Magnetism and Structure of ZnxFe3-xO4 Films Processed via Spin-Spray Deposition

Abstract

Zn-ferrite films, Zn(x)Fe(3-x)O(4) where the Zn:Fe ratio ranges from 0.36 to 0.76, were grown on glass substrates using a spin spray technique. Films are shown using scanning electron microscopy and atomic force microscopy to be dense and granular with an average grain size ~0.3 microns. X-ray diffraction indicates that the films are a Fd3m symmetry consistent with a pure spinel ferrite phase. The films' coercive fields have a strong positive correlation with the film roughness indicating the dominance of a physical domain wall pinning mechanism. The films are smooth and magnetically soft near the ZnFe(2)O(4) stoichiometry. All films, including those near the ZnFe(2)O(4) stoichiometry, display ferrimagnetic behavior with compensation temperatures well above the bulk Neel temperature of 9.5 K; this is attributed to the cation disorder measured in the Zn cation distribution.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 15, 2002
Accession Number
ADA516251

Entities

People

  • E. E. Carpenter
  • M. E. Mchenry
  • M. M. Miller
  • Marc P. Raphael
  • Mitra L. Taheri
  • V. Cestone
  • Vincent G. Harris

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Diffraction
  • Domain Walls
  • Electron Microscopes
  • Electron Microscopy
  • Ferrites
  • Magnetic Properties
  • Magnetometers
  • Materials
  • Materials Science
  • Microscopes
  • Microscopy
  • Neel Temperature
  • Physics
  • Scanning Electron Microscopes
  • Scanning Electron Microscopy
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science
  • Physics

Readers

  • Materials Science and Engineering.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene