Journal of Magnetics

  • 제19권3호
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  • Pages.205-209
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  • 2014
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Magnetic and Structural Properties of MnBi1-xTix Alloys

  • Zhang, Suyin (Magnetism Key Laboratory of Zhejiang Province, China Jiliang University) ;
  • Zhang, Pengyue (Magnetism Key Laboratory of Zhejiang Province, China Jiliang University) ;
  • Jiang, HuanChang (Magnetism Key Laboratory of Zhejiang Province, China Jiliang University) ;
  • Shi, Yaojun (Magnetism Key Laboratory of Zhejiang Province, China Jiliang University) ;
  • Yu, Nengjun (Magnetism Key Laboratory of Zhejiang Province, China Jiliang University) ;
  • Ge, Hongliang (Magnetism Key Laboratory of Zhejiang Province, China Jiliang University)
  • 투고 : 2013.12.25
  • 심사 : 2014.06.11
  • 발행 : 2014.09.30
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초록

$MnBi_{1-x}Ti_x$ (x = 0, 0.4, 0.7, 1) alloys were prepared by arc-melting, followed by heat treatment. X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) were used to measure and investigate the phase structure and magnetic properties. The temperature dependent magnetization curves indicate that the phase transitions between LTP and HTP MnBi occur with heating or cooling in $MnBi_{1-x}Ti_x$ ($x{\leq}0.7$) samples. However, MnTi samples are in $Mn_2Ti$ single-phase, with very low magnetic properties. Furthermore, the coercivity exhibits a positive temperature coefficient. The results show that the optimal content of Ti for the coercivity of $MnBi_{1-x}Ti_x$ alloy is x = 0.4. For MnBi sample, the coercivity reaches a maximum value of 1.13 T at 550 K. However, the remanence and energy product show apparent decrease with the addition of Ti in $MnBi_{1-x}Ti_x$ alloys.

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