Role of magnetic anisotropy on the magnetic properties of Ni nanoclusters embedded in a ZnO matrix

Nunes, W.C. ; Borges, R. ; Cruz, M.M. ; Da Silva, R.C. ; Wahl, U. ; Cuchillo, A. ; Vargas, P. ; Magén, C. (Universidad de Zaragoza) ; Godinho, M.

Resumen: We have investigated the magnetic properties of Ni nanoaggregates produced by ion implantation in ZnO single crystals. Several deviations from classical models usually adopted to describe the magnetic properties of nanoparticle systems were found. The strain between host and Ni nanoaggregates induces a magnetic anisotropy with a preferred direction. We show that these anisotropy effects can be misinterpreted as a ferromagnetic or antiferromagnetic coupling among the nanoaggregates similar to that of an oriented, interacting nanocrystal ensemble.

Idioma: Inglés

DOI: 10.1063/1.4890498

Año: 2014

Publicado en: Journal of Applied Physics 116 (2014), 033916 [6 pp]
ISSN: 0021-8979

Factor impacto JCR: 2.183 (2014)

Categ. JCR: PHYSICS, APPLIED rank: 42 / 144 = 0.292 (2014) - Q2 - T1

Financiación: info:eu-repo/grantAgreement/ES/FEDERPTDC-FIS-66262-2006

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)