High-frequency domain-wall motion and magnetization rotation of patterned permalloy films under external magnetic field excitation

Syed Azeemuddin, Axel Friedrich Hoffmann, Ralu Divan, Michael J. Donahue, Seok Hwan Chung, Pingshan Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The incorporation of ferromagnetic materials into integrated microwave devices is a promising approach for the development of on-chip high-performance circuit components. Therefore, high-frequency domain-wall motion and magnetization rotation, which yield permeability, are of primary interest. However, so far it has not been attempted to physically separate high-frequency domain-wall motion and magnetization rotation that are under high-frequency magnetic field excitation. Nor have there attempts for the corresponding characterizations. In this work, patterned permalloy films are integrated with on-chip microstrip lines. Domain-wall motion and magnetization rotation are separated through aspect ratio and dimension control. The measured results show that highfrequency-field driven domain-wall motion is fast, different from current driven domain-wall motion. It is also shown that coupling effects are not important when the distance between two adjacent permalloy films is ∼ 1 μm despite their large lateral dimensions. The experimental results agree with simulation results.

Original languageEnglish (US)
Title of host publication2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006
Pages853-856
Number of pages4
StatePublished - Dec 1 2006
Externally publishedYes
Event2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006 - Cincinnati, OH, United States
Duration: Jun 17 2006Jun 20 2006

Publication series

Name2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006
Volume2

Other

Other2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006
CountryUnited States
CityCincinnati, OH
Period6/17/066/20/06

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science(all)

Fingerprint Dive into the research topics of 'High-frequency domain-wall motion and magnetization rotation of patterned permalloy films under external magnetic field excitation'. Together they form a unique fingerprint.

Cite this