RESEARCH ON STRUCTURE AND MAGNETIC PROPERTIES OF EXPITAXIALLY GROWN MAGNETIC FILMS.
Final scientific rept., 17 Dec 62-16 Dec 65,
FRANKLIN INST RESEARCH LABS PHILADELPHIA PA
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Three major areas have been investigated. 1 An investigation of the role of imperfections in magnetic thin films has been conducted and a strong emphasis in this effort has been placed upon epitaxial properties. The results include an evaluation of voids in aged single crystals, an analysis of face-centered-cubic single crystal cobalt films and an investigation of ripple as related to crystallographic properties of the epitaxial films. 2 A program to investigate the properties and origin of strip domains in various NiFe thin films was initiated. Methods for observing these domains were perfected and properties evaluated as a function of film fabrication parameters. 3 A large uniaxial anisotropy has been observed in NiFe films deposited on single crystal quartz substrates. Subsequent investigations show that its origin is a substrate-film constraint mechanism related to the planar strain system developed because of a difference in coefficients of the thermal expansion of the quartz and NiFe film. Author
- Metallurgy and Metallography
- Electricity and Magnetism
- Solid State Physics