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

Kulkarni, P. D. ; Dhar, S. K. ; Provino, A. ; Manfrinetti, P. ; Grover, A. K. (2010) Self-magnetic compensation and shifted hysteresis loops in ferromagnetic samarium systems Physical Review B, 82 (14). 144411_1-144411_6. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v82/i14/e144411

Related URL: http://dx.doi.org/10.1103/PhysRevB.82.144411

Abstract

For Sm3+ 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 self-compensation 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., SmCu4Pd). The doped system responds like a pseudoferrimagnet and it displays a characteristic left-shifted linear M-H plot for an antiferromagnet.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:97265
Deposited On:31 Jan 2013 05:06
Last Modified:31 Jan 2013 05:06

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