Temperature dependence of tunnel-type GMR in insulating granular systems

被引：26
|
作者：
Mitani, S
Fujimori, H
Ohnuma, S
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 98077, Japan
[2] Res Inst Elect & Magnet Mat, Sendai, Miyagi 982, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷
关键词：
magnetoresistance-giant; granular systems; tunneling; thin films sputtered;
D O I：
10.1016/S0304-8853(97)00498-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated temperature dependence of tunnel-type giant magnetoresistance (GMR) in insulating granular systems of Co-Al-O and Fe-Al-O. Below 50 K the magnetoresistance Delta/rho(max) remarkably increases with decreasing temperature, resulting in Delta rho/rho(max) = 16% and 25% at 4.2 K for Co52Al20O28 and Fe44Al17O39, respectively. This increase cannot be interpreted well by means of extending the theory for tunnel-type GMR in ferromagnetic tunnel junctions, but it suggests that the magnitude of GMR is influenced by Coulomb blockade in insulating granular systems. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：919 / 920
页数：2
相关论文
共 50 条
  • [41] Research on interaction mechanism of tunnel-type anchorage with undercrossing tunnel for suspension bridge
    Li Gao-hui
    Wu Cong-shi
    Deng Long-bo
    Wei Xiao-yang
    Li Chen
    ROCK AND SOIL MECHANICS, 2010, 31 : 363 - 369
  • [42] Enhancement of low-field-magnetoresistive response of tunnel-type magnetoresistance in metal-nonmetal granular thin films
    Kobayashi, N
    Ohnuma, S
    Murakami, S
    Masumoto, T
    Mitani, S
    Fujimori, H
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 188 (1-2) : 30 - 34
  • [43] Analytical model for the performance of the tunnel-type greenhouse drier
    Condorí, M
    Saravia, L
    RENEWABLE ENERGY, 2003, 28 (03) : 467 - 485
  • [44] Tunnel-Type Magneto-Dielectric Effect and Its Annealing Study in Co-SiO2 Granular Films
    Cao, Yang
    Kobayashi, Nobukiyo
    Ohnuma, Shigehiro
    Masumoto, Hiroshi
    MATERIALS TRANSACTIONS, 2018, 59 (04) : 585 - 589
  • [45] Chemical Sample Preparation of Plant Materials in Tunnel-Type Microwave Decomposition Systems for Elemental Analysis
    Shabanova, E. V.
    Zak, A. A.
    Vasil'eva, I. E.
    JOURNAL OF ANALYTICAL CHEMISTRY, 2024, 79 (03) : 287 - 302
  • [46] GLOBAL EXPONENTIAL ASYMPTOTICS OF SOLUTIONS OF TUNNEL-TYPE EQUATIONS
    MASLOV, VP
    DOKLADY AKADEMII NAUK SSSR, 1981, 261 (05): : 1059 - 1062
  • [47] Chemical Sample Preparation of Plant Materials in Tunnel-Type Microwave Decomposition Systems for Elemental Analysis
    E. V. Shabanova
    A. A. Zak
    I. E. Vasil’eva
    Journal of Analytical Chemistry, 2024, 79 : 287 - 302
  • [48] Study on the bearing characteristic and failure pattern of tunnel-type anchorage
    Wang D.
    Tang H.
    Ge X.
    Yin X.
    Deng Q.
    Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 2019, 38 : 3374 - 3383
  • [49] Downpull on tunnel-type high-head leaf gates
    Drobir, H
    Kienberger, V
    Seyerl, J
    HYDRAULICS OF RIVERS WATER WORKS AND MACHINERY, VOL II, THEME D, PROCEEDINGS: 21ST CENTURY: THE NEW ERA FOR HYDRAULIC RESEARCH AND ITS APPLICATIONS, 2001, : 473 - 478
  • [50] Structure-parameter dependence of modality of macroscopic quantum effect in superconductor junction (I). Tunnel-type junction
    Sugahara, Masanori, 1816, (28):
12345