Complex Calorimeter with AC- and Relaxation-Mode Operation
- 1 April 1993
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 32 (4R)
- https://doi.org/10.1143/jjap.32.1846
Abstract
A complex calorimeter has been developed. This calorimeter, which can be operated both in the ac mode and the relaxation mode using the same sample cell and the same apparatus settings, uses only a small amount (30-50 mg) of sample. An application to measurements in the vicinity of the antiferroelectric phase transitions in the liquid crystal MHPOBC(4-(1-methylheptyloxycarbonyl)-phenyl 4'-octyloxybiphenyl-4-carboxylate) is demonstrated. It is shown that the present calorimeter, when operated in the relaxation mode, enables detection of the latent heat with a resolution of 0.002 J/g.Keywords
This publication has 6 references indexed in Scilit:
- Stability of Antiferroelectricity and Causes for its Appearance in SmCα * and SmCA * Phases of a Chiral Smectic Liquid Crystal, MHPOBCJapanese Journal of Applied Physics, 1991
- Novel Phases Exhibiting Tristable SwitchingJapanese Journal of Applied Physics, 1989
- High-resolution ac calorimetry and critical behavior at phase transitionsThermochimica Acta, 1985
- Heat Capacity Measurements on Small Samples at Low TemperaturesReview of Scientific Instruments, 1972
- First-Order Transition in Chromium at the Néel TemperaturePhysical Review Letters, 1971
- Steady-State, ac-Temperature CalorimetryPhysical Review B, 1968