Neutron diffraction studies on ‘‘simple'' iron oxides under pressure: Fe_3O_4, a-Fe_2O_3, and FeO  

作　　者：Stefan Klotz 

机构地区：[1]IMPMC, CNRS UMR 7590, Universite' Pierre & Marie Curie,75252 Paris, France

出　　处：《Chinese Science Bulletin》2014年第36期5241-5250,共10页

摘　　要：Fe3O4(magnetite), a-Fe2O3(hematite), and Fe O(wu¨ stite) are the three major iron oxides and some of the most fundamental solids in nature. Interest in these systems is due to their abundance as minerals in the Earth and other telluric planets as well as their interesting electronic and magnetic properties which have been studied for decades. In this article, we review high-pressure studies on these three systems using neutron powder diffraction in the0–14 GPa range with a particular focus on the behavior of magnetism under pressure. Unpublished data on the pressure dependence of the Ne′el temperature in Fe O are presented. This review will give at the same time an introduction into technical aspects and illustrate the potential of high-pressure neutron scattering in the future.Fe3O4（magnetite）, a-Fe2O3（hematite）, and Fe O（wu¨ stite） are the three major iron oxides and some of the most fundamental solids in nature. Interest in these systems is due to their abundance as minerals in the Earth and other telluric planets as well as their interesting electronic and magnetic properties which have been studied for decades. In this article, we review high-pressure studies on these three systems using neutron powder diffraction in the0–14 GPa range with a particular focus on the behavior of magnetism under pressure. Unpublished data on the pressure dependence of the Ne′el temperature in Fe O are presented. This review will give at the same time an introduction into technical aspects and illustrate the potential of high-pressure neutron scattering in the future.

关 键 词：四氧化三铁 α-氧化铁 中子衍射 Α-FE2O3 磁压力 FEO 中子散射 磁铁矿 

分 类 号：TM277[一般工业技术—材料科学与工程]