Effective Field Based on the Exchange Interaction in Gd3Ga5O12 under Low and Moderate Magnetic Field at Low Temperature

doi:10.1088/0256-307X/31/5/057501

Chin. Phys. Lett.

2014, Vol. 31

Issue (05): 057501 DOI: 10.1088/0256-307X/31/5/057501

CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES

Effective Field Based on the Exchange Interaction in Gd₃Ga₅O₁₂ under Low and Moderate Magnetic Field at Low Temperature

HU Feng, ZHANG Guo-Ying^**, HUANG Yi-Jia, XIA Wang-Suo

Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008

Cite this article:

HU Feng, ZHANG Guo-Ying, HUANG Yi-Jia et al 2014 Chin. Phys. Lett. 31 057501

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Abstract The roles of the exchange interaction between different magnetic ions in the gadolinium gallium garnet Gd₃Ga₅O₁₂ are systematically investigated. The effective field based on the exchange interaction is expressed as functions of the temperature T and applied field H_e. Furthermore, the effects of T and H_e on the magnetic moment and the entropy of Gd₃Ga₅O₁₂ are studied in the ranges of 0<H_e<9 T and 3<T<40 K. The computational results are consistent with the experimental data. Our study reveals that the applied field and temperature have important influences on the exchange interaction of Gd₃Ga₅O₁₂ at low temperature.

Published: 24 April 2014

PACS:

75.30.Sg

(Magnetocaloric effect, magnetic cooling)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/5/057501 OR https://cpl.iphy.ac.cn/Y2014/V31/I05/057501

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	HU Feng
	ZHANG Guo-Ying
	HUANG Yi-Jia
	XIA Wang-Suo

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