PROJECT LIGHTNING. VOLUME II

Abstract

Research to serve as the basis for the evolution of an ultrahigh-speed data-processing system is summarized. The effects of rate of deposition, glass cleaning techniques, and different types of glass substrates on the magnetic properties of vacuum-deposited Permalloy films were studied. Rates of deposition ranging from 15 A/sec to 200 A/sec were found to have no effect on H sub C and H sub K within the error of the experiment. The magnetoelastic strain coefficient decreased slightly with increasing rate in this range. Optimum methods of making electro-deposited permalloy films were investigated. Methods were developed to reduce the composition variation. Magnetic properties of the permalloy films made are relatively poor. Both the anisotropy field and the coercive field are relatively large, and magnetic properties exhibit a large range over an array. Other investigation concerned: apparatus and instrumentation, measurements, switching and resonance studies, mathematics and logic research, and the Lightning test machine. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1961
Accession Number
AD0263109

Entities

Organizations

  • Sperry Corporation

Tags

DTIC Thesaurus Topics

  • Anisotropy
  • Coefficients
  • Data Processing
  • Instrumentation
  • Lightning
  • Magnetic Properties
  • Mathematics
  • Measurement
  • Personal Information Managers
  • Resonance
  • Substrates
  • Switching

Readers

  • Electrical Engineering
  • Superconducting Magnet Technology
  • Surface Engineering/Surface Coating Technology.