Journal of the Mineralogical Society of Korea (한국광물학회지)

The Mineralogical Society of Korea (한국광물학회)
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Compression Study on a Synthetic Goethite

합성 괴타이트에 대한 압축실험

  • Kim, Young-Ho (Department of Earth and Environment Science, and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Hwang, Gil-Chan (Department of Earth and Environment Science, and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Kim, Soon-Oh (Department of Earth and Environment Science, and Research Institute of Natural Sciences, Gyeongsang National University)
  • 김영호 (경상대학교 지구환경과학과 및 기초과학연구소) ;
  • 황길찬 (경상대학교 지구환경과학과 및 기초과학연구소) ;
  • 김순오 (경상대학교 지구환경과학과 및 기초과학연구소)
  • Published : 2009.12.30
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Abstract

High pressure x-ray diffraction study was performed on a synthetic FeOOH-goethite to check out its compressibility at room temperature. Angular dispersive x-ray diffraction method was employed using a symmetrical diamond anvil cell with synchrotron radiation. Bulk modulus was determined to be 222.8 GPa under assumption of $K_{T'}$ of 4.0. This value is too high comparing with the previously published values from natural samples. It has been discussed the possible causes to incur its high bulk modulus value according to the production conditions.

합성 FeOOH-괴타이트 분말시료에 대한 고압실험을 압축성을 검증하기 위해 상온에서 시행하였다. 방사광이용 실험장치에서 대칭다이아몬드 앤빌기기를 각분산회절방법으로 배열하여 실험을 하였다. $K_{T'}$ 값을 4.0으로 가정하였을 때, 체적탄성률은 222.8 GPa로 계산되었다. 이 값은 천연산 괴타이트로부터 얻은 기존의 값과 비교하여 볼 때 매우 높은 값으로, 시료의 생성조건에 따라 나타나는 물질의 압력에 대한 이상 거동에 대해 고찰하였다.

Keywords

References

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