Affiliation:
1. North China Electric Power University
Abstract
Ternary compound LaCo2Ge2 was synthesized and characterized by means of XRD, magnetic and electrical measurements. Rietveld structure refinements of powder XRD patterns confirm that LaCo2Ge2 compound crystallizes with a body-centered tetragonal structure of ThCr2Si2-type (space group I4/mmm) with the unit lattice parameters a=4.105(6) Å and c=10.264(7) Å. Nd, Co and Ge occupy 2a, 4d and 4e crystal positions, respectively. Magnetism measurements show that LaCo2Ge2 is nearly temperature-impendent Pauli paramagnetic down to 100 K, whereas orders diamagnetic at elevated temperatures. The (T) measurement showed that is 0.34625 and a positive temperature coefficient for LaCo2Ge2 is equal to 0.82178, indicating that LaCo2Ge2 exhibits typical semimetallic.
Publisher
Trans Tech Publications, Ltd.
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