Magnetism and magnetoresistance from different origins in Co/ZnO:Al granular films

被引：4
|
作者：
Quan, Zhiyong [1 ]
Liu, Xia
Song, Zhilin
Xu, Xiaohong [1 ]
机构：
[1] Shanxi Normal Univ, Key Lab Magnet Mol & Magnet Informat Mat, Minist Educ, Linfen 041004, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2016年 / 502卷
基金：
国家高技术研究发展计划(863计划);
关键词：
Granular films; Magnetoresistance; Superparamagnetic; Magnetic particle; CU-CO ALLOYS; GIANT MAGNETORESISTANCE; THIN-FILMS; SYSTEMS; COBALT;
D O I：
10.1016/j.physb.2016.08.039
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Co/ZnO:Al granular films were made on glass substrates by sequential magnetron sputter deposition of ultrathin Co layer and ZnO:Al layer at room temperature. The as-deposited films consist of super paramagnetic Co particles dispersed in ZnO:Al ( 2% Al) semiconductor matrix. Distinguished magnetoresistance effect at room temperature was obtained in the as-deposited films, which obviously reduced after annealing due to the growth of Co particles. The size of important magnetic particles was analyzed by Langevin function for hysteresis loops and magnetoresistance curves at room temperature. It was found that small magnetic particle contribute to magnetoresistance behavior and large particles dominate the room temperature magnetism in Co/ZnO:Al granular films. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：16 / 20
页数：5
相关论文
共 50 条
  • [1] Investigation of structure and magnetoresistance in Co/ZnO films
    Quan, Zhi-Yong
    Xu, Xiao-Hong
    Li, Xiao-Li
    Feng, Q.
    Gehring, G. A.
    JOURNAL OF APPLIED PHYSICS, 2010, 108 (10)
  • [2] Resistivity dependence of magnetoresistance in Co/ZnO films
    Quan, Zhi-Yong
    Zhang, Li
    Liu, Wei
    Zeng, Hao
    Xu, Xiao-Hong
    NANOSCALE RESEARCH LETTERS, 2014, 9 : 1 - 7
  • [3] Tunneling magnetoresistance effect in Co/TPD granular films
    Sheng, P.
    Ni, G.
    Yin, J. F.
    Zhang, Y.
    Tang, Z. Y.
    Zhou, S. M.
    Jin, Q. Y.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 477 (1-2) : 32 - 35
  • [4] Tunneling magnetoresistance in Co-Ni-N/Al granular thin films
    Tanase, S. I.
    Tanase, D.
    Pascariu, P.
    Vlad, L.
    Sandu, A. V.
    Georgescu, V.
    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2010, 167 (02): : 119 - 123
  • [5] Giant magnetoresistance of Co-Al-O insulating granular films deposited at various substrate temperatures
    Zhang, ZG
    Li, CX
    Li, C
    Ge, SH
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 198-99 : 30 - 32
  • [6] Resistivity dependence of magnetoresistance in Co/ZnO films
    Zhi-Yong Quan
    Li Zhang
    Wei Liu
    Hao Zeng
    Xiao-Hong Xu
    Nanoscale Research Letters, 9
  • [7] Transport Properties of Ferromagnetic Granular Co-Al-O Films
    Nakamura, S.
    Iwashita, T.
    Nojima, T.
    Yoshihara, A.
    Ohnuma, S.
    Fujimori, H.
    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, 200
  • [8] Magnetoresistance in Cu-Co granular films and Co/Cu/Co sandwiches
    Wang, H
    Jin, QY
    Chu, C
    Shen, YH
    Chen, HF
    Li, FM
    Bie, QS
    Lu, M
    Zhai, HR
    THIRD INTERNATIONAL CONFERENCE ON THIN FILM PHYSICS AND APPLICATIONS, 1998, 3175 : 440 - 443
  • [9] Magnetoresistance of ZnO:Co Thin Films at Low Temperatures
    Kytin, V. G.
    Maximova, O. V.
    Kulbachinskii, V. A.
    Muftieva, D. A.
    Burova, L. I.
    Kaul, A. R.
    JOURNAL OF LOW TEMPERATURE PHYSICS, 2016, 185 (5-6) : 707 - 711
  • [10] Magnetoresistance of ZnO:Co Thin Films at Low Temperatures
    V. G. Kytin
    O. V. Maximova
    V. A. Kulbachinskii
    D. A. Muftieva
    L. I. Burova
    A. R. Kaul
    Journal of Low Temperature Physics, 2016, 185 : 707 - 711
12345