Journal of the Mineralogical Society of Korea (한국광물학회지)

The Mineralogical Society of Korea (한국광물학회)
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Application of FTIR on the study of Natural, Synthetic and Irradiated Diamonds

FTIR을 이용한 천연, 합성, 방사선 처리된 다이아몬드의 분광학적 특성 연구

  • Kim, Jong-Rang (Department of Geology, Kyungpook National University) ;
  • Shon, Shoo-Hack (Department of Gemology, Daegu Polytechnic College) ;
  • Kim, Su-Hun (Department of Gemology, Daegu Polytechnic College) ;
  • Lim, Ye-Won (Department of Geology, Kyungpook National University) ;
  • Kim, Jong-Gun (Department of Gemology, Daegu Polytechnic College) ;
  • Kim, Jeong-Jin (Department of Earth & Environmental Sciences, Andong National University) ;
  • Jang, Yun-Deuk (Department of Geology, Kyungpook National University)
  • 김종랑 (경북대학교 자연과학대학 지질학과) ;
  • 손수학 (대구산업정보대학 보석감정학과) ;
  • 김수현 (대구산업정보대학 보석감정학과) ;
  • 임예원 (경북대학교 자연과학대학 지질학과) ;
  • 김종근 (대구산업정보대학 보석감정학과) ;
  • 김정진 (안동대학교 지구환경과학과) ;
  • 장윤득 (경북대학교 자연과학대학 지질학과)
  • Published : 2007.09.30
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Abstract

FTIR technique was applied to delineate spectroscopic characteristics of natural, synthetic and irradiated diamonds. All of the samples studied in this work show the absorption peaks, which are generally observed in diamond as well as the specific one related to N in diamonds. Synthetic diamond is characterized with both the peaks of 1344 and $1128 cm^{-1}$ related to HPHT synthesis and specific $1050 cm^{-1}$ peak only observed in synthetic diamond, which can be used to discriminate natural from synthetic. Type (natural blue diamond: IIb, electron beam Irradiated blue diamond: Type Ia) can be used to discriminate natural from irradiated diamond. The intensity of specific $1450 cm^{-1}$ peak observed only in irradiated diamond is related with irradiation and annealing process.

천연, 합성 그리고 전자빔 조사 처리된 다이아몬드간의 분광학적 특성을 연구하기 위해 FTIR 실험을 수행하였다. 실험에 사용된 모든 다이아몬드 시료에서 다이아몬드 고유 흡수 피크와 다이아몬드 내 질소와 관련된 흡수피크가 잘 나타났다. 합성 다이아몬드는 고온고압과 관련된 $1344 cm^{-1}$와 $1128 cm^{-1}$ 흡수피크를 보여주며 합성 다이아몬드에서만 나타나는 $1050 cm^{-1}$ 흡수피크를 보여 천연 다이아몬드와 잘 구분이 된다. 전자빔 조사에 의한 청색 다이아몬드와 붕소함량에 의한 청색 다이아몬드는 Type (천연 : Type IIb, 전자빔 처리 : Type Ia)으로 구별이 된다. 그러나 방사선 조사된 다이아몬드에서 일반적으로 나타나는 $1450 cm^{-1}$ 흡수피크가 미약한 것은 방사선의 종류, 조사량과 어넬링 과정과 관련이 있는 것으로 사료된다.

Keywords

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