Magnetocaloric Effect and Critical Behavior in Amorphous Ribbons Gd54Ho6Co25Al14Si

Autor:	Tangfu Feng, Fang Wang, Renbing Sun, Jin-Zhi Wang, Sheng Yu
Rok vydání:	2015
Předmět:	Nuclear magnetic resonance Materials science Phase transition temperature Condensed matter physics Magnetic refrigeration Curie temperature Electrical and Electronic Engineering Electronic Optical and Magnetic Materials Amorphous solid
Zdroj:	IEEE Transactions on Magnetics. 51:1-4
ISSN:	1941-0069 0018-9464
Popis:	Magnetocaloric effect and critical behavior of amorphous ribbons Gd54Ho6Co25Al14Si were investigated in this paper. Samples were fabricated by a single-roller melt-spinning method at a spinning rate of 20 and 60 m/s. The Curie temperature is 120 K for both samples. A broader phase transition temperature range, however, was found for the sample fabricated at 60 m/s. It was attributed to its higher local disordered structure due to its faster quenching speed. The peak of the magnetic entropy change $\Delta S^{\textrm {PK}}_{M}$ is 11.01 $\text{J}\,\cdot \,$ kg $^{-1}\cdot \text{K}^{-1}$ and its full-width of the half-maximum is $\sim 90$ K at a field change of 0–5 T, which results in a large refrigerant capacity ( $\sim 990$ J $\cdot $ kg $^{-1}$ ).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::51ee52a59bc0dfd2cc6fbe22c8129a3c https://doi.org/10.1109/tmag.2015.2437367 Zobrazit plný text záznamu