Magnetic properties of self-assembled Fe nanoislands on BaTiO3(001)

被引：2

作者：

Govind, R. K. ^{[1
]}

Babu, V. Hari ^{[2
]}

Chiang, C. -T. ^{[1
,3
]}

Magnano, E. ^{[4
]}

Bondino, F. ^{[4
]}

Denecke, R. ^{[2
]}

Schindler, K. -M. ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Inst Phys, Nat Wissensch Fak 2, D-06099 Halle, Germany

[2] Univ Leipzig, Wilhelm Ostwald Inst Phys & Theoret Chem, D-04103 Leipzig, Germany

[3] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany

[4] Lab Nazl TASC, IOM CNR, I-34149 Trieste, Italy

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 346卷

关键词：

MOKE; XMCD; Iron; Barium titanate; LEED; SEM; Self-assembly; IRON; NANOSTRUCTURES; FILMS;

D O I：

10.1016/j.jmmm.2013.07.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The coercivity and saturation magnetization of ultrathin films of Fe on a BaTiO3(001) single crystal substrate have been determined using magneto-optic Kerr effect (MOKE) and X-ray magnetic circular dichroism (XMCD) as a function of annealing temperature. Films deposited at room temperature exhibit bulk-like properties, whereas with increasing annealing temperature coercivity increases and saturation magnetization decreases. Investigations with scanning electron microscopy (SEM) and low-energy electron diffraction (LEED) reveal that annealing causes a morphology transformation from a continuous flat film, which completely covers the substrate, to nanoislands via self-assembled growth. The morphology and size of the islands imply stronger pinning of domain walls or complex magnetic structures as the origin of their particular magnetic properties. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：16 / 20

页数：5

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