Interplay between structural and magnetic properties of L10-FePt(001) thin films directly grown on MgO(001)

被引：21

作者：

Laenens, B. ^{[1
,2
]}

Almeida, F. M. ^{[1
,2
]}

Planckaert, N. ^{[1
,2
]}

Temst, K. ^{[1
,2
]}

Meersschaut, J. ^{[1
,2
]}

Vantomme, A. ^{[1
,2
]}

Rentenberger, C. ^{[3
]}

Rennhofer, M. ^{[3
]}

Sepiol, B. ^{[3
]}

机构：

[1] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium

[2] Katholieke Univ Leuven, INPAC, B-3001 Louvain, Belgium

[3] Univ Vienna, Fak Phys, A-1090 Vienna, Austria

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 07期

关键词：

TEMPERATURE-DEPENDENCE; ANISOTROPY; AXIS; LAYERS; MEDIA; ORDER;

D O I：

10.1063/1.3093955

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a detailed study of the magnetic and structural properties of L1(0)-FePt thin films. The films are prepared via molecular beam epitaxy directly onto MgO(001) substrates, i.e., without buffer layer. Despite the large lattice misfit between the in-plane lattice parameters of L1(0) FePt and MgO, highly ordered thin films are obtained with the easy magnetization c axis perpendicular to the film plane. Via high resolution transmission electron microscopy and Rutherford backscattering measurements we focus on the FePt/MgO interface to study the misfit relaxation and the defect density. Further, the influence of elevated substrate temperatures and of postgrowth high temperature annealing on the structural and magnetic properties is discussed. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3093955]

引用

页数：6

共 26 条

[1] Feasibility of FePt longitudinal recording media for ultrahigh density recording [J].