Transport properties and anomalous fatigue effect of Ag/Bi0.9La0.1FeO3/La0.7Sr0.3MnO3 heterostructures

doi:10.1088/1674-1056/23/9/097702

中国物理B ›› 2014, Vol. 23 ›› Issue (9): 97702-097702.doi: 10.1088/1674-1056/23/9/097702

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

Transport properties and anomalous fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures

高荣礼^{a b}, 符春林^a, 蔡苇^a, 陈刚^a, 邓小玲^a, 杨怀文^b, 孙继荣^b, 沈保根^b

a School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;
b Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2014-05-02 修回日期:2014-05-14 出版日期:2014-09-15 发布日期:2014-09-15
基金资助:
Project supported by the Knowledge Innovation Project of the Chinese Academy of Sciences, the Beijing Municipal Natural Science Foundation, the National Natural Science Foundation of China (Grant Nos. 51102288 and 51372283), the Natural Science Foundation Project of Chongqing, China (Grant No. CSTC2012jjA50017), and the Cooperative Project of Academician Workstation of Chongqing University of Science & Technology, China (Grant Nos. CKYS2014Z01 and CKYS2014Y04).

Transport properties and anomalous fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures

Gao Rong-Li (高荣礼)^{a b}, Fu Chun-Lin (符春林)^a, Cai Wei (蔡苇)^a, Chen Gang (陈刚)^a, Deng Xiao-Ling (邓小玲)^a, Yang Huai-Wen (杨怀文)^b, Sun Ji-Rong (孙继荣)^b, Shen Bao-Gen (沈保根)^b

a School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;
b Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2014-05-02 Revised:2014-05-14 Online:2014-09-15 Published:2014-09-15
Contact: Gao Rong-Li E-mail:gaorongli2008@163.com
Supported by:
Project supported by the Knowledge Innovation Project of the Chinese Academy of Sciences, the Beijing Municipal Natural Science Foundation, the National Natural Science Foundation of China (Grant Nos. 51102288 and 51372283), the Natural Science Foundation Project of Chongqing, China (Grant No. CSTC2012jjA50017), and the Cooperative Project of Academician Workstation of Chongqing University of Science & Technology, China (Grant Nos. CKYS2014Z01 and CKYS2014Y04).

摘要/Abstract

摘要： The transport properties and fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures are described. By examining the I-V curves, an anomalous fatigue effect was found and its influences on resistive states were studied. I-V curves combined with C-f spectra were used to directly analyze the transport properties and fatigue effect. Compared to the first I-V cycle state, this structure shows more than one order increase of resistance after 100 cycles of “I-V curve training”. The redistribution of oxygen vacancies in the depletion layer of Ag/Bi_0.9La_0.1FeO₃ is believed to be responsible for the different resistance mechanisms and tenfold magnitude drop in resistance. The resistive switching is understood to be caused by electric field-induced carrier trapping and detrapping, which changes the depletion layer thickness at the Ag/Bi_0.9La_0.1FeO₃ interface.

关键词: transport properties, fatigue effect, switching, heterostructure

Abstract: The transport properties and fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures are described. By examining the I-V curves, an anomalous fatigue effect was found and its influences on resistive states were studied. I-V curves combined with C-f spectra were used to directly analyze the transport properties and fatigue effect. Compared to the first I-V cycle state, this structure shows more than one order increase of resistance after 100 cycles of “I-V curve training”. The redistribution of oxygen vacancies in the depletion layer of Ag/Bi_0.9La_0.1FeO₃ is believed to be responsible for the different resistance mechanisms and tenfold magnitude drop in resistance. The resistive switching is understood to be caused by electric field-induced carrier trapping and detrapping, which changes the depletion layer thickness at the Ag/Bi_0.9La_0.1FeO₃ interface.

Key words: transport properties, fatigue effect, switching, heterostructure

中图分类号: (Polarization and depolarization)

77.22.Ej

77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials) 77.55.Nv (Multiferroic/magnetoelectric films) 77.90.+k (Other topics in dielectrics, piezoelectrics, and ferroelectrics and their properties)

高荣礼, 符春林, 蔡苇, 陈刚, 邓小玲, 杨怀文, 孙继荣, 沈保根. Transport properties and anomalous fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures[J]. 中国物理B, 2014, 23(9): 97702-097702.

Gao Rong-Li (高荣礼), Fu Chun-Lin (符春林), Cai Wei (蔡苇), Chen Gang (陈刚), Deng Xiao-Ling (邓小玲), Yang Huai-Wen (杨怀文), Sun Ji-Rong (孙继荣), Shen Bao-Gen (沈保根). Transport properties and anomalous fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures[J]. Chin. Phys. B, 2014, 23(9): 97702-097702.

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Transport properties and anomalous fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures

Transport properties and anomalous fatigue effect of Ag/Bi_0.9La_0.1FeO₃/La_0.7Sr_0.3MnO₃ heterostructures

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