Raman and i.r.-emission studies of some tungstate- and molybdate- containing melts |
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| Affiliation: | 1. Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand;2. Center of Excellence in Glass Technology and Materials science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand;3. Applied Physics, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok 10300, Thailand;1. School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, PR China;2. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Science, Beijing 100190, PR China;1. Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein, ZA 9300, South Africa;2. Department of Physics, Faculty of Education, University of Khartoum, P.O. Box 321, 11115 Omdurman, Sudan;3. Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India;1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Guangxi Universities Key Laboratory of Non-ferrous Metal Oxide Electronic Functional Materials and Devices, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China;2. College of Information Science and Engineering, Guilin University of Technology, Guilin 541004, China;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;2. Institute of Electronic and Information Engineering, University of Electronic Science and Technology of China, Dongguan 518105, China |
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| Abstract: | Melts containing tungstate and molybdate ions have been studied using Raman and i.r.- emission spectroscopy. Vibrational data obtained for Mo16O42−- and Mo18O42− containing melts firmly support a tetrahedral structure for MoO42− (and by implication for WO42− as well) and establish the correct assignment of ν4 and ν4 for this species. Acidification of these MoO42− and WO42− melts by addition of the corresponding metal trioxides produced no significant change in the observed spectra, although significant solubilities of the trioxides in the WO42− and MoO42− melts were observed. |
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