Electrical transport and magnetoresistance in La2/3Ca1/3MnO3/BaZrO3 composites

被引：4
|
作者：
Gao, Ling [1 ]
Bai, Lifeng [1 ]
Li, Chengshan [1 ]
Liu, Xianghong [1 ]
Wu, Zhanwen [2 ]
Zheng, Dongning [2 ]
Lu, Yafeng [1 ]
机构：
[1] NW Inst Nonferrous Met Res, Xian 710016, Shaanxi, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 522卷
关键词：
Composite; Percolation conduction; La2/3Ca1/3MnO3; BaZrO3; LOW-FIELD MAGNETORESISTANCE; COLOSSAL MAGNETORESISTANCE; GRAIN-BOUNDARIES; PERCOLATION; JUNCTIONS;
D O I：
10.1016/j.jallcom.2012.01.024
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report the results of electrical resistivity and magnetoresistance (MR) measurements carried out on La2/3Ca1/3MnO3/BaZrO3 composites prepared by solid state reaction method. The metal-to-insulator transition and the magnitude of magnetoresistance are significantly influenced by the content of BaZrO3, suggesting the presence of ionic diffusion between La2/3Ca1/3MnO3 and BaZrO3, although the dependence of the electrical resistivity as a function of La2/3Ca1/3MnO3 volume fraction can be roughly described by classical percolation conduction model. The conductive behavior above the metal-to-insulator transition temperature can be well explained by Mott's variable range hopping model. (C) 2012 Elsevier B. V. All rights reserved.
引用
收藏
页码：25 / 29
页数：5
相关论文
共 50 条
  • [41] Transport properties across the La2/3Ca1/3MnO3/SrTiO3 heterointerface
    Balcells, L. L.
    Abad, L. L.
    Rojas, H.
    Del Pino, A. Perez
    Estrade, S.
    Arbiol, J.
    Peiro, F.
    Martinez, B.
    JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)
  • [42] A substantial improvement in magnetoresistance by Cu doping at Mn sites of La2/3Ca1/3MnO3
    Yuan, SL
    Yang, YP
    Xia, ZC
    Peng, G
    Zhang, GH
    Tang, J
    Liu, J
    Zhang, LJ
    Zhong, QH
    Liu, S
    Chen, L
    Feng, W
    Li, ZY
    Liu, L
    Zhang, GQ
    Tu, F
    Xiong, CS
    SOLID STATE COMMUNICATIONS, 2002, 123 (1-2) : 55 - 58
  • [43] La2/3Ca1/3MnO3/Eu2CuO4/La2/3Ca1/3MnO3磁性隧道结的制备与表征
    唐为华
    李培刚
    L.H.Li
    J.Gao
    物理学报, 2005, (01) : 291 - 294
  • [44] Electrical and magnetic properties of Ga substituted La2/3Ca1/3MnO3 perovskite
    Chik, A
    Hahm, SA
    Sharmiwati, MS
    Lim, KP
    Gebrel, Z
    Kabashi, KK
    Yunus, WMM
    Mokhsin, MM
    Dalimin, MN
    SENSORS: ASIASENSE 2003 - ASIAN CONFERENCE ON SENSORS, 2003, : 73 - 77
  • [45] Enhancement of magnetoresistance in La2/3Ca1/3MnO3/xCuMn2O4 nanocomposites
    Miao, Ju-Hong
    Yuan, Song-Liu
    Ren, Guang-Ming
    Xiao, Xun
    Yu, Gong-Qi
    Wang, Yong-Qiang
    Yin, Shi-Yan
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (03) : 707 - 711
  • [46] Microwave response of La2/3Ca1/3MnO3 thin films
    Lisauskas, A
    Suziedelis, A
    Lucun, L
    Oginskis, A
    Gradauskas, J
    Vengalis, B
    Asmontas, S
    INTERFACIAL EFFECTS AND NOVEL PROPERTIES OF NANOMATERIALS, 2003, 94 : 257 - 260
  • [47] Translation and orientation domain boundaries in La2/3Ca1/3MnO3
    Ding, Y
    Wang, ZL
    PHILOSOPHICAL MAGAZINE, 2006, 86 (16) : 2329 - 2342
  • [48] Transition dependence of La2/3Ca1/3MnO3 oxide on microstructure
    Zhang, YB
    Li, S
    Sun, CQ
    Widjaja, S
    Hing, P
    JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2002, 122 (2-3) : 266 - 271
  • [49] Effect of grain boundary on electrical, magnetic and magnetoresistance properties in La2/3Ca1/3MnO3/CuMn2O4 composites
    Li, Pai
    Yuan, Songliu
    Liu, Li
    Wang, Xueli
    Wang, Yongqiang
    Tian, Zhaoming
    He, Jinghua
    Yuan, Shijun
    Liu, Kuili
    Ying, Shiyan
    Wang, Chuanhui
    SOLID STATE COMMUNICATIONS, 2008, 146 (11-12) : 518 - 521
  • [50] Temperature-dependent photoluminescence in La2/3Ca1/3MnO3
    Ding, T
    Zheng, WT
    Tian, HW
    Zang, JF
    Zhao, ZD
    Yu, SS
    Li, XT
    Meng, FL
    Wang, YM
    Kong, XG
    SOLID STATE COMMUNICATIONS, 2004, 132 (12) : 815 - 819
12345