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Tuning exchange bias through zero field cooling from different remanent states above blocking temperature in Ni 50 Mn 36 Sb 14 alloy
Author(s) -
Wang R. L.,
Xu L. S.,
Sun Z. G.,
Marchenkov V. V.,
Xiao H. B.,
Xu L. F.,
Huang J. C. A.,
Yang C. P.
Publication year - 2012
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201206355
Subject(s) - condensed matter physics , hysteresis , alloy , ferromagnetism , field (mathematics) , exchange bias , materials science , blocking (statistics) , remanence , magnetization , metallurgy , physics , magnetic field , statistics , pure mathematics , mathematics , magnetic anisotropy , quantum mechanics
Changing remanent states above blocking temperature ( T B ) in Ni 50 Mn 36 Sb 14 alloy has been proven to be an effective way of tuning the value and sign of exchange bias (EB) field. The hysteresis loops at 5 K exhibit double shifted shape, indicating that there are two opposite EB signs resulting from an imprint of domain pattern of ferromagnetic (FM) regions into anti‐ferromagetic (AFM) ones during cooling. All the results demonstrate that the interfacial spin configuration plays a crucial role on the origin of EB, while the high cooling field not only induces a single FM domain state above T B but also tunes the fractions of FM and AFM interactions through martensitic transition. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)