Heat capacity of the frustrated magnetic pyrochlores Gd(2)Zr(2)O(7) and Gd(2)Hf(2)O(7)

Alice M Durand; Peter Klavins; L R Corruccini

doi:10.1088/0953-8984/20/23/235208

Heat capacity of the frustrated magnetic pyrochlores Gd(2)Zr(2)O(7) and Gd(2)Hf(2)O(7)

J Phys Condens Matter. 2008 Jun 11;20(23):235208. doi: 10.1088/0953-8984/20/23/235208. Epub 2008 Apr 30.

Authors

Alice M Durand¹, Peter Klavins, L R Corruccini

Affiliation

¹ Physics Department, University of California at Davis, Davis, CA 95616, USA.

PMID: 21694299
DOI: 10.1088/0953-8984/20/23/235208

Abstract

The heat capacities of Gd(2)Zr(2)O(7) and Gd(2)Hf(2)O(7) both show sharp peaks in the vicinity of 0.77 K, consistent with the existence of long range magnetic order. They are superimposed in both cases on broader maxima centered at approximately 1 K, presumably due to short range spin correlations. Both compounds exhibit antiferromagnetic interactions, with Weiss constants of approximately -7 K. Comparisons are made to earlier results for the isomorphic compounds Gd(2)Ti(2)O(7) and Gd(2)Sn(2)O(7).