AN AC METHOD FOR MEASURING THE SPECIFIC-HEAT OF SMALL PROBES AND AN APPLICATION IN THE STUDY ON GD2O2SO4

Authors
KRATZ W KAHLE HG PAUL W
Citation
W. Kratz et al., AN AC METHOD FOR MEASURING THE SPECIFIC-HEAT OF SMALL PROBES AND AN APPLICATION IN THE STUDY ON GD2O2SO4, Journal of magnetism and magnetic materials, 161, 1996, pp. 249-254
Citations number
12
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
161
Year of publication
1996
Pages
249 - 254
Database
ISI
SICI code
0304-8853(1996)161:<249:AAMFMT>2.0.ZU;2-J
Abstract
A highly sensitive dynamical method is described which allows specific heat measurements on samples of small masses (below 1 mg) not only as a function of temperature but, in particular, also as a function of f ield. An ac current produces an oscillating temperature of the sample. From its amplitude and phase the specific heat can be calculated. The method is tested in a study on gadolinium oxisulphate Gd2O2SO4, to de termine the phase diagram in the vicinity of its Neel temperature.