Fe3O4(111) thin films with bulk-like properties: growth and atomic characterization

被引：24

作者：

Matsuzaki, Kosuke ^{[1
]}

Lazarov, Vlado K. ^{[2
]}

Lari, Leonardo ^{[2
,3
]}

Hosono, Hideo ^{[1
,4
]}

Susaki, Tomofumi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Secure Mat Ctr, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

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

[3] Univ York, York JEOL Nanoctr, York YO10 5BR, N Yorkshire, England

[4] Tokyo Inst Technol, Frontier Res Ctr, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2013年 / 46卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

MAGNETITE FE3O4; VERWEY TRANSITION; MAGNETORESISTANCE; TEMPERATURE; ANISOTROPY; POINT; PHASE;

D O I：

10.1088/0022-3727/46/2/022001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Growth defects, domain structures and off-stoichiometric compositional deviation are the cause of significant deviation of magnetic and transport properties of magnetite (Fe3O4) thin films. We show that these anomalous properties can be fully controlled by postannealing in CO/CO2 atmosphere. Aberration corrected electron microscopy has revealed a full structural transformation from Fe/FeOx to Fe3O4 and a drastic reduction of growth defects in the postannealed films. The magnetic and magnetotransport measurements show that postannealed film properties are bulk-like: the magnetization was fully saturated with similar to 480 emu cm(-3), as in bulk single crystal, and the negative magnetoresistance was suppressed an order of magnitude.

引用

页数：5

共 24 条

[1] Ferroelectric Switching in Multiferroic Magnetite (Fe3O4) Thin Films [J].