Journal of Magnetics

  • 제10권4호
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  • Pages.142-144
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  • 2005
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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The Large Magnetocaloric Effect in Amorphous Fe80-xMnxZr10 (x = 4,6,8,10) Alloys

  • Moon, Y.M. (Department of Physics, Chungbuk National University) ;
  • Min, S.G (Department of Physics, Chungbuk National University) ;
  • Kim, K.S. (Department of Physics, Chungbuk National University) ;
  • Yu, S.C. (Department of Physics, Chungbuk National University) ;
  • Kim, Y.C. (Division of Materials Science and Engineering, Korea Institute of Science and Technology) ;
  • Kim, K.Y. (Division of Materials Science and Engineering, Korea Institute of Science and Technology)
  • 발행 : 2005.12.01
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초록

The Magnetization behaviour has been measured for amorphous $Fe_{80-x}Mn_xZr_{10}$ (x = 4,6,8,10) alloys. The Curie temperature decreased from 236 K to 195 K with increasing Mn concentration (x = 4 to x = 10). The magnetization measurements were conducted at temperatures above the Curie temperature in the paramagnetic region. In all samples, the magnetic properties showed superparamagnetic behavior above $T_c$ where the mean magnetic moment of the superparamagnetic spin clusters decreased with increasing temperature. A large magnetic entropy change, ${\Delta}S_M$, which is calculated from H vs M curves associated with the ferromagnetic-paramagnetic transitions in amorphous, has been observed. With Mn concentration increasing, ${\Delta}S_M$ decreases 1.04, 0.95, 0.87 J/kg K at 222, 210, 195 K (the Curie temperature), respectively.

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참고문헌

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피인용 문헌

  1. Magnetic properties and magnetocaloric effect in Fe90-x Sn x Zr10 alloy ribbons vol.66, pp.8, 2015, https://doi.org/10.3938/jkps.66.1247
  2. Large Magnetocaloric Effect in Fe-B-Mn-Zr-Nb Amorphous Alloys Near Room Temperature vol.29, pp.7, 2016, https://doi.org/10.1007/s10948-016-3464-8