Study of monazite under high pressure |
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| Authors: | Tony Huang Jiann-Shing Lee Jennifer Kung Chih-Ming Lin |
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| Institution: | 1. Department of Earth Sciences, National Cheng Kung University, Taiwan;2. Department of Applied Physics, National Pingtung University of Education, Taiwan;3. Department of Applied Science, National Hsinchu University of Education, Hsinchu 30014, Taiwan;1. Department of Crystallography, Faculty of Geology, Lomonosov Moscow State University, Moscow, Leninskije Gory 1, 119992, GSP-2, Russia;2. Laboratory of Functional Materials, Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Leninskije Gory 1, 119992, GSP-2, Russia;1. State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;2. Key Laboratory of Advanced Materials of Precious-Nonferrous Metals, Education Ministry of China, Kunming 650093, China;3. Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China;1. Institute of Energy and Climate Research (IEK-6), Forschungszentrum Jülich, Wilhelm-Johnen-Strasse, 52425 Jülich, Germany;2. JARA High-Performance Computing, Schinkelstrasse 2, 52062 Aachen, Germany;3. Institute of Geoscience, Goethe Universität Frankfurt am Main, Altenhöferallee 1, 60438 Frankfurt, Germany;1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK-6): Nuclear Waste Management and Reactor Safety, 52425, Jülich, Germany;2. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK-1): Materials Synthesis and Processing, 52425, Jülich, Germany;3. ICSM, CNRS, CEA, ENSCM, Univ. Montpellier, Site de Marcoule, Bât 426, BP 17171, 30207, Bagnols/Cèze, France;4. Institute of Environmental Geology, Russian Academy of Sciences, St. Petersburg State University, St. Petersburg, 199004, Russia |
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| Abstract: | Monazite was studied under high pressures of up to 20 GPa and 12 GPa by using synchrotron X-ray diffraction and Raman spectroscopy, respectively. X-ray diffraction data suggested that there was a structural distortion at ～11.5 GPa. The pressure–volume data of the monazite was fitted to a third-order Birch–Murnaghan equation of state and yielded a bulk modulus of 109(1) GPa and a pressure derivative of 6.7(1), in agreement with an empirical formula. |
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