MgAl2O4(001) based magnetic tunnel junctions made by direct sputtering of a sintered spinel target

被引：39
|
作者：
Belmoubarik, Mohamed [1 ]
Sukegawa, Hiroaki [1 ]
Ohkubo, Tadakatsu [1 ]
Mitani, Seiji [1 ]
Hono, Kazuhiro [1 ]
机构：
[1] Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
来源：
APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 13期
关键词：
ROOM-TEMPERATURE; MAGNETORESISTANCE;
D O I：
10.1063/1.4945049
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We developed a fabrication process of an epitaxial MgAl2O4 barrier for magnetic tunnel junctions (MTJs) using a direct sputtering method from an MgAl2O4 spinel sintered target. Annealing the sputter-deposited MgAl2O4 layer sandwiched between Fe electrodes led to the formation of a (001)-oriented cation-disorder spinel with atomically sharp interfaces and lattice-matching with the Fe electrodes. A large tunnel magnetoresistance ratio up to 245% at 297K (436% at 3K) was achieved in the Fe/MgAl2O4/Fe(001) MTJ as well as an excellent bias voltage dependence. These results indicate that the direct sputtering is an alternative method for the realization of high performance MTJs with a spinel-based tunnel barrier. (C) 2016 AIP Publishing LLC.
引用
收藏
页数：5
相关论文
共 50 条
  • [31] New synthesis methods of MgAl2O4 spinel
    Pacurariu, C.
    Lazau, I.
    Ecsedi, Z.
    Lazau, R.
    Barvinschi, P.
    Marginean, G.
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (2-3) : 707 - 710
  • [32] CHARACTERIZATION AND SINTERING OF ACTIVE MGAL2O4 SPINEL
    BRATTON, RJ
    AMERICAN CERAMIC SOCIETY BULLETIN, 1968, 47 (09): : 883 - +
  • [33] Synthesis of MgAl2O4 Spinel in a Thermal Plasma
    Shekhovtsov, V. V.
    Skripnikova, N. K.
    Ulmasov, A. B.
    INORGANIC MATERIALS, 2023, 59 (08) : 851 - 857
  • [34] CHARACTERIZATION AND SINTERING OF ACTIVE MGAL2O4 SPINEL
    BRATTON, RJ
    AMERICAN CERAMIC SOCIETY BULLETIN, 1968, 47 (04): : 426 - &
  • [35] Synthesis and characterization of MgAl2O4 spinel nanowires
    Wu, XCC
    Tao, YRR
    Han, ZJJ
    Zhang, BDD
    JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (10) : 2649 - 2651
  • [36] Development of Transparent MgAl2O4 Spinel Ceramics
    Li, Fa-hui
    Li, Jian-Bao
    Lin, Hong
    Huang, Cun-Xin
    Lei, Mu-Yun
    Du, Hong-Bing
    HIGH-PERFORMANCE CERAMICS VI, 2010, 434-435 : 649 - +
  • [37] SESSILE DISSOCIATION IN THE STOICHIOMETRIC SPINEL MGAL2O4
    DOUKHAN, N
    DUCLOS, R
    ESCAIG, B
    JOURNAL DE PHYSIQUE, 1979, 40 (04): : 381 - 387
  • [38] CHARACTERIZATION AND SINTERING OF REACTIVE MGAL2O4 SPINEL
    BRATTON, RJ
    AMERICAN CERAMIC SOCIETY BULLETIN, 1969, 48 (11): : 1069 - &
  • [39] Controlling oxygen distribution of an MgAl2O4 barrier for magnetic tunnel junctions by two-step process
    Ichikawa, Shinto
    Cheng, P-H
    Sukegawa, Hiroaki
    Ohkubo, Tadakatsu
    Hono, Kazuhiro
    Mitani, Seiji
    Nakada, Katsuyuki
    APPLIED PHYSICS LETTERS, 2020, 117 (12)
  • [40] WORK SOFTENING IN STOICHIOMETRIC SPINEL (MGAL2O4)
    DONLON, WT
    MITCHELL, TE
    HEUER, AH
    PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1982, 45 (06): : 1013 - 1036
12345