Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
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Magnetostriction in Antiferromagnetic Systems

반강자성 물질의 자기변형

  • Kim, C.G. (Department of Physics, Pohang university of Science and Technology) ;
  • Kim, Beom-Hyun (Department of Physics, Pohang university of Science and Technology) ;
  • Min, B.I. (Department of Physics, Pohang university of Science and Technology)
  • 김창근 (포항공과대학교 물리학과) ;
  • 김범현 (포항공과대학교 물리학과) ;
  • 민병일 (포항공과대학교 물리학과)
  • Published : 2008.08.31
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Abstract

The phenomenon of magnetostriction occurs in magnetic systems when the temperature is changed or the external magnetic field is applied. It is known that the magnetostriction observed in rare-earth elements and compounds is well described by the crystal-field striction and the exchange striction. In this review paper, we discuss the standard theory for the magnetostriction which includes the crystal-field and the exchange interaction.

자기변형(magnetostriction) 현상은 외부 온도와 자기장이 변할 때 자성체의 모양이나 부피가 변하는 현상이다. 반강자성을 갖는 희토류 원소와 화합물에서의 관측되는 자기변형 현상은 결정장에 의한 결정장 변형(crystal-field striction)과 교환상호작용에 의한 교환 변형(exchange striction)으로 잘 설명할 수 있음이 알려져 있다. 이 해설 논문에서는 결정장과 교환 상호작용을 포함하는 자기변형 표준이론에 대하여 논의하고자 한다.

Keywords

References

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