Optical and magnetic properties of cobalt doped TiN thin films grown by RF/DC magnetron sputtering

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dc.contributor.authorAbualgassem, Een_AU
dc.contributor.authorMaarouf, Men_AU
dc.contributor.authorBake, Aen_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorAlam, Ken_AU
dc.contributor.authorHaider, MBen_AU
dc.date.accessioned2024-02-27T03:09:23Zen_AU
dc.date.available2024-02-27T03:09:23Zen_AU
dc.date.issued2022-05en_AU
dc.date.statistics2024-02-27en_AU
dc.description.abstractHere we report the study of cobalt doped titanium nitride thin films grown by reactive co-sputtering of cobalt and titanium targets in the presence of argon and nitrogen gases. Thin films were grown with different cobalt concentrations and analyzed by atomic force microscopy, spectrophotometry, X-ray photoelectron spectroscopy, X-ray reflectometry and vibrating sample magnetometry. We have found that the films readily oxidize after exposure to the atmosphere and form a cobalt doped titanium oxynitride. The variable cobalt concentration in the films affects the optical, chemical and magnetic properties. The bandgap of the films generally becomes narrower at higher cobalt concentrations. Cobalt is found to be in a mixture of the high spin + 2 and low spin + 3 oxidation states. At the lower cobalt concentrations, the magnetization is low and it is temperature-independent. Whereas at higher cobalt concentrations, the magnetic response becomes temperature-dependent with a mix of paramagnetism and superparamagnetism at 3–5 K. © 2022 Elsevier B.V.en_AU
dc.description.sponsorshipAuthors would like to acknowledge the physic department at KFUPM for their financial and technical support for this work.en_AU
dc.identifier.articlenumber169023en_AU
dc.identifier.citationAbualgassem, E., Maarouf, M., Bake, A., Cortie, D., Alam, K., & Haider, M. B. (2022). Optical and magnetic properties of cobalt doped TiN thin films grown by RF/DC magnetron sputtering. Journal of Magnetism and Magnetic Materials, 550, 169023. doi:10.1016/j.jmmm.2022.169023en_AU
dc.identifier.issn0304-8853en_AU
dc.identifier.journaltitleJournal of Magnetism and Magnetic Materialsen_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jmmm.2022.169023en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15449en_AU
dc.identifier.volume550en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectOptical propertiesen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectCobalten_AU
dc.subjectDoped materialsen_AU
dc.subjectThin Filmsen_AU
dc.subjectMagnetronsen_AU
dc.subjectSputteringen_AU
dc.subjectMicroscopyen_AU
dc.titleOptical and magnetic properties of cobalt doped TiN thin films grown by RF/DC magnetron sputteringen_AU
dc.typeJournal Articleen_AU
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