Heat Capacity in Magnetic and Electric Fields Near the Ferroelectric Transition in Tri-Glycine Sulfate

Simple item page
dc.creatorLashley, J. C.
dc.creatorOpeil, C. P.
dc.creatorFinlayson, T. R.
dc.creatorFisher, R. A.
dc.creatorHur, N.
dc.creatorHundley, M. F.
dc.creatorMihaila, B.
dc.creatorSmith, J. L.
dc.date2007-01-04
dc.date.accessioned2026-07-07T11:21:28Z
dc.date.available2026-07-07T11:21:28Z
dc.descriptionSpecific-heat measurements are reported near the Curie temperature ($T_C$~= 320 K) on tri-glycine sulfate. Measurements were made on crystals whose surfaces were either non-grounded or short-circuited, and were carried out in magnetic fields up to 9 T and electric fields up to 220 V/cm. In non-grounded crystals we find that the shape of the specific-heat anomaly near $T_C$ is thermally broadened. However, the anomaly changes to the characteristic sharp $λ$-shape expected for a continuous transition with the application of either a magnetic field or an electric field. In crystals whose surfaces were short-circuited with gold, the characteristic $λ$-shape appeared in the absence of an external field. This effect enabled a determination of the critical exponents above and below $T_C$, and may be understood on the basis that the surface charge originating from the pyroelectric coefficient, $dP/dT$, behaves as if shorted by external magnetic or electric fields.
dc.description4 Pages, 4 Figures. To Appear in Applied Physics Letters_ January 2007
dc.identifierhttps://arxiv.org/abs/cond-mat/0701061
dc.identifierhttp://arxiv.org/abs/cond-mat/0701061
dc.identifierAppl.Phys.Lett.90:052910,2007
dc.identifierdoi:10.1063/1.2435333
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194272
dc.subjectStatistical Mechanics
dc.subjectOther Condensed Matter
dc.titleHeat Capacity in Magnetic and Electric Fields Near the Ferroelectric Transition in Tri-Glycine Sulfate
dc.typetext

Files

Collections

arXiv