Adiabatic measurements of magneto-caloric effects in pulsed high magnetic fields up to 55 T

T. Kihara, Y. Kohama, Y. Hashimoto, S. Katsumoto, M. Tokunaga

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29 Citations (Scopus)

Abstract

Magneto-caloric effects (MCEs) measurement system in adiabatic condition is proposed to investigate the thermodynamic properties in pulsed magnetic fields up to 55 T. With taking the advantage of the fast field-sweep rate in pulsed field, adiabatic measurements of MCEs were carried out at various temperatures. To obtain the prompt response of the thermometer in the pulsed field, a thin film thermometer is grown directly on the sample surfaces. The validity of the present setup was demonstrated in the wide temperature range through the measurements on Gd at about room temperature and on Gd3Ga 5O12 at low temperatures. The both results show reasonable agreement with the data reported earlier. By comparing the MCE data with the specific heat data, we could estimate the entropy as functions of magnetic field and temperature. The results demonstrate the possibility that our approach can trace the change in transition temperature caused by the external field.

Original languageEnglish
Article number074901
JournalReview of Scientific Instruments
Volume84
Issue number7
DOIs
Publication statusPublished - 2013 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation

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