Journal of Magnetics

  • 제21권1호
  • /
  • Pages.20-24
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  • 2016
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  • 1226-1750(pISSN)
  • /
  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Magnetic Properties of Helicobacter Pylori Ferritins Genetically Prepared Under Different Biomineralization Conditions

  • Son, K. (Department of Physics, Kookmin University) ;
  • Park, J.N. (Department of Physics, Kookmin University) ;
  • Yoon, Sungwon (Department of Physics, The Catholic University of Korea) ;
  • Suh, B.J. (Department of Physics, The Catholic University of Korea) ;
  • Cho, K.J. (Department of Life Sciences & Biotechnology, Korea University) ;
  • Kim, K.H. (Department of Biotechnology & Bioinformatics, Korea University) ;
  • Jang, Z.H. (Department of Physics, Kookmin University)
  • 투고 : 2015.12.20
  • 심사 : 2016.01.11
  • 발행 : 2016.03.31
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초록

Magnetic properties of bio-magnetic molecule ferritin have been investigated. Two ferritin samples were synthesized under different magnetic fields, 0 and 9.4 T, respectively. This work is focused on the influence of magnetic field on biomineralization process. While magnetization vs. temperature (M-T) data of both samples measured at 1000 Oe are almost identical except for low temperature region (T < 6 K), magnetization vs. field (M-H) data show noticeable difference. From an analysis of M-H data by using a modified Langevin function, we could extract the saturation magnetization $m_0$(T), the effective magnetic moment ${\mu}_{eff}$(T) and the linear susceptibility x(T). The difference between the samples is most prominent in the x(T), whereby the x(T) of the sample prepared at 9.4 T is 1.7 times bigger than that of the other. In addition, from hysteresis and relaxation measurements, we found the sample prepared at 9.4 T showed strikingly smaller coercivity and slower relaxation.

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참고문헌

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