Magnetic properties of the UNi1−Pt Ga solid solutions

Андреев, А.В.; Tomida, M; Homma, Yoshiya; Shiokawa, Y.; Sechovský, V.; Mushnikov, N. V.; Goto, T.

doi:10.1016/s0925-8388(02)00671-0

Cited by 3 publications

(1 citation statement)

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“…17 As the number of electrons in the d shell increases ͑which is similar to the T atom moving to the right of the periodic table͒, the U-T hybridization decreases and ferromagnetic interaction gains in strength. We had explained a large increase in T C , P , and eff values, on hydriding U͑Fe 0.3 Ni 0.7 ͒Al to U͑Fe 0.3 Ni 0.7 ͒AlH 0.8 , in terms of charge transfer from the H atom to the 3d band of transition metals.…”

Section: Magnetic Properties and 5f-3d Hybridizationmentioning

confidence: 99%

Hydride phases, structure, and magnetic properties of theUNiAlHysystem

et al. 2001

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The hydriding behavior of the heavy fermion compound UNiAl has been investigated. A range of hydride compositions with orthorhombic structure ͑space group Pnma͒ has been stabilized. As a result, a different nomenclature for the UNiAlH y hydride phases is proposed. X-ray diffraction and magnetic studies are reported on three compositions in this range of hydrides, viz., yϭ0.06, 0.14, and 0.58. All these compositions do not show magnetic ordering down to 2 K, though weak ferromagnetic correlations are apparent in their magnetic studies. Low effective moment values on uranium atoms in these cases, appreciably below the value for itinerant antiferromagnetic UNiAl, indicate increased itinerant character of U 5 f electrons. We also report magnetization studies on hexagonal UNiAlH y (yϭ0.7). It shows ferromagnetic ordering below 87 K. This means that in the hexagonal hydride phases, the nature of magnetic ordering changes from antiferromagnetic (yϭ0) to ferromagnetic (yϭ0.7) and again back to antiferromagnetic for yϭ2.3. It is shown that the moment on the uranium atoms in the hexagonal hydride phases ͑yХ0.7 and 2.0-2.5͒ is close to the free-ion local moment value.

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Section: Magnetic Properties and 5f-3d Hybridizationmentioning

confidence: 99%