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High pressure phase transition and elastic properties of cerium chalcogenides and pnictides
Affiliation:1. Laboratory of Condensed Matter Physics, Department of Physics, Institute of Physics and Electronics, University of Bhopal, Bhopal 462026, India;2. Laboratory of Pressure Standard, National Physical Laboratory, Dr K.S. Krishnan Road, New Delhi 110012, India;3. Department of Physics, Faculty of Science, MS University of Baroda, Vadodara 390 002, India;1. Benemérita Universidad Autónoma de Puebla, Instituto de Física “Ing Luis Rivera Terrazas”, Apartado Postal J-48, Puebla, 72570, Mexico;2. Centro de Nanociencias y Nanotecnologia, Universidad Nacional Autónoma de México, Apartado Postal 14, Ensenada, Baja California, 22800, Mexico;3. Facultad de Ciencias Fisico Matematicas, Universidad Autonoma de Coahuila, Camporredondo, 25000, Saltillo, Coah, Mexico;4. Instituto Tecnológico Superior de Zacapoaxtla, Carretera a Acuaco Zacapoaxtla Kilómetro 8, Totoltepec, 73680, Zacapoaxtla, Pue., Mexico;1. Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense, Madrid 28040, Spain;2. R D Foundation Group of Institutions, NH-58, Kadrabad, Modinagar, Ghaziabad, India;3. Indian Spectroscopy Society, KC 68/1, Old Kavinagar, Ghaziabad 201 002, India;4. University of Würzburg, Institute for Physical and Theoretical Chemistry, Am Hubland, D-97074 Würzburg, Germany;5. University of Duisburg-Essen, Faculty of Chemistry, Universitätsstr. 5, D-45141 Essen, Germany;1. Variable Energy Cyclotron Centre, 1/AF Bidhannagar, Kolkata - 700064, India;2. Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai - 400085, India;3. Indian Institute of Technology Gandhinagar, Gandhinagar - 382355, Gujarat, India;1. Department of Physics, SRM University, Ramapuram Campus, Chennai, Tamilnadu, India;2. Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu, India;3. Department of Physics, Sir Theagaraya College, Chennai, Tamilnadu, India
Abstract:The structural properties of Cerium mono-chalcogenides and mono-pnictides have been investigated for the first time by using a modified interionic potential theory. The calculated transition pressures are in good agreement with the experimental results. The ionic bonding is found to be more pronounced in Ce-mono-chalcogenides than mono-pnictides. The calculated values of elastic constants are also predicted for the first time.
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