Dual behavior of antiferromagnetic uncompensated spins in NiFe/IrMn exchange biased bilayers

被引：49
|
作者：
Mishra, S. K. [1 ]
Radu, F. [1 ]
Valencia, S. [1 ]
Schmitz, D. [1 ]
Schierle, E. [1 ]
Duerr, H. A. [1 ]
Eberhardt, W. [1 ]
机构：
[1] Helmholtz Zentrum Mat & Energie, D-12489 Berlin, Germany
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 21期
关键词：
LAYERED MAGNETIC-STRUCTURES; ANISOTROPY; FILMS; MAGNETORESISTANCE; DEPENDENCE;
D O I：
10.1103/PhysRevB.81.212404
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a comprehensive study of the exchange bias effect in a model system. Through numerical analysis of the exchange bias and coercive fields as a function of the antiferromagnetic layer thickness we deduce the absolute value of the averaged anisotropy constant of the antiferromagnet. We show that the anisotropy of IrMn exhibits a finite size effect as a function of thickness. The interfacial spin disorder involved in the data analysis is further supported by the observation of the dual behavior of the interfacial uncompensated spins. Utilizing soft x-ray resonant magnetic reflectometry we have observed that the antiferromagnetic uncompensated spins are dominantly frozen with nearly no rotating spins due to the chemical intermixing, which correlates to the inferred mechanism for the exchange bias.
引用
收藏
页数：4
相关论文
共 50 条
  • [41] FMR investigations of exchange biased NiFe/IrMn/NiFe trilayers with high and low Ni relative content
    Dzhun, Irina O.
    Babaytsev, Georgy V.
    Chechenin, Nikolay G.
    Gritsenko, Christina A.
    Rodionova, Valeria V.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2019, 470 : 151 - 155
  • [42] Rotational anisotropy in exchange-biased NiFe/FeMn bilayers
    Hwang, DG
    [J]. MATERIALS SCIENCE-POLAND, 2003, 21 (01): : 39 - 45
  • [43] Domain processes in the magnetization reversal of exchange-biased IrMn/CoFe bilayers
    Gogol, P
    Chapman, JN
    Gillies, MF
    Vanhelmont, FWM
    [J]. JOURNAL OF APPLIED PHYSICS, 2002, 92 (03) : 1458 - 1465
  • [44] Dependence of the exchange bias on the thickness of antiferromagnetic layer in the trilayered NiFe/IrMn/NiFe thin-films
    Gritsenko, Ch.
    Dzhun, I.
    Chechenin, N.
    Babaytsev, G.
    Rodionova, V.
    [J]. 20TH INTERNATIONAL CONFERENCE ON MAGNETISM, ICM 2015, 2015, 75 : 1066 - 1071
  • [45] Spin-flop coupling and rearrangement of bulk antiferromagnetic spins in epitaxial exchange-biased Fe/MnPd/Fe/IrMn multilayers
    Zhang, Wei
    Krishnan, Kannan M.
    [J]. PHYSICAL REVIEW B, 2012, 86 (05)
  • [46] Setting temperature effect in polycrystalline exchange-biased IrMn/CoFe bilayers
    Fernandez-Outon, L. E.
    Araujo Filho, M. S.
    Araujo, R. E.
    Ardisson, J. D.
    Macedo, W. A. A.
    [J]. JOURNAL OF APPLIED PHYSICS, 2013, 113 (17)
  • [47] Thickness effect on the easy axis distribution in exchange biased Co/IrMn bilayers
    Tarazona, H. S.
    Tafur, M.
    Quispe-Marcatoma, J.
    Landauro, C., V
    Baggio-Saitovitch, E.
    Schmool, D. S.
    [J]. PHYSICA B-CONDENSED MATTER, 2019, 567 : 11 - 16
  • [48] Isotropic effects in exchange-biased ferromagnetic/antiferromagnetic bilayers
    Blachowicz, T.
    [J]. MATERIALS SCIENCE-POLAND, 2008, 26 (01): : 21 - 26
  • [49] Direct manipulation of the uncompensated antiferromagnetic spins in exchange coupled system by GeV ion irradiation
    Paul, Amitesh
    Paul, N.
    Trautmann, C.
    Mattauch, S.
    Jutimoosik, Jaru
    Yimnirun, Rattikorn
    Rujirawat, Saroj
    Hoepfner, Britta
    Lauermann, Iver
    Lux-Steiner, M.
    Boeni, P.
    [J]. APPLIED PHYSICS LETTERS, 2012, 100 (25)
  • [50] Thickness dependence of exchange anisotropy in NiFe/IrMn bilayers studied by Planar Hall Effect
    Thanh, N. T.
    Chun, M. G.
    Ha, N. D.
    Kim, K. Y.
    Kim, C. O.
    Kim, C. G.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 305 (02) : 432 - 435
12345