Epitaxial Magnetic Film Evaluation Techniques.
Abstract
This annual report reviews the progress of the first year in establishing experimental programs at three different locations and initiating research programs. At the Avionics Laboratory a new research laboratory was developed, a ferromagnetic resonance spectrometer for making whole wafer measurements was built and tested and the components of a M-H looper operating at 200Hz and sweeping H(max) + or - 400 Oe. was built. At the OSU Physics department, an experimental program was initiated to investigate the scattering of spinwaves from domain walls at microwave frequencies. An experimental program investigating the response of domain walls to rf frequencies was also initiated. A theoretical progress report of spinwave scattering is also included. At the OSU Electrical Engineering department, the initial phases of an add on amendment to the contract to investigate the feasibility of testing and characterizing very large (10 to the 9th power and above) memories is reported. The thrust of this effort will include a scanning of the bubble memory overlay pattern and an electrical characterization process using polarized laser light coupled to an optical wave guide. The presence of the magnetic bubble will introduce a change in the faraday rotation of the plane of polarization. This will be used as the 'Bubble detector' in a parallel access characterization process.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1978
- Accession Number
- ADA060381
Entities
People
- Kenneth J. Breeding
- Philip E. Wigen
Organizations
- Ohio State University