physica status solidi (a) · 2010 · 12 citations · 25 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsMaterials ChemistryThin FilmsFerromagnetic MaterialsFerromagnetismMagnetic CharacterizationMagnetic OxidesMagnetic Properties Of SolidsMagnetic Thin FilmsHall EffectHall Effect MeasurementsOxygen VacanciesOxygen Vacancies In Metal OxidesThin Film FerromagnetismThin Film FerromagnetsThin-film Magnetic MaterialsVibrating Sample Magnetometry
Abstract The effect of oxygen vacancies on ferromagnetism (FM) in Zn 1− x Mn x O thin films grown by radio frequency (RF) sputtering has been investigated. The grown films at different oxygen pressures have been characterized by X‐ray diffraction (XRD), Hall effect, photoluminescence (PL) and vibrating sample magnetometry (VSM). The observed ferromagnetism/diamagnetism by the VSM measurement due to the variation of oxygen vacancies has been confirmed by XRD, PL, and Hall results. The vacancy‐mediated FM has been explained by the formation of magnetic polarons.
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