CATION DISTRIBUTION AND OXIDATION-STATES IN NICKEL MANGANITES NIMN2O4 AND NI0.8MN2.2O4 FROM POWDER NEUTRON-DIFFRACTION

被引：22
作者：
BAUDOUR, JL
BOUREE, F
FREMY, MA
LEGROS, R
ROUSSET, A
GILLOT, B
机构：
[1] CENS,LEON BRILLOUIN LAB,F-91191 GIF SUR YVETTE,FRANCE
[2] UNIV TOULOUSE 3,CHIM MAT INORGAN LAB,F-31055 TOULOUSE,FRANCE
[3] FAC SCI DIJON,REACT SOLIDES LAB,F-21004 DIJON,FRANCE
来源：
PHYSICA B | 1992年 / 180卷
关键词：
D O I：
10.1016/0921-4526(92)90672-F
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The cation distribution has been determined in the nickel manganites NiMn2O4 and Ni0.8Mn2.2O4 from powder neutron diffraction studies. It strongly depends upon the thermal history of the specimens. Additional information given by Mn2+ thermogravimetric oxidation experiments. has established the oxidation states of cations on the tetrahedral and octahedral sites of the cubic spinel structure. The magnetic structures determined at 1.5 K are in good agreement with the weak values of the spontaneous magnetization.
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页码：97 / 99
页数：3
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