Temperature dependence of the switching field in all-perpendicular spin-valve nanopillars

被引：11
|
作者：
Gopman, D. B. [1 ]
Bedau, D. [1 ,2 ]
Wolf, G. [1 ]
Mangin, S. [3 ]
Fullerton, E. E. [4 ]
Katine, J. A. [2 ]
Kent, A. D. [1 ]
机构：
[1] NYU, Dept Phys, New York, NY 10003 USA
[2] HGST San Jose Res Ctr, San Jose, CA 95135 USA
[3] Univ Lorraine, CNRS, Inst Jean Lamour, UMR 7198, Nancy, France
[4] Univ Calif San Diego, CMRR, La Jolla, CA 92093 USA
来源：
PHYSICAL REVIEW B | 2013年 / 88卷 / 10期
基金：
美国国家科学基金会;
关键词：
MAGNETIZATION REVERSAL; JUNCTION; FLUCTUATIONS; ANISOTROPY; FILMS; TIME;
D O I：
10.1103/PhysRevB.88.100401
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present temperature dependent switching measurements of the Co/Ni multilayered free element of 75-nm-diameter spin-valve nanopillars. Angular dependent hysteresis measurements as well as switching field measurements taken at low temperature are in agreement with a model of thermal activation over a perpendicular anisotropy barrier. However, the statistics of switching (i.e. the mean switching field and the variance of the switching field distribution) from 20 up to 400 K are in disagreement with a Neel-Brown model that assumes a temperature independent barrier height and anisotropy field. We introduce a modified Neel-Brown model that fits the experimental data in which we attribute a T-3/2 dependence to the barrier height and the anisotropy field due to the temperature dependent magnetization and anisotropy energy.
引用
收藏
页数：5
相关论文
共 50 条
  • [1] Bimodal switching field distributions in all-perpendicular spin-valve nanopillars
    Gopman, D. B.
    Bedau, D.
    Mangin, S.
    Fullerton, E. E.
    Katine, J. A.
    Kent, A. D.
    JOURNAL OF APPLIED PHYSICS, 2014, 115 (17)
  • [2] Switching probability of all-perpendicular spin valve nanopillars
    Tzoufras, M.
    AIP ADVANCES, 2018, 8 (05)
  • [3] Dynamics of spin torque switching in all-perpendicular spin valve nanopillars
    Liu, H.
    Bedau, D.
    Sun, J. Z.
    Mangin, S.
    Fullerton, E. E.
    Katine, J. A.
    Kent, A. D.
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 358 : 233 - 258
  • [4] Temperature dependent nucleation, propagation, and annihilation of domain walls in all-perpendicular spin-valve nanopillars
    Gopman, D. B.
    Bedau, D.
    Mangin, S.
    Fullerton, E. E.
    Katine, J. A.
    Kent, A. D.
    JOURNAL OF APPLIED PHYSICS, 2014, 115 (11)
  • [5] Switching field distributions with spin transfer torques in perpendicularly magnetized spin-valve nanopillars
    Gopman, D. B.
    Bedau, D.
    Mangin, S.
    Fullerton, E. E.
    Katine, J. A.
    Kent, A. D.
    PHYSICAL REVIEW B, 2014, 89 (13):
  • [6] Spreading sequences for fast switching process in spin-valve nanopillars
    Carpentieri, Mario
    Ricci, Marco
    Burrascano, Pietro
    Torres, Luis
    APPLIED PHYSICS LETTERS, 2011, 98 (12)
  • [7] Asymmetric switching behavior in perpendicularly magnetized spin-valve nanopillars due to the polarizer dipole field
    Gopman, D. B.
    Bedau, D.
    Mangin, S.
    Lambert, C. H.
    Fullerton, E. E.
    Katine, J. A.
    Kent, A. D.
    APPLIED PHYSICS LETTERS, 2012, 100 (06)
  • [8] Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy
    Bedau, D.
    Liu, H.
    Bouzaglou, J. -J.
    Kent, A. D.
    Sun, J. Z.
    Katine, J. A.
    Fullerton, E. E.
    Mangin, S.
    APPLIED PHYSICS LETTERS, 2010, 96 (02)
  • [9] Current-driven microwave oscillations in current perpendicular-to-plane spin-valve nanopillars
    Mistral, Q.
    Kim, Joo-Von
    Devolder, T.
    Crozat, P.
    Chappert, C.
    Katine, J. A.
    Carey, M. J.
    Ito, K.
    APPLIED PHYSICS LETTERS, 2006, 88 (19)
  • [10] Spin-torque switching in Py/Cu/Py and Py/Cu/CoPt spin-valve nanopillars
    Consolo, G.
    Finocchio, G.
    Torres, L.
    Carpentieri, M.
    Lopez-Diaz, L.
    Azzerboni, B.
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 316 (02) : 492 - 495
12345