Electronic structure and electron-phonon coupling in the Ni-Zr system

Magnetic properties of metastableZr−NiandHf−Nialloys around the paramagnetic-ferromagnetic transition

“…Amamou et al 5 reported that the most Ni-rich compound in the Zr-Ni system, ZrNi 5 , remains Pauli paramagnetic down to at least 4.2 K. In line with this finding, Turek et al 6 found the absence of ferromagnetism for the crystalline ZrNi 5 phase by using electronic band-structure calculations and the same result was obtained for the amorphous ͑a͒ Zr 15 Ni 85 alloy as well. Pauli paramagnetism was deduced also for a nanocrystalline ͑n͒ Hf 11 Ni 89 alloy with the HfNi 5 structure.…”

Hyperfine Interactions at 181Ta in Hf2Ni7 and Zr2Ni7

“…Three members of this family are found, but their magnetic properties are scarcely known, and only a few studies are available in the literature. For example Amamou [6] showed that all compounds of the Zr-Ni system with exception of ZrNi 5 present a usual temperature-independent Pauli paramagnetism. According to this paper, the critical concentration for the appearance of magnetism in Zr-Ni compounds is around 83.3at.% Ni and, therefore only ZrNi 5 has been found to be a weak ferromagnet (Hf 2 Ni 7 and Zr 2 Ni 7 are assumed to be line compounds at 77.8 at% Ni).…”

Magnetic susceptibility contributions and electronic density of states in(Ti,Zr)100−x(Ni,Mankovsky1, Bakonyi2, Ebert3 2007Phys. Rev. B171110View full textAdd to dashboardCite

“…% Ni͒, the magnetic susceptibility is much larger with its roomtemperature value of expt ͑300 K͒ = 247ϫ 10 −6 emu/ mol. 21 For a nanocrystalline Hf 11 Ni 89 alloy with the HfNi 5 structure, corresponding to a higher Ni content, an even larger susceptibility, expt ͑300 K͒ = 360ϫ 10 −6 emu/ mol, was reported. 4 Both latter alloys remained, however, Pauli paramagnetic down to at least 5 K. 4,21,22 Nevertheless, the magnitude of the magnetic susceptibility of both alloys and the observed temperature dependence of the susceptibility of the ZrNi 5 compound 21 strongly resemble the behavior of exchange ͑Stoner͒ enhanced Pauli paramagnets such as Pd metal, 23 the latter having a room-temperature susceptibility of expt ͑300 K͒ = 552ϫ 10 −6 emu/ mol.…”

“…Amamou et al 21 reported magnetic susceptibility data for a large number of stoichiometric crystalline Zr m Ni n compounds. These are shown in Fig.…”