ChemInform Abstract: Magnetic and Moessbauer Spectral Properties of the Compound Nd6Fe13Au.
Abstract
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ChemInform Abstract
Reinvestigation of the magnetic properties of Nd6Fe13Au, prepared by arc melting and crystallizing in the tetragonal Nd6Fe13Si structure type, shows the occurrence of magnetic ordering at temp. much above room temp. (TN = 408 K). The small net moment at low temp. is due to mutual compensating contributions of magnetic sublattices. As revealed from high-field measurements at 4.2 K and the Moessbauer spectra, the average magnetic moment of Fe of 1.9 μB is much higher than in RFe2 compounds (1.5 μB). The higher Fe moments lead to antiferromagnetic ordering (TN = 413 K) in Nd6Fe13Au as compared to ferromagnetic ordering (TC >600 K) in RFe2.
