Self-magnetic compensation and shifted hysteresis loops in ferromagnetic samarium systems

Article

关键词: EXCHANGE BIAS;    INTERMETALLIC COMPOUNDS;    KNIGHT SHIFT;    CRYSTAL;    MOMENT;    SM;    ALUMINUM;    REVERSAL;    ALLOYS;    FIELDS;   

DOI  :  10.1103/PhysRevB.82.144411

来源: SCIE

【 摘 要 】

For Sm(3+) ions in a vast majority of metallic systems, the following interesting scenario has been conjured up for long, namely, a magnetic lattice of tiny self- (spin-orbital) compensated 4f-moments exchange coupled (and phase reversed) to the polarization in the conduction band. We report here the identification of a selfcompensation behavior in a variety of ferromagnetic Sm intermetallics via the fingerprint of a shift in the magnetic hysteresis (M-H) loop from the origin. Such an attribute, designated as exchange bias in the context of ferromagnetic/antiferromagnetic multilayers, accords these compounds a potential for niche applications in spintronics. We also present results on magnetic compensation behavior on small Gd doping (2.5 at. %) in one of the Sm ferromagnets (viz., SmCu(4)Pd). The doped system responds like a pseudoferrimagnet and it displays a characteristic left-shifted linear M-H plot for an antiferromagnet.

【 授权许可】

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