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Enhanced ferroelectricity and ferromagnetism in Bio.9Bao. 1FeO3/Laz/3Srl/3MnO3 heterostructure grown by pulsed laser deposition

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TM221[电气工程—电工理论与新技术;一般工业技术—材料科学与工程] O484.1[理学—固体物理;理学—物理]
作者机构：[1]State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China, [2]Key Laboratory of Space Applied Physics and Chemistry of Ministry of Education, School of Science, Northwestern Polytechnical University, Xi' an 710072, China
相关基金：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）.

作者：温晓莉[1], 陈钊[2], 林鑫[1], 牛利伟[2], 段萌萌[2], 张云婕[2], 董祥雷[2], 陈长乐[2]

关键词：脉冲激光沉积, 异质结构, 铁磁性, 铁电性, LSMO, 饱和磁化, 铁电畴结构, 剩余极化, ferroelectric properties, ferromagnetic properties, Bio.9Bao.lFeO3/La2/3Srt/3MnO3 heterostruc-tures, interface coupling effect

中文摘要：

Bi0.9Ba0.1FeO3(BBFO)/La2/3Sr1/3MnO3(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.

英文摘要：

Bi0.9Ba0.lFeO3 （BBFO）/La2/3Srl/3MnO3 （LSMO） heterostructures are fabricated on LaA103 （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 ferroelectrie properties in the BBFO/LSMO het- erostructures. 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.

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