Electric-field control of electronic transport properties and enhanced magnetoresistance in La0.7Sr0.3MnO3/0.5BaZr0.2Ti0.8O3-0.5Ba0.7Ca0.3TiO3lead-free multiferroic structures

doi:10.1063/1.4990513

	Electric-field control of electronic transport properties and enhanced magnetoresistance in La0.7Sr0.3MnO3/0.5BaZr0.2Ti0.8O3-0.5Ba0.7Ca0.3TiO3lead-free multiferroic structures
	Yan, Jian-Min 1,2; Gao, Guan-Yin 3; Liu, Yu-Kuai 4; Wang, Fei-Fei 1; Zheng, Ren-Kui 2
刊名	Journal of Applied Physics
	2017
卷号	122 期号:13
ISSN号	00218979
DOI	10.1063/1.4990513
英文摘要	We report the fabrication of lead-free multiferroic structures by depositing ferromagnetic La0.7Sr0.3MnO3(LSMO) polycrystalline films on polished 0.5BaZr0.2Ti0.8O3-0.5Ba0.7Ca0.3TiO3(BZT-BCT) piezoelectric ceramic substrates. By applying electric fields to the BZT-BCT along the thickness direction, the resistivity of LSMO films can be effectively manipulated via the piezoelectric strain of the BZT-BCT. Moreover, the LSMO polycrystalline films exhibit almost temperature independent and significantly enhanced magnetoresistance (MR) below TC. At T = 2 K and H = 8 T, the MR of polycrystalline films is approximately two orders of magnitude higher than that of LSMO epitaxial films grown on (LaAlO3)0.3(SrAl1/2Ta1/2O3)0.7single-crystal substrates. The enhanced MR mainly results from the spin-polarized tunneling of charge carriers across grain boundaries. The LSMO/BZT-BCT structures with electric-field controllable modulation of resistivity and enhanced MR effect may have potential applications in low-energy consumption and environmentally friendly electronic devices. © 2017 Author(s).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25428]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai; 200234, China; 2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 3.Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei; 230026, China; 4.Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong, Hong Kong
推荐引用方式 GB/T 7714	Yan, Jian-Min,Gao, Guan-Yin,Liu, Yu-Kuai,et al. Electric-field control of electronic transport properties and enhanced magnetoresistance in La0.7Sr0.3MnO3/0.5BaZr0.2Ti0.8O3-0.5Ba0.7Ca0.3TiO3lead-free multiferroic structures[J]. Journal of Applied Physics,2017,122(13).
APA	Yan, Jian-Min,Gao, Guan-Yin,Liu, Yu-Kuai,Wang, Fei-Fei,&Zheng, Ren-Kui.(2017).Electric-field control of electronic transport properties and enhanced magnetoresistance in La0.7Sr0.3MnO3/0.5BaZr0.2Ti0.8O3-0.5Ba0.7Ca0.3TiO3lead-free multiferroic structures.Journal of Applied Physics,122(13).
MLA	Yan, Jian-Min,et al."Electric-field control of electronic transport properties and enhanced magnetoresistance in La0.7Sr0.3MnO3/0.5BaZr0.2Ti0.8O3-0.5Ba0.7Ca0.3TiO3lead-free multiferroic structures".Journal of Applied Physics 122.13(2017).