Crystal structure and EPR study of Mn-doped β-tricalcium phosphate

被引：31

作者：

Mayer, I. ^{[1
]}

Cohen, S. ^{[1
]}

Gdalya, S. ^{[1
]}

Burghaus, O. ^{[2
,3
]}

Reinen, D. ^{[2
,3
]}

机构：

[1] Hebrew Univ Jerusalem, Dept Inorgan & Analyt Chem, IL-91904 Jerusalem, Israel

[2] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany

[3] Univ Marburg, Zentrum Mat Wissensch, D-35032 Marburg, Germany

来源：

MATERIALS RESEARCH BULLETIN | 2008年 / 43卷 / 02期

关键词：

inorganic compounds; crystal structure; electronic paramagnetic resonance (EPR);

D O I：

10.1016/j.materresbull.2007.02.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mn-doped beta-tricalcium phosphate was prepared by solid state reaction at 1100 degrees C. The crystal structure of Ca2.85Mn0.15(PO4)(2), was determined by single crystal X-ray diffraction and found to be rhombohedral, R3c. Unit cell parameters are: a = 10.3419(3); c = 37.025(3) angstrom (hexagonal setting), Z = 21. Structure refinement data show that from the five Ca positions the Ca(4) site is only half filled and that the Mn2+ ions occupy the hexacoordinated Ca(5) site solely. EPR spectroscopy reveals that manganese in solid solutions Ca3-xMnx(PO4)(2) (x = 0.1; 0.28; 0.6) is divalent and supports the structure refinement results that Mn occupies the Ca(5) site with a geometry very near to a regular octahedron. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：447 / 452

页数：6

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