Magnetocaloric effect and magnetic phase transition in Ho3Co

Jun Shen; Jian Feng Wu

doi:10.1063/1.3561146

Magnetocaloric effect and magnetic phase transition in Ho₃Co

Jun Shen^*, Jian Feng Wu

^*Corresponding author for this work

CAS - Technical Institute of Physics and Chemistry

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Magnetocaloric effect (MCE) and magnetic phase transition of Ho ₃Co compound have been investigated. The two successive magnetic transitions: spin-reorientation transition at T_SR = 8.5 K and antiferromagnetic (AFM)-paramagnetic transition at the Néel temperature T_N = 21 K are observed. The Ho₃Co compound undergoes a field-induced metamagnetic transition from AFM to ferromagnetic states below T_N, which leads to a large MCE. The maximal value of magnetic entropy change (δS_M) is found to be -14.5 J/kgK with a refrigerant capacity (RC) value of 440 J/kg around T_N for a field change of 0-5 T. The large δS_M as well as considerable RC in Ho₃Co is very useful for applying it to the magnetic refrigeration in low-temperature ranges.

Original language	English
Article number	07A931
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3561146
Publication status	Published - 1 Apr 2011
Externally published	Yes

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abstract = "Magnetocaloric effect (MCE) and magnetic phase transition of Ho 3Co compound have been investigated. The two successive magnetic transitions: spin-reorientation transition at TSR = 8.5 K and antiferromagnetic (AFM)-paramagnetic transition at the N{\'e}el temperature TN = 21 K are observed. The Ho3Co compound undergoes a field-induced metamagnetic transition from AFM to ferromagnetic states below TN, which leads to a large MCE. The maximal value of magnetic entropy change (δSM) is found to be -14.5 J/kgK with a refrigerant capacity (RC) value of 440 J/kg around TN for a field change of 0-5 T. The large δSM as well as considerable RC in Ho3Co is very useful for applying it to the magnetic refrigeration in low-temperature ranges.",

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N2 - Magnetocaloric effect (MCE) and magnetic phase transition of Ho 3Co compound have been investigated. The two successive magnetic transitions: spin-reorientation transition at TSR = 8.5 K and antiferromagnetic (AFM)-paramagnetic transition at the Néel temperature TN = 21 K are observed. The Ho3Co compound undergoes a field-induced metamagnetic transition from AFM to ferromagnetic states below TN, which leads to a large MCE. The maximal value of magnetic entropy change (δSM) is found to be -14.5 J/kgK with a refrigerant capacity (RC) value of 440 J/kg around TN for a field change of 0-5 T. The large δSM as well as considerable RC in Ho3Co is very useful for applying it to the magnetic refrigeration in low-temperature ranges.

AB - Magnetocaloric effect (MCE) and magnetic phase transition of Ho 3Co compound have been investigated. The two successive magnetic transitions: spin-reorientation transition at TSR = 8.5 K and antiferromagnetic (AFM)-paramagnetic transition at the Néel temperature TN = 21 K are observed. The Ho3Co compound undergoes a field-induced metamagnetic transition from AFM to ferromagnetic states below TN, which leads to a large MCE. The maximal value of magnetic entropy change (δSM) is found to be -14.5 J/kgK with a refrigerant capacity (RC) value of 440 J/kg around TN for a field change of 0-5 T. The large δSM as well as considerable RC in Ho3Co is very useful for applying it to the magnetic refrigeration in low-temperature ranges.

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Magnetocaloric effect and magnetic phase transition in Ho₃Co

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