MOSSBAUER AND X-RAY-DIFFRACTION STUDIES IN MORIN TRANSITION ON TABULAR HEMATITES

被引：9

作者：

DACOSTA, GM

DASILVA, EG

DEJESUS, MF

机构：

[1] UNIV FED MINAS GERAIS,DEPT QUIM,BR-31270 BELO HORIZONTE,MG,BRAZIL

[2] UNIV FED MINAS GERAIS,DEPT FIS,BR-31270 BELO HORIZONTE,MG,BRAZIL

来源：

HYPERFINE INTERACTIONS | 1991年 / 67卷 / 1-4期

关键词：

D O I：

10.1007/BF02398191

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：

Several synthetic hematites have been analysed by X-ray diffraction and Mossbauer spectroscopy. They have tabular shape and their Morin transition at 85 K show a dependence on the ratio (R) of the sizes in c and a directions. The Morin transition has been observed for samples with R = 0.43 +/- 0.05.

引用

页码：501 / 505

页数：5

共 6 条

[1] COSTA GM, 1990, THESIS U FEDERAL MIN
[2] THE MORIN TRANSITION - A SENSITIVE CRITERION FOR TESTING THE QUALITY OF ALPHA-FE2O3
FRITZSCH, E
PIETZSCH, C
HEEGN, H
HUHN, HJ
[J]. CRYSTAL RESEARCH AND TECHNOLOGY, 1982, 17 (11) : 1443 - 1447
[3] SOME PROPERTIES OF SUPPORTED SMALL ALPHA-FE203 PARTICLES DETERMINED WITH MOSSBAUER EFFECT
KUNDIG, W
BOMMEL, H
CONSTABA.G
LINDQUI.RH
[J]. PHYSICAL REVIEW, 1966, 142 (02): : 327 - &
[4] THE MORIN TRANSITION IN SMALL ALPHA-FE2O3 PARTICLES
MUENCH, GJ
ARAJS, S
MATIJEVIC, E
[J]. PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1985, 92 (01): : 187 - 192
[5] MOSSBAUER STUDIES OF MORIN TRANSITION IN BULK AND MICROCRYSTALLINE ALPHA-FE2O3
NININGER, RC
SCHROEER, D
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1978, 39 (02) : 137 - 144
[6] SHIFT OF SPIN FLIP TEMPERATURE OF ALPHA-FE2O3 FINE PARTICLES
YAMAMOTO, N
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1968, 24 (01) : 23 - &

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