Electrical transport properties of (CoxAl1-x)2O3-v oxide magnetic semiconductor and corresponding Co-Al2O3 granular films

被引：9
|
作者：
Tian, Y. F.
Zhang, Y. P.
Yan, Shi-Shen [1 ]
Liu, G. L.
Chen, Y. X.
Mei, L. M.
Ji, G.
Zhang, Z.
机构：
[1] Shandong Univ, Sch Phys & Microelect, Shandong 250100, Peoples R China
[2] Shandong Univ, Natl Key Lab Crystal Mat, Shandong 250100, Peoples R China
[3] Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100022, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 01期
关键词：
D O I：
10.1063/1.2754645
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
(CoxAl1-x)(2)O3-v oxide magnetic semiconductor films were synthesized by introducing an impurity band in the insulating Al2O3 band gap, and the corresponding granular films were obtained by annealing. For both kinds of films, their electrical transport properties are well described by spin dependent variable range hopping mechanism instead of the usually expected intergrain tunnelling. The magnetoresistance was also discussed. (C) 2007 American Institute of Physics.
引用
收藏
页数：3
相关论文
共 50 条
  • [41] Microstructure and magnetic property of Fe-Al2O3 granular films
    Bian, B
    Hirotsu, Y
    Makino, A
    NANOSTRUCTURED MATERIALS, 1997, 8 (08): : 1057 - 1066
  • [42] Magnetic properties of Fex(In2O3)1-x granular film
    Zhang, L
    Zhang, LS
    Zhang, RZ
    Liu, YH
    Zhang, WX
    Huang, BX
    Mei, LM
    PROGRESS IN NATURAL SCIENCE, 1999, 9 (05) : 353 - 358
  • [43] Magnetic properties of Fex(In2O3)1-x granular film
    张林
    张连生
    张汝贞
    刘宜华
    张维咸
    黄宝歆
    梅良模
    Progress in Natural Science, 1999, (05) : 3 - 5
  • [44] Magnetic and tunneling magnetoresistive properties of an all-oxide Fe3O4-Al2O3 granular system
    Tripathy, D.
    Adeyeye, A. O.
    Shannigrahi, S.
    PHYSICAL REVIEW B, 2007, 76 (17)
  • [45] Co-Al2O3 nanocomposites powder prepared by electroless plating
    Zhang, C
    Ling, GP
    He, JH
    MATERIALS LETTERS, 2004, 58 (1-2) : 200 - 204
  • [46] Electrical and optical properties of MoO3-V2O5 mixed oxide films
    Krishnakumar, S
    Menon, CS
    BULLETIN OF MATERIALS SCIENCE, 1996, 19 (04) : 645 - 649
  • [47] CO-AL2O3 SELECTIVE SOLAR ABSORBING FILMS - STRUCTURE AND EFFECTIVE MEDIUM THEORY FOR THE OPTICAL-PROPERTIES
    NIKLASSON, GA
    SOLAR ENERGY MATERIALS, 1988, 17 (03): : 217 - 226
  • [48] CHEMICAL UTILIZATION OF DAWSONITE .2. PREPARATION OF CATALYSTS NI-AL2O3, CO-AL2O3, CR-AL2O3 FROM SYNTHESIZED DAWSONITE AND ITS CHARACTERISTIC PROPERTIES
    KWON, SW
    KIM, BH
    ISHIKAWA, H
    KOG KAGAKU ZASSHI, 1971, 74 (10): : 1987 - &
  • [49] The special magnetic transition in Fex/(In2O3)1-x granular films
    Huang, Baoxin
    Wang, Junhua
    Wang, Zhenhua
    ADVANCED MATERIALS AND PROCESS TECHNOLOGY, PTS 1-3, 2012, 217-219 : 703 - +
  • [50] Magnetic and transport properties in metal-oxide-semiconductor structures of Co3Mn2O/SiO2/Si
    Xiao, S. Q.
    Wang, H.
    Zhao, Z. C.
    Xia, Y. X.
    Wang, Z. H.
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2008, 41 (04)
12345