Study of monazite under high pressure

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...

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Veröffentlicht in:	Solid state communications 2010-10, Vol.150 (37), p.1845-1850
Hauptverfasser:	Huang, Tony, Lee, Jiann-Shing, Kung, Jennifer, Lin, Chih-Ming
Format:	Artikel
Sprache:	eng
Schlagworte:	Bulk modulus C. Structural distortion Condensed matter: structure, mechanical and thermal properties D. Phonons in crystal lattices Derivatives Diffraction Distortion E. X-ray diffraction Empirical equations Exact sciences and technology Inorganic compounds Lattice dynamics Monazite Phonon states and bands, normal modes, and phonon dispersion Phonons and vibrations in crystal lattices Physics Salts Structure of solids and liquids crystallography Structure of specific crystalline solids Synchrotrons X-rays
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Zusammenfassung:	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.
ISSN:	0038-1098 1879-2766
DOI:	10.1016/j.ssc.2010.06.042