Wide range tuning of resonant frequency for a vortex core in a regular triangle magnet

Satoshi Yakata, Terumitsu Tanaka, Kohei Kiseki, Kimihide Matsuyama, Takashi Kimura

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A magnetic vortex structure stabilized in a micron or nano-sized ferromagnetic disk has a strong potential as a unit cell for spin-based nano-electronic devices because of negligible magnetostatic interaction and superior thermal stability. Moreover, various intriguing fundamental physics such as bloch point reversal and symmetry breaking can be induced in the dynamical behaviors in the magnetic vortex. The static and dynamic properties of the magnetic vortex can be tuned by the disk dimension and/or the separation distance between the disks. However, to realize these modifications, the preparations of other devices with different sample geometries are required. Here, we experimentally demonstrate that, in a regular-triangle Permalloy dot, the dynamic properties of a magnetic vortex are greatly modified by the application of the in-plane magnetic field. The obtained wide range tunability based on the asymmetric position dependence of the core potential provides attractive performances in the microwave spintronic devices.

Original languageEnglish
Article number3567
JournalScientific reports
Volume3
DOIs
Publication statusPublished - Dec 20 2013

Fingerprint

triangles
resonant frequencies
magnets
tuning
vortices
dynamic characteristics
Permalloys (trademark)
magnetostatics
broken symmetry
thermal stability
microwaves
preparation
physics
geometry
cells
electronics
magnetic fields
interactions

All Science Journal Classification (ASJC) codes

  • General

Cite this

Wide range tuning of resonant frequency for a vortex core in a regular triangle magnet. / Yakata, Satoshi; Tanaka, Terumitsu; Kiseki, Kohei; Matsuyama, Kimihide; Kimura, Takashi.

In: Scientific reports, Vol. 3, 3567, 20.12.2013.

Research output: Contribution to journalArticle

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