Spectroscopy and Imaging of Edge Modes in Permalloy Nanodisks

被引：65

作者：

Guo, Feng ^{[1
,2
]}

Belova, L. M. ^{[3
]}

McMichael, R. D. ^{[1
]}

机构：

[1] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Maryland Nanoctr, College Pk, MD 20742 USA

[3] Royal Inst Technol, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 01期

基金：

瑞典研究理事会;

关键词：

FERROMAGNETIC-RESONANCE; MICROSCOPY;

D O I：

10.1103/PhysRevLett.110.017601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report ferromagnetic resonance force microscopy of confined spin-wave modes with improved, 100 nm resolution. The ferromagnetic resonance spectra in Permalloy disks (diameters ranging from 100 to 750 nm) distinguish multiple edge modes, and the images reveal distinct precession patterns. The fundamental edge mode also provides a new, localized probe of the magnetic properties of the film edge; rotation of the applied field reveals large edge property variations in nominally circular disks. As a function of disk diameter, the number of observed edge modes agrees with modeling. DOI: 10.1103/PhysRevLett.110.017601

引用

页数：5

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