Magnetic properties of the ordered VPt3 alloy. I. — Ferromagnetic behaviour

Jesser, R.; Bieber, A.; Kuentzler, R.

doi:10.1051/jphys:019810042080115700

Cited by 23 publications

(3 citation statements)

References 26 publications

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“…We are not aware of any calculation prior to ours for the Pt magnetic moments in the TiAl 3 structure of VPt 3 . Experimentally, Jesser et al have measured the total spin moment per unit cell and found a value of 0.1 µ B for both structures [14]. In the case of TiAl 3 structure the total calculated spin moment is 0.20 µ B , i.e.…”

Section: Vptmentioning

confidence: 97%

“…The VPt 3 compound crystallizes either in the metastable AuCu 3 structure (L1 and c/a = 2.027 for the tetragonal TiAl 3 structure [22], and a = 3.87 Å for VPt 3 in the cubic AuCu 3 structure [14] (see figure 2). The two structures have the same type of nearest neighbour, so their relative stability is determined by the next-nearest-and further-neighbour arrangement.…”

Section: Computation Detailsmentioning

confidence: 99%

“…The entire V-Pt system is known to be paramagnetic with the exception of VPt 3 which is ferromagnetic [13], with a Curie temperature much larger than that of the VAu 4 compound (T C = 210-240 K) [14]. Jesser et al showed that the VPt 3 compound can crystallize in two structures [14], the metastable AuCu 3 structure and the TiAl 3 ground-state structure. Kawakami and Goto performed NMR experiments for VPt 3 in the AuCu 3 structure and estimated the spin magnetic moments [15].…”

Section: Introductionmentioning

confidence: 99%

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Tuning the orbital moment in transition metal compounds using ligand states

Galanakis

Alouani

Oppeneer

et al. 2001

J. Phys.: Condens. Matter

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The influence of ligand states on the orbital magnetism of a 3d atom in a ferromagnetic compound has been studied using an ab initio technique. It is shown, using VAu4, MnAu4 and VPt3 as examples, that the large spin-orbit coupling of the 5d atom is responsible for the reversal of the coupling between the V(Mn) spin and orbital moments with respect to that for similar compounds. The VAu4 compound has a large magneto-crystalline anisotropy (MCA) and the spin-up states are completely occupied, which makes its MCA proportional to the orbital moment anisotropy as stated by Bruno's perturbative formula (Bruno P 1989 Phys. Rev. B 39 865). For the latter compound it is also shown that a partial substitution of copper for gold decreases the vanadium orbital moment and hence the MCA. The ligand state effects on the orbital moment together with this alloying procedure may initiate a new approach in the search for ultra-soft magnetic materials.

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Section: Vptmentioning

confidence: 97%

Section: Computation Detailsmentioning

confidence: 99%