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Absence of abrupt pressure-induced magnetic transitions in magnetite

被引：30
|
作者：
Baudelet, Francois [1 ,2 ]
Pascarelli, Sakura [3 ]
Mathon, Olivier [3 ]
Itie, Jean-Paul [1 ,2 ]
Polian, Alain [2 ]
Chervin, Jean-Claude [1 ]
机构：
[1] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
[2] Univ Paris 06, IMPMC UMR 7590, F-75015 Paris, France
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 14期
关键词：
VERWEY TRANSITION; X-RAYS; FE3O4; PHASE; METALLIZATION; EDGE;
D O I：
10.1103/PhysRevB.82.140412
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structural properties of magnetite Fe(3)O(4) under pressure have been extensively studied and are well established. This is not the case for its electronic and magnetic properties. We report a high-pressure x-ray magnetic circular dichroism study of magnetite up to 41 GPa. We observe a continuous evolution of the magnetic moment in the whole pressure range, in agreement with a band-structure description of the electronic state of magnetite. We highlight distinct regimes of magnetism. The x-ray absorption spectra do not suggest any major modification in the local structure in this pressure range.
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页数：4
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