Magnetovolume effects in metamagnetic itinerant-electron systems and

Goto, Takashi; Bartashevich, M.I.

doi:10.1088/0953-8984/10/16/014

Cited by 25 publications

(15 citation statements)

References 28 publications

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“…(9) are shown for CoðS; SeÞ 2 ; UCoAl, U(Co,Fe)Al, YðCo; AlÞ 2 ; LuðCo; GaÞ 2 and LuðCo; AlÞ 2 : The present results of kC mv are found to be rather close to those estimated from measurements of the thermal expansion and the temperature dependence of the spontaneous magnetization [5] and the magnetization and magnetostriction curves [7,10]. However, it cannot be shown that the values of kC mv in the ferromagnetic state, after the MT takes place, and in the paramagnetic state, before the MT takes place, are different in YðCo; AlÞ 2 and LuðCo; GaÞ 2 [10]. This is probably due to the higher order terms in the volume magnetostriction energy.…”

supporting

confidence: 81%

Magneto-volume coupling constant in itinerant-electron metamagnets

Yamada

Goto

2004

Journal of Magnetism and Magnetic Materials

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supporting

confidence: 81%

Magneto-volume coupling constant in itinerant-electron metamagnets

Yamada

Goto

2004

Journal of Magnetism and Magnetic Materials

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“…Also, a strong pressure effect on χ has been observed in YCo 2 and some Y(Co 1 2 −x x M ) alloys [40,45,46]. In order to find the origin of pronounced volume and temperature effects on magnetic susceptibility in YCo 2 compound, the volume dependent electronic structure was calculated ab initio by employing the FP-LMTO method, within LSDA.…”

Section: Tico Ni 3 Al and Yco 2 Systemsmentioning

confidence: 99%

Magnetic-field-induced effects in the electronic structure of itinerant d- and f-metal systems

Grechnev

2009

Low Temperature Physics

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A paramagnetic response of transition metals and itinerant d-and f -metal compounds in an external magnetic field is studied by employing ab initio full-potential LMTO method in the framework of the local spin density approximation. Within this method the anisotropy of magnetic susceptibility in hexagonal close-packed transition metals is evaluated for the first time. This anisotropy is owing to the orbital Van Vleck-like paramagnetic susceptibility, which is revealed to be substantial in transition metal systems due to hybridization effects in electronic structure. It is demonstrated, that compounds TiCo, Ni 3 Al, YCo 2 , CeCo 2 , YNi 5 , LaNi 5 and CeNi 5 are strong paramagnets close to the quantum critical point. For these systems the Stoner approximation underestimates the spin susceptibility, whereas the calculated field-induced spin moments provided a good description of the large paramagnetic susceptibilities and magnetovolume effects. It is revealed, that itinerant description of hybridized f electrons produces magnetic properties of CeCo 2 , CeNi 5 , UAl 3 , UGa 3 , USi 3 and UGe 3 compounds in close agreement with experiment. In the uranium UX 3 compounds the strong spin-orbit coupling together with hybridization effects give rise to peculiar magnetic states, where the field-induced spin moments are antiparallel to the external field and the magnetic response is dominated by the orbital contribution.

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“…As a comparison, the C dd constant of the Laves phases Y(Co 1−x Al x ) 2 in the ferromagnetic state is 8 × 10 −3 ( B /Co) −2 [28]. The difference in C dd should be attributed to the difference in the band structure.…”

Section: Resultsmentioning

confidence: 93%