The growth of nanoscale structured iron films by glancing angle deposition

F. Liu, M. T. Umlor, L. Shen, J. Weston, W. Eads, J. A. Barnard, G. J. Mankey

Research output: Contribution to journalConference articlepeer-review


Chiral nanostructured thin films can be produced through precise control of the angle of incidence of a vapor flux concurrent with substrate rotation. The technique has been employed to create unique porous iron thin film structures on Si(100) with a columnar microstructure. Scanning electron microscopy images illustrate columnar iron films produced with azimuthal rotation during sample growth with the incident flux at an angle of 75° with respect to the surface normal. The columns were found to be well isolated with a narrow distribution of diameters, resulting in aspect ratios of approximately 8 to 1. Hysteresis loops reveal the columnar growth induced a large magnetic shape anisotropy relative to that observed for an iron film grown with normal incidence. The evolution of the columnar microstructure was followed from simple oblique deposition (no substrate rotation), giving a fibrous slanted microstructure, to high-speed rotation where a broad size distribution of highly faceted columnar structures was observed. The measured microstructure is related to the observed magnetic properties.

Original languageEnglish (US)
Pages (from-to)5486-5488
Number of pages3
JournalJournal of Applied Physics
Issue number8 II B
StatePublished - Apr 15 1999
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, United States
Duration: Nov 9 1998Nov 12 1998

ASJC Scopus subject areas

  • General Physics and Astronomy


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