Large low-field magnetoresistance observed in polycrystalline La0.7Ca0.3MnO3 films

被引：3
|
作者：
Wang, ZH [1 ]
Lian, GJ
Gao, J
Zhou, YQ
Kang, JF
Li, MY
Xiong, GC
机构：
[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[2] Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
[3] Shantou Univ, Dept Phys, Shantou 515063, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 1999年 / 16卷 / 01期
关键词：
D O I：
10.1088/0256-307X/16/1/021
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Large low-field magnetoresistance (LFMR) of Delta rho/rho(H) = 40% is obtained at 163 K within +/-3000 Oe in a polycrystalline La0.7Ca0.3MnO3 (LCMO) films prepared by pulsed laser deposition. The ratio Delta rho/rho(H) increases almost linearly with H in the measuring magnetic field range and the peak of LFMR ratios is observed near the resistivity peak temperature, which is different from the observation of spin-polarized intergrain tunnels. This experiment suggests that grain boundaries have large influences an the LFMR. The results indicate that a suitable film process can be used to increase the LFMR of LCMO films.
引用
收藏
页码：59 / 61
页数：3
相关论文
共 50 条
  • [41] Giant magnetic entropy change in colossal magnetoresistance in La0.7Ca0.3MnO3 material in low field
    Debnath, J. C.
    Zeng, R.
    Kim, J. H.
    Dou, S. X.
    JOURNAL OF APPLIED PHYSICS, 2010, 107 (09)
  • [42] Spontaneous magnetization above TC in polycrystalline La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3
    Turcaud, J. A.
    Pereira, A. M.
    Sandeman, K. G.
    Amaral, J. S.
    Morrison, K.
    Berenov, A.
    Daoud-Aladine, A.
    Cohen, L. F.
    PHYSICAL REVIEW B, 2014, 90 (02):
  • [43] Effect of particle size on the giant magnetoresistance of La0.7Ca0.3MnO3
    Mahesh, R
    Mahendiran, R
    Raychaudhuri, AK
    Rao, CNR
    APPLIED PHYSICS LETTERS, 1996, 68 (16) : 2291 - 2293
  • [44] Large Low-Field Magnetoresistance (LFMR) Effect in Free-Standing La0.7Sr0.3MnO3 Films
    Zhang, Cheng
    Ding, Shuaishuai
    Qiao, Kaiming
    Li, Jia
    Li, Zhe
    Yin, Zhuo
    Sun, Jirong
    Wang, Jing
    Zhao, Tongyun
    Hu, Fengxia
    Shen, Baogen
    ACS APPLIED MATERIALS & INTERFACES, 2021, 13 (24) : 28442 - 28450
  • [45] Influence of Er doping on La site on lattice effect of low field magnetoresistance of manganite La0.7Ca0.3MnO3
    Zhang, Xin
    Zhang, Guangyu
    INTEGRATED FERROELECTRICS, 2019, 198 (01) : 1 - 8
  • [46] Microstructural Characteristics of La0.7Ca0.3MnO3 Films and Multilayers
    Mingguang WANG
    Journal of Materials Science & Technology, 2000, (06) : 601 - 604
  • [47] Giant magnetorefractive effect in La0.7Ca0.3MnO3 films
    Granovskii, A. B.
    Sukhorukov, Yu P.
    Telegin, A. V.
    Bessonov, V. D.
    Gan'shina, E. A.
    Kaul', A. R.
    Korsakov, I. E.
    Gorbenko, O. Yu
    Gonzalez, J.
    JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2011, 112 (01) : 77 - 86
  • [48] Giant magnetorefractive effect in La0.7Ca0.3MnO3 films
    A. B. Granovskii
    Yu. P. Sukhorukov
    A. V. Telegin
    V. D. Bessonov
    E. A. Gan’shina
    A. R. Kaul’
    I. E. Korsakov
    O. Yu. Gorbenko
    J. Gonzalez
    Journal of Experimental and Theoretical Physics, 2011, 112 : 77 - 86
  • [49] Microstructural characteristics of La0.7Ca0.3MnO3 films and multilayers
    Wang, M.G.
    Li, D.X.
    He, L.L.
    Ye, H.Q.
    Xiong, G.C.
    Journal of Materials Science and Technology, 2000, 16 (06): : 601 - 604
  • [50] Broad temperature range low field magnetoresistance in La0.7Ca0.3MnO3:nano-ZnO composites
    Siwach, P. K.
    Srivastava, Pankaj
    Singh, Jai
    Singh, H. K.
    Srivastava, O. N.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 481 (1-2) : 17 - 21
12345