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Optical and Magnetic Investigations of Some NiAs‐Type Transition Metal Compounds
Author(s) -
Neitzel U.,
Bärner K.
Publication year - 1985
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221290231
Subject(s) - condensed matter physics , ferromagnetism , reflectivity , transition metal , magnetic moment , derivative (finance) , type (biology) , logarithmic derivative , metal , chemistry , materials science , physics , metallurgy , optics , geology , mathematics , paleontology , catalysis , biochemistry , financial economics , pure mathematics , economics
The reflectivity and the logarithmic derivative of the reflectivity is measured as a function of quantum energy (1.3 eV < ħω < 4.7 eV) and temperature (10 K < T < 300 K) for several NiAs‐type compounds: NiAs, NiSb, MnAs, MnSb, Ni 0.95 Mn 0.05 As, Ni 0.8 Mn 0.2 As, and Ni 0.5 Mn 0.5 As. The optical constants are consistent with existing bandstructure calculations for the nonmagnetic compounds NiAs and NiSb. This is not so for the ferromagnetic compounds MnAs, MnSb, and for the mixed crystals; in particular, for the mixed crystals the magnetic susceptibility indicates that Mn builds up a local moment.