Stratification in Thin Permalloy Films
- 1 March 1962
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 33 (3) , 1150-1151
- https://doi.org/10.1063/1.1728639
Abstract
Permalloy films have been studied to determine composition variations which exist in a direction normal to the substrate surface. These films are formed by a noninterrupted deposition process. They are classified according to the amount of oxygen present on the substrate prior to deposition. If normal care is taken to produce a clean glass substrate, a thin layer of αFe2O3 and NiFe2O4 is produced at the film‐substrate interface. Those films produced on a substrate saturated with oxygen have a thick negative magnetostrictive alloy layer adjacent to the substrate. This nickel‐rich alloy presumably results from the diffusion of oxygen through the depositing films and the formation of iron oxide and nickel ferrite. In addition to the chemical analysis of the films, evidence to support the idea of stratification is found in the etch experiments, resonance data, saturation magnetization measurements, and cross section analysis.This publication has 5 references indexed in Scilit:
- Rotatable Anisotropy in Thin Permalloy FilmsJournal of Applied Physics, 1961
- Saturation Magnetization of Nickel Films of Thickness Less Than 100 APhysical Review B, 1959
- Polarography of Mixtures. Simultaneous Determination of Iron and NickelAnalytical Chemistry, 1959
- Properties of Permalloy Films Having a Magnetoelastic Easy Axis Normal to the FilmJournal of Applied Physics, 1959
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