Photoacoustic and photopyroelectric investigation of the antiferromagnets CoO and Cr2O3 in the neighbourhood of the Neel Temperature

C. Glorieux; J. Caerels; J. Thoen

doi:doi:10.1051/jp4:1994763

Numéro		J. Phys. IV France Volume 04, Numéro C7, Juillet 1994 8th International Topical Meeting on Photoacoustic and Photothermal Phenomena 8 ITMP³ / 8éme conférence internationale de photoacoustique et photothermique


Page(s)		C7-267 - C7-270
DOI		https://doi.org/10.1051/jp4:1994763

8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP³ / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-267-C7-270
DOI: 10.1051/jp4:1994763

Photoacoustic and photopyroelectric investigation of the antiferromagnets CoO and Cr₂O₃ in the neighbourhood of the Neel Temperature

C. Glorieux, J. Caerels and J. Thoen

Laboratorium voor Akoestiek en Warmtegeleiding, Departement Natuurkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium

Abstract
The critical behaviour of the dynamic and static thermal properties are investigated in the neighbourhood of the Néel temperature of single crystal antiferromagnetic CoO and Cr₂O₃. Photoacoustic front and pyroelectric rear detection of front illumination induced temperature oscillations are used to determine critical exponents and amplitudes of the specific heat capacity anomaly. Simultaneously measured thermal conductivity data are also presented.