AN EPR STUDY OF TRIVALENT IRON IN WARDITE

被引：2
|
作者：
VASSILIKOUDOVA, AB [1 ]
机构：
[1] UNIV ATHENS,DEPT PHYS,ZOGRAFOS,GREECE
来源：
APPLIED MAGNETIC RESONANCE | 1993年 / 5卷 / 01期
关键词：
D O I：
10.1007/BF03162469
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
EPR of Fe3+ in a natural phosphate single crystal (wardite) revealed the presence of only one prominent center in orthorhombic symmetry. From the orientation of the principal axes of the spin Hamiltonian parameters it is concluded that the center results from the substitution of Fe3+ for Al(2) which is the larger of the two available aluminum sites in this mineral. This result is in agreement with previous investigations in similar cases in which the larger site of a smaller host ion is preferentially occupied.
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页码：25 / 29
页数：5
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