Effect of Crystal Fields on the Magnetic Properties of Samarium Intermetallic Compounds

Wijn, H. W. de; Diepen, A. M. van; Buschow, K.H.J.

doi:10.1103/physrevb.7.524

Cited by 94 publications

(41 citation statements)

References 28 publications

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“…To eliminate Hex, we substitute the molecular field 2p,H,x = -7ff(Sz>av (23) to obtain the final expressions for Knight shift and susceptibility in the paramagnetic region [2].…”

Section: Perturbation Approach In the Paramagnetic Reyionmentioning

confidence: 99%

Samarium in Crystal Fields, a Case of Strong J‐Mixing

Wijn¹,

Diepen

Buschow

1976

Physica Status Solidi (b)

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“…To eliminate Hex, we substitute the molecular field 2p,H,x = -7ff(Sz>av (23) to obtain the final expressions for Knight shift and susceptibility in the paramagnetic region [2].…”

Section: Perturbation Approach In the Paramagnetic Reyionmentioning

confidence: 99%

Samarium in Crystal Fields, a Case of Strong J‐Mixing

Wijn¹,

Diepen

Buschow

1976

Physica Status Solidi (b)

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“…In a crystalline environment, the degeneracy of the ground-J multiplet is partially lifted, and in the specific case of the Sm 3+ ions, the crystalline electric field and the exchange field can induce admixture of the higher J-multiplets (J = 7/2, 9/2) into the ground J-multiplet (J = 5/2) 2-5 . Such circumstances not only substantially reduce the magnetic moment/Sm 3+ ion [6][7][8][9] , but, also make the orbital and spin contributions undergo different thermal evolutions 4,5,8,10,11 .…”

Section: Introductionmentioning

confidence: 99%

“…White and Van Vleck's work was extended further in 1970s (see, e.g., our Refs. [4][5][6][7] by adding the role of crystalline electric fields to the admixture effects, and it was calculated 6,7 that the saturation magnetic moment at Sm 3+ ion could indeed vanish, with opposing orbital and spin contributions cancelling out each other, under some parametric conditions involving the crystalline electric fields and the exchange field. There were no very clear experimental elucidations of the said near cancellation.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2010

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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 4 f -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 atomic ) in one of the Sm ferromagnets (viz. SmCu 4 Pd). The doped system responds like a pseudo-ferrimagnet and it displays a characteristic left-shifted linear M-H plot for an antiferromagnet.

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“…It appeared, however, that at any tempersuch as the temperature dependence of the Knight shift ature the experimental results for the anisotropy could and the magnetic susceptibility, the saturation moment well be described by K 1 alone, with neglect of the higherand direction of the easy axis in magnetically ordered order anisotropy constants. We will therefore truncate compounds, the sign of the conduction electron spin equation (1) to F K1 sin 2 0 in the further discussion. polarization, and the neutron magnetic form factor, The experimental data for K 1 as a function of the All these aspects have been treated extensively in temperature, as taken fr~mthe literature, 6'7 are reproprevious papers.'…”

mentioning

confidence: 99%