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Configuration of Carbonate Ions in Apatite Structure Determined by Polarized Infrared Spectroscopy
Author(s) -
Suetsugu Yasushi,
Shimoya Ichiro,
Tanaka Junzo
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02403.x
Subject(s) - carbonate , ion , diffractometer , infrared spectroscopy , carbonate ion , apatite , chemistry , crystallography , infrared , spectroscopy , argon , materials science , analytical chemistry (journal) , mineralogy , crystal structure , optics , physics , organic chemistry , chromatography , quantum mechanics
Carbonate apatite single crystals were grown under 50 MPa of argon gas using CaCO 3 flux. The crystals obtained were hexagonal prismatic, 1 mm in length and 200 μm in diameter. Carbonate ions occupied both A(OH)‐sites and B(PO 4 )‐sites; A‐sites were completely substituted by carbonate ions. The space group was determined using a four‐circle diffractometer to be P . From the angular dependence of polarized IR spectra for out‐of‐plane and in‐plane bending vibrations of CO 3 ions, it was indicated that the triangular plane of the CO 3 ion was parallel to the c ‐axis for A‐site substitution and perpendicular to the c ‐axis for B‐site substitution.