Optical and structural properties of cobalt-permalloy slanted columnar heterostructure thin films

Derek Sekora, Chad Briley, Mathias Schubert, Eva Schubert

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Optical and structural properties of sequential Co-column–NiFe-column slanted columnar heterostructure thin films with an Al 2 O 3 passivation coating are reported. Electron-beam evaporated glancing angle deposition is utilized to deposit the sequential multiple-material slanted columnar heterostructure thin films. Mueller matrix generalized spectroscopic ellipsometry data is analyzed with a best-match model approach employing the anisotropic Bruggeman effective medium approximation formalism to determine bulk-like and anisotropic optical and structural properties of the individual Co and NiFe slanted columnar material sub-layers. Scanning electron microscopy is applied to image the Co-NiFe sequential growth properties and to verify the results of the ellipsometric analysis. Comparisons to single-material slanted columnar thin films and optically bulk solid thin films are presented and discussed. We find that the optical and structural properties of each material sub-layer of the sequential slanted columnar heterostructure film are distinct from each other and resemble those of their respective single-material counterparts.

Original languageEnglish (US)
Pages (from-to)783-787
Number of pages5
JournalApplied Surface Science
Volume421
DOIs
StatePublished - Nov 1 2017

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Permalloys (trademark)
Cobalt
Heterojunctions
Structural properties
cobalt
Optical properties
optical properties
Thin films
thin films
Spectroscopic ellipsometry
passivity
ellipsometry
Passivation
deposits
electron beams
formalism
Electron beams
coatings
Deposits
scanning electron microscopy

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Optical and structural properties of cobalt-permalloy slanted columnar heterostructure thin films. / Sekora, Derek; Briley, Chad; Schubert, Mathias; Schubert, Eva.

In: Applied Surface Science, Vol. 421, 01.11.2017, p. 783-787.

Research output: Contribution to journalArticle

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