Ferromagnetic InMnSb multi-phase films study by aberration-corrected (scanning) transmission electron microscopy

被引：30

作者：

Lari, Leonardo ^{[1
,2
]}

Lea, Stephen ^{[1
]}

Feeser, Caitlin ^{[3
]}

Wessels, Bruce W. ^{[4
,5
]}

Lazarov, Vlado K. ^{[1
,2
]}

机构：

[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[2] Univ York, York JEOL Nanoctr, York YO10 5DD, N Yorkshire, England

[3] Northwestern Univ, Dept Chem Engn, Evanston, IL 60208 USA

[4] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[5] Northwestern Univ, Mat Res Ctr, Evanston, IL 60208 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 07期

基金：

美国国家科学基金会; 英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.3676202

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work we report a structural and compositional study of ferromagnetic In0.78Mn0.22Sb films correlated to the magnetic properties as determined by superconducting quantum interference device magnetometer. The epilayers grown by metalorganic vapor phase epitaxy on GaAs(001) substrates showed two active magnetic components with Curie temperatures of approximately 300K and in excess of 570 K. Secondary phases driven by the high manganese concentration (10 at. %) were identified by high-resolution (scanning) transmission electron microscopy imaging and energy dispersive X-ray spectroscopy. Most of the Mn was found to be incorporated in metallic manganese nanoprecipitates surrounded by an InMnSb matrix with Mn at 1 at. % concentration. The origin of the two Curie temperatures of the film is associated with the presence of three magnetic components: hexagonal MnSb nanoprecipitates, non-stoichiometric MnAsSb, and the InMnSb matrix. (C) 2012 American Institute of Physics. [doi:10.1063/1.3676202]

引用

页数：3

共 13 条

[1] ELECTRONIC-STRUCTURE OF TRANSITION-METAL MONOANTIMONIDES - ANALOGY TO TRANSITION-METALS [J].