High-field specific heats of A15 V3Si and Nb3Sn
Abstract
In order to further understand the anomalous behavior of the specific heat of Nb3Sn in an 18-T magnetic field discovered by Stewart, Cort, and Webb <article>[Phys. Rev. B 24, 3841 (1981)]</article>, we have performed specific-heat measurements on a different sample of Nb3Sn at lower fields both in the normal and mixed states, as well as measurement to 19 T on both transforming and nontransforming V3Si. The high-field data for V3Si indicate that this material behaves quite normally, and that γtrans<γnontrans, in agreement with a recent analysis by Junod and Muller <article>[Solid State Commun. 36, 721 (1980)]</article>. Nb3Sn, however, remains anomalous, with both the same "kink" in the normal-state field data as observed by Stewart, Cort, and Webb (although at a slightly higher temperature) and unusual mixed-state behavior. The mixed-state specific heat of the V3Si samples is as expected, based on earlier work on the mixed-state specific heat of V and Nb.
- Publication:
-
Physical Review B
- Pub Date:
- April 1984
- DOI:
- 10.1103/PhysRevB.29.3908
- Bibcode:
- 1984PhRvB..29.3908S