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

被引：51

作者：

Kihara, T. ^{[1
]}

Kohama, Y. ^{[1
]}

Hashimoto, Y. ^{[1
]}

Katsumoto, S. ^{[1
]}

Tokunaga, M. ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2013年 / 84卷 / 07期

关键词：

GADOLINIUM GALLIUM GARNET; TEMPERATURE-CHANGE; HEAT-CAPACITY; TRANSITION;

D O I：

10.1063/1.4811798

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 Gd3Ga5O12 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. (C) 2013 AIP Publishing LLC.

引用

页数：7

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