Magnetization Switching in a Magneto-Optic Thin Film

Abstract

An improved technique for observing sub-nanosecond magnetization changes in thin films has been used to study the underdamped oscillatory behavior in a (Y(2.5)Gd(.5))Fe4Ga1)O12 sample. The measurement set-up uses a version of the alternate sampling technique in which the sensitivity has been upgraded by the use of a lock-in amplifier. By using a shorted strip-line of appropriate length to apply to the film two properly timed magnetic field steps, the precession of the magnetization can be quelled, and the magnetization can be switched between initial and final directions in a half-cycle of the resonant frequency.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1974
Accession Number
AD0780703

Entities

People

  • James M. White
  • S. C. Tseng

Organizations

  • IBM Thomas J. Watson Research Center

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Amplifiers
  • Coaxial Cables
  • Contracts
  • Films
  • Frequency
  • Magnetic Fields
  • Magnetic Films
  • Magnetization
  • Measurement
  • Optical Waveguides
  • Orientation (Direction)
  • Precession
  • Resonant Frequency
  • Strip Transmission Lines
  • Thin Films
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Superconducting Magnet Technology
  • Systems Analysis and Design