Magnetoresistance plateau in La2/3Ca1/3Bi x Mn1-x O3 granular system

被引：1
|
作者：
Zhang Guoqing [1 ]
Pan Chunxu [1 ,2 ]
Zhang Guodong [3 ]
机构：
[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Key Lab Acoust & Photon Mat & Devices, Minist Educ, Wuhan 430072, Peoples R China
[3] Wuhan Univ, Dept Mat Engn, Wuhan 430072, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2009年 / 24卷 / 01期
关键词：
perovskite manganite; phase segregation; composite; magnetoresistance plateau; ROOM-TEMPERATURE MAGNETORESISTANCE; LOW-FIELD; GIANT MAGNETORESISTANCE; TRANSPORT-PROPERTIES; GRAIN-BOUNDARIES; FILMS; LA0.67CA0.33MNO3; POLYCRYSTALLINE; ENHANCEMENT; COMPOSITES;
D O I：
10.1007/s11595-009-1061-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of doping additional Bi on the magnetoresistance (MR) of La2/3Ca1/3B (x) Mn1-x O-3 was investigated. It is found that traditional colossal magnetoresistance (CMR) peak can only be observed in the x < 0.05 samples and the peak value decreases with the increase of x, but the xa parts per thousand yen0.05 samples show a magnetoresistance plateau above 200 K because of the presence of additional (La,Ca,Bi)-O layers. Moreover, this MR plateau is enhanced for the segregation of the La, Ca, and Bi elements.
引用
收藏
页码：61 / 64
页数：4
相关论文
共 50 条
  • [1] Magnetoresistance behavior of (La2/3Ca1/3)(Mn(3-x)/3Fex/3)O3 system
    Xu, MX
    Jiao, ZK
    JOURNAL OF INORGANIC MATERIALS, 1999, 14 (02) : 307 - 311
  • [2] Magnetoresistance Plateau in La2/3Ca1/3BixMn1-xO3 Granular System
    张国庆
    潘春旭
    Journal of Wuhan University of Technology(Materials Science), 2009, 24 (01) : 61 - 64
  • [3] Transport and magnetism in La2/3Ca1/3(Mn1-xCox)O3 and La2/3Ca1/3(Mn1-xNix)O3
    J Appl Phys, 8 pt 2B (4974):
  • [4] Magnetoresistance plateau in La2/3Ca1/3BixMn1 − xO3 granular system
    Guoqing Zhang
    Chunxu Pan
    Guodong Zhang
    Journal of Wuhan University of Technology-Mater. Sci. Ed., 2009, 24 : 61 - 64
  • [5] Colossal magnetoresistance and electronic properties of La2/3Ca1/3(Mn0.85Zn0.15)O3
    Xu, MX
    Jiao, ZK
    JOURNAL OF MATERIALS SCIENCE LETTERS, 1999, 18 (16) : 1307 - 1309
  • [6] Transport and magnetism in La2/3Ca1/3(Mn1-xCox)O-3 and La2/3Ca1/3(Mn1-xNix)O-3
    Rubinstein, M
    Tritt, TM
    Synder, JE
    JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) : 4974 - 4974
  • [7] Giant Low-Field Magnetoresistance in Polycrystalline La2/3Ca1/3Mn1-xCux O3 Sintered at 1100 ℃
    杨应平
    袁松柳
    刘洁
    张国庆
    夏正才
    Journal of Rare Earths, 2004, (03) : 414 - 417
  • [8] Enhanced magnetoresistance in granular La2/3Ca1/3MnO3 polymer composites
    Huang, YH
    Chen, X
    Wang, ZM
    Liao, CS
    Yan, CH
    Zhao, HW
    Shen, BG
    JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) : 7733 - 7735
  • [9] In替代(La2/3Ca1/3)(Mn（3-2x）/3In2x/3)O3体系巨磁电阻效应的研究
    徐明祥
    焦正宽
    物理学报, 1998, (06) : 127 - 132
  • [10] Magnetoresistance behavior of La(2-x/3)Bi-x/3Ca1/3MnO3 (x=0.4)
    Tang, WH
    Liang, JK
    Liang, CL
    Sun, JR
    Rao, GH
    CHINESE PHYSICS LETTERS, 1997, 14 (06) : 453 - 456
12345