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Anisotropic Electrical, Magnetic, and Thermal Properties of In 3 Ni 2 Intermetallic Catalyst
Author(s) -
Krnel Mitja,
Koželj Primož,
Vrtnik Stanislav,
Jelen Andreja,
Wencka Magdalena,
Gille Peter,
Dolinšek Janez
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000035
Subject(s) - intermetallic , condensed matter physics , materials science , anisotropy , electrical resistivity and conductivity , seebeck coefficient , magnetoresistance , diamagnetism , thermal conductivity , magnetic field , metallurgy , physics , composite material , optics , alloy , quantum mechanics
We present the anisotropic electrical and thermal transport coefficients (electrical resistivity, magnetoresistance, thermoelectric power, thermal conductivity), the magnetic properties, the specific heat and the electronic density of states of a monocrystalline In 3 Ni 2 intermetallic compound, representing a precious‐metal‐free (and noble‐metal‐free) intermetallic catalyst for the selective hydrogenation of α,β‐unsaturated aldehydes. The investigated physical parameters were determined along three orthogonal crystal‐symmetry directions of the trigonal structure, the twofold axis, the 3 axis and within the mirror plane. All the investigated tensorial and vectorial quantities show the same anisotropy, with the quantities being isotropic for the twofold direction and in the mirror plane, whereas there is small, though still significant anisotropy to the 3 direction. The In 3 Ni 2 crystal conducts the electricity and heat somewhat less efficiently along the 3 direction than along the twofold direction and in the mirror plane, but the differences are not large, of about 20 %. In 3 Ni 2 is a diamagnetic intermetallic compound, with a presumably simple Fermi surface and electrons as the majority charge carriers.