Magnetic characterization of nanocrystalline nickel ferrite films processed by a spin-spraying method

G. Caruntu, I. Dumitru, G. G. Bush, D. Caruntu, Charles J. O'Connor

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Highly crystalline nickel ferrite films with different chemical compositions were processed via the spin-spraying method and their morphological, structural and magnetic properties were subsequently investigated. Regardless of the chemical composition, films with variable thicknesses are constructed by 200-400 nm spherical grains grown in the direction normal to the substrate surface. Magnetization measurements show that the spinel ferrite films present a hysteretic behaviour at room temperature with a randomly oriented in-plane easy axis and an anisotropy constant K1 ≈ -2.5 × 104 erg cm-3. Furthermore, the absence of an angular dependence of the coercivity for the in-plane measurement of magnetization coupled with the 'M'-shaped angular dependence of the out-of-plane measurement, indicates that the anisotropy of this film is predominantly crystalline shape anisotropy.

Original languageEnglish
Pages (from-to)811-815
Number of pages5
JournalJournal of Physics D: Applied Physics
Volume38
Issue number6
DOIs
StatePublished - Mar 21 2005

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