Structure and properties of CO2- centers in biological and synthetic hydroxyapatite

被引：4
|
作者：
Rudko, V. V. [1 ]
Baran, N. P. [1 ]
Vorona, I. P. [1 ]
Ishchenko, S. S. [1 ]
Okulov, S. M. [1 ]
Chumakova, L. S. [1 ]
机构：
[1] NAS Ukraine, Inst Semicond Phys, UA-03028 Kiev, Ukraine
来源：
11TH EUROPHYSICAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS (EURODIM 2010) | 2010年 / 15卷
关键词：
TOOTH ENAMEL; EPR;
D O I：
10.1088/1757-899X/15/1/012032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Biological and synthetic carbonate-containing hydroxyapatites (HAP) were exposed to gamma-rays and studied by the electron paramagnetic resonance (EPR) and the electron-nuclear double resonance (ENDOR). Two types of CO2- radicals - axial and orthorhombic ones - were shown to be the dominating gamma-induced paramagnetic centers in the abovementioned materials. The study of metastable radiation-induced centers allowed to identify these defects with molecular ions CO33- in B position. The mechanism of CO2- radical formation was proposed to be CO32--> CO33--> CO2-.
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页数：10
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