Comparing study of magnetic properties of Co–CeO2 thin films with (111) and (100) preferred orientations. (June 2014)

• Record Type: Journal Article
• Authors: Mu, C. H.; Song, Y. Q.; Hu, J. R.
• Is Part Of: Materials research innovations. Volume 18:Number 3(2014)
• Page Start: 201
• Page End: 207
• Publication Date: 2014-06
• Subjects: Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1433075X13Y.0000000187
• Languages: English
• ISSNs: 1432-8917

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>In recent years, diluted magnetic oxides (DMOs) have been intensively studied aiming for using for spin injection and transportation. In this paper, DMOs of cobalt doped CeO₂ (CCO) films with varied cobalt content (0–10%) were fabricated on Al₂O₃ (0001) substrates by both pulsed laser deposition (PLD) and magnetron sputtering respectively. Pulsed laser deposited and sputtered CCO films showed CeO₂ (111) and (100) preferred orientations respectively. These two types of films with different crystallinity had almost the same magnetic and magneto-optical properties, such as room temperature ferromagnetism, non-linearly dependent of the moments on cobalt content, anisotropic magnetisation with an easy axis in out of plane direction and giant Faraday effect. The largest Faraday rotation value of ∼4500° cm⁻¹ at 650 nm wavelength was obtained, for both PLD and magnetron sputtered films. The successful fabrication of ferromagnetic CCO films with controllable preferred orientations on Al₂O₃ (0001) substrates would be useful to facilitate epitaxial multilayered thin film devices fabrication.</p> </abstract>