한국세라믹학회지 (Journal of the Korean Ceramic Society)
- 제35권11호
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- Pages.1148-1154
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- 1998
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- 1229-7801(pISSN)
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- 2234-0491(eISSN)
갈륨 K 흡수단의 저온 EXAFS를 이용한 PbO-Ga$_2$ O$_3$ 유리의 구조 해석
Structure Study of PbO-Ga$_2$ O$_3$ Glasses Using Ga K-edge EXAFS Taken at Cryogenic Temperature
- Choi, Yong-Gyu (Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute) ;
- Kim, Kyong-Hon (Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute) ;
- Chernov, Vladimir A (Siberian Synchrotron Radiation Center Budker Institute of Nuclear Physics) ;
- Heo, Jong (Non-Crystalline Materials Laboratory, Department of Materials Science and Engineering/School of Environmental Engineering, Pohang University of Science and Technology)
- 발행 : 1998.11.01
초록
Ga K-edge EXAFS spectra of PbO-Ga2O3 glasses were recorded at liquid nitrogen temperature and analyz-ed in order to quantitatively understand the medium-range-order arrangement around gallium in the glasses. The second peak was generated from a backscattering of the neighbor balliums and the Ga-Ga distance is ~3.13 A with Ga coordination number of ~2.7 Therefore GaO4 tetrahedra are connected through the cor-ner~sharing mode and form their own clusters made of the tetrahedra sharing more than 3 corners while some chains or rings are also present. These connection schemes of the GaO4 tetrahedra are believed to form the substantial part of the network structure.