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An EXAFS study of AgPO3 and AgBaP3O9
Institution:1. School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China;2. College of Engineering and Technology, Jilin Agricultural University, Changchun, 130118, PR China;3. College of Horticulture, Jilin Agricultural University, Changchun 130118, PR China;4. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;1. Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India;2. Department of Chemistry, Govt. VYT PG. Autonomous College, Durg 491001, Chhattisgarh, India;3. Central Mechanical Engineering Research Institute, M. G. Avenue, Durgapur 713209, India;1. Catalysis Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India;2. Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
Abstract:The local structure around silver atoms in the crystalline and glassy forms of AgBaP3O9 and AgPO3 has been investigated using Extended X-ray Absorption Fine Structure Spectroscopy (EXAFS). The results are reported at the silver K-edge. The structure of AgBaP3O9 is representative of isolated silver whereas silver pairs have been evidenced in crystalline AgPO3. The present investigation allows to detect the formation of Ag+-Ag+ pairs in both glasses. These data arc consistent with crystal chemistry of silver phosphates and the luminescent properties of these materials.
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