (LSMO) heterostructures are fabricated on LaAlO₃ (100) substrates by pulsed laser deposition. Giant remnant polarization value (～ 85 μC/cm²) and large saturated magnetization value (～ 12.4 emu/cm³) for BBFO/LSMO heterostructures are demonstrated at room temperature. Mixed ferroelectric domain structures and low leakage current are observed and in favor of enhanced ferroelectric properties in the BBFO/LSMO heterostructures. The magnetic field-dependent magnetization measurements reveal the enhancement in the magnetic moment and improved magnetic hysteresis loop originating from the BBFO/LSMO interface. The heterostructure is proved to be effective in enhancing the ferroelectric and ferromagnetic performances in multiferroic BFO films at room temperature.

Key words: ferroelectric properties, ferromagnetic properties, Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructures, interface coupling effect

中图分类号: (Strain and interface effects)

77.80.bn

77.80.Dj (Domain structure; hysteresis) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures)) 68.37.-d (Microscopy of surfaces, interfaces, and thin films)

温晓莉, 陈钊, 林鑫, 牛利伟, 段萌萌, 张云婕, 董祥雷, 陈长乐. Enhanced ferroelectricity and ferromagnetism in Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructure grown by pulsed laser deposition[J]. , 2014, 23(11): 117703-117703.

Wen Xiao-Li (温晓莉), Chen Zhao (陈钊), Lin Xin (林鑫), Niu Li-Wei (牛利伟), Duan Meng-Meng (段萌萌), Zhang Yun-Jie (张云婕), Dong Xiang-Lei (董祥雷), Chen Chang-Le (陈长乐). Enhanced ferroelectricity and ferromagnetism in Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructure grown by pulsed laser deposition[J]. Chin. Phys. B, 2014, 23(11): 117703-117703.

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Enhanced ferroelectricity and ferromagnetism in Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructure grown by pulsed laser deposition

Enhanced ferroelectricity and ferromagnetism in Bi_0.9Ba_0.1FeO₃/La_2/3Sr_1/3MnO₃ heterostructure grown by pulsed laser deposition

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