Magnetocaloric effect in as-quenched and annealed Fe91-xYxZr9(x = 0.5, 10) alloys

✍ Scribed by Kim, K. S. ;Kim, Y. S. ;Zidanic, J. ;Min, S. G. ;Yu, S. C.

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 341 KB
• Volume: 204
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200777103

✦ Synopsis

Abstract

The magnetization behaviours have been analyzed for as‐quenched and annealed Fe~91–x~Y~x~Zr~9~ (x = 0, 5, 10) alloys. Samples were prepared by arc melting the high‐purity elemental constituents under argon gas atmosphere and by single roller melt spinning. These alloys were annealed one hour at 500 °C. The magnetic properties of the samples were measured by VSM. The Curie temperature increases with increasing Y concentration (x = 0 to 10). Temperature dependence of the entropy variation ΔS~M~ was found to appear in the vicinity of the Curie temperature. The results show that annealed Fe~86~Y~5~Zr~9~ alloys have a greater magnetocaloric effect than that those in as‐quenched alloys. The value is ‐1.23 J/kg K at ΔH = 1.5 T for annealed alloy and ‐0.89 for as‐quenched alloy, respectively. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)