MOSSBAUER STUDIES OF FE INCLUSIONS IN SYNTHETIC DIAMOND

被引：9
|
作者：
BHARUTHRAM, K [1 ]
HARICHARUN, H [1 ]
GOVENDER, N [1 ]
SELLSCHOP, JPF [1 ]
机构：
[1] UNIV WITWATERSRAND,JOHANNESBURG 2050,SOUTH AFRICA
来源：
HYPERFINE INTERACTIONS | 1992年 / 71卷 / 1-4期
关键词：
D O I：
10.1007/BF02397347
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：
Mossbauer spectroscopy has been used to study the hyperfine interaction at Fe inclusions in a suite of MDAS synthetic diamonds of grain sizes in the range 25-250-mu-m. For the 250-mu-m grains a six line spectrum typical of alpha-Fe is obtained. With decreasing grain size the spectra reflect a rapid phase transition of the Fe inclusions from ferromagnetic to paramagnetic. A surprising result is the re-appearance of ferromagnetic structure in the spectrum of the finest grains studied. Electric quadrupole splitting in some of the spectra suggest that a small fraction of the Fe form Fe-C bonds at substitutional sites in the diamond lattice.
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收藏
页码：1407 / 1410
页数：4
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