The dipolar interaction in CoFeB/MgO/CoFeB perpendicular magnetic tunnel junction

被引：7
|
作者：
Tsai, C. C. [1 ]
Cheng, Chih-Wei [2 ]
Weng, Yi-Chien [2 ]
Chern, G. [2 ]
机构：
[1] Chang Jung Christian Univ, Dept Engn & Management Adv Technol, Tainan 71101, Taiwan
[2] Natl Chung Cheng Univ, Dept Phys, Chiayi 62102, Taiwan
来源：
JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 17期
关键词：
INTERLAYER; ANISOTROPY;
D O I：
10.1063/1.4864245
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Ultrathin CoFeB/MgO/CoFeB system with perpendicular magnetic anisotropy is a promising candidate for the high density magnetic random access memory. However, a dipolar interaction between the CoFeB layers may introduce a minor loop shift (H-s) and causes uncertainty during the operation. In this report, we systematically studied the dipolar effect in these structures and found that the coupling may be either ferromagnetic or antiferromagnetic (15 Oe> Hs>-15 Oe) depending upon the CoFeB thickness (0.9-1.4 nm). A modified Fabry-Perot model, which accounts the Bloch wave interference, may explain the present observations of the dipolar effect in the perpendicular junctions of CoFeB/MgO/CoFeB. (C) 2014 AIP Publishing LLC.
引用
收藏
页数：3
相关论文
共 50 条
  • [21] Micromagnetic Study of Edge-Damage Effects in Perpendicular CoFeB/MgO Magnetic Tunnel Junction
    Yoshida, Chikako
    Tanaka, Tomohiro
    Ataka, Tadashi
    Furuya, Atsushi
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2019, 55 (07)
  • [22] Langevin magnetic sensor using perpendicular anisotropic CoFeB/MgO/CoFeB tunneling junction with ferromagnetic and superparamagnetic CoFeB layers.
    Cheng, C.
    Wang, C.
    Li, D.
    Han, X.
    Chern, G.
    [J]. 2015 IEEE MAGNETICS CONFERENCE (INTERMAG), 2015,
  • [23] Origin of asymmetry of tunneling conductance in CoFeB/MgO/CoFeB tunnel junction
    Jang, Youngman
    Lee, Kisu
    Lee, Seungkyo
    Yoon, Seungha
    Cho, B. K.
    Cho, Y. J.
    Kim, K. W.
    Kim, Kwang-seok
    [J]. JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)
  • [24] Spin reorientation transition in CoFeB/MgO/CoFeB tunnel junction enabled by ultrafast laser-induced suppression of perpendicular magnetic anisotropy
    Shelukhin, Leonid A.
    Gareev, Rashid R.
    Zbarsky, Vladyslav
    Walowski, Jakob
    Munzenberg, Markus
    Pertsev, Nikolay A.
    Kalashnikova, Alexandra M.
    [J]. NANOSCALE, 2022, 14 (22) : 8153 - 8162
  • [25] Spin transfer switching in TbCoFe/CoFeB/MgO/CoFeB/TbCoFe magnetic tunnel junctions with perpendicular magnetic anisotropy
    Nakayama, Masahiko
    Kai, Tadashi
    Shimomura, Naoharu
    Amano, Minoru
    Kitagawa, Eiji
    Nagase, Toshihiko
    Yoshikawa, Masatoshi
    Kishi, Tatsuya
    Ikegawa, Sumio
    Yoda, Hiroaki
    [J]. JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)
  • [26] DC Bias Reversal Behavior of Spin-Torque Ferromagnetic Resonance Spectra in CoFeB/MgO/CoFeB Perpendicular Magnetic Tunnel Junction
    Yu, Tian
    Naganuma, Hiroshi
    Oogane, Mikihiko
    Ando, Yasuo
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2017, 53 (09)
  • [27] Magnetoelectric Effect in CoFeB/MgO/CoFeB Magnetic Tunnel Junctions
    Pashen'kin, I. Yu
    Sapozhnikov, M., V
    Gusev, N. S.
    Rogov, V. V.
    Tatarskii, D. A.
    Fraerman, A. A.
    Volochaev, M. N.
    [J]. JETP LETTERS, 2020, 111 (12) : 690 - 693
  • [28] Conductance anomalies of CoFeB/MgO/CoFeB magnetic tunnel junctions
    Ringer, S.
    Vieth, M.
    Baer, L.
    Ruehrig, M.
    Bayreuther, G.
    [J]. PHYSICAL REVIEW B, 2014, 90 (17)
  • [29] Magnetoelectric Effect in CoFeB/MgO/CoFeB Magnetic Tunnel Junctions
    I. Yu. Pashen’kin
    M. V. Sapozhnikov
    N. S. Gusev
    V. V. Rogov
    D. A. Tatarskii
    A. A. Fraerman
    M. N. Volochaev
    [J]. JETP Letters, 2020, 111 : 690 - 693
  • [30] Tunneling spectroscopy in CoFeB/MgO/CoFeB magnetic tunnel junctions
    Ono, K
    Daibou, T
    Ahn, SJ
    Sakuraba, Y
    Miyakoshi, T
    Morita, T
    Kikuchi, Y
    Oogane, M
    Ando, Y
    Miyazaki, T
    [J]. JOURNAL OF APPLIED PHYSICS, 2006, 99 (08)
12345