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Study of carbon-doped Mn3Ga thin films with enhanced magnetization

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dc.contributor.author Holguín-Momaca, José Trinidad
dc.contributor.author Gutiérrez-Pérez, R.M.
dc.contributor.author Reyes Rojas, Armando
dc.contributor.author Espinosa-Magaña, Francisco
dc.contributor.author Ricardo López Antón
dc.date.accessioned 2019-09-24T16:38:16Z
dc.date.available 2019-09-24T16:38:16Z
dc.date.issued 2019
dc.identifier.citation Holguín-Momaca, J. T., Pérez, R. M. G., Reyes-Rojas, A., Espinosa-Magaña, F., Antón, R. L., & Olive-Méndez, S. F. (2019). Study of carbon-doped Mn3Ga thin films with enhanced magnetization. Intermetallics, 104, 90-96. es_ES
dc.identifier.uri http://hdl.handle.net/10578/21860
dc.description.abstract Carbon-doped Mn3Ga thin films were grown on Si/SiO2 substrates using rf magnetron sputtering technique and they present an enhancement of their magnetization. In this work we focus on the structural stress, theoretical calculations and magnetization analysis (using both Bloch's and Kneller's laws). The residual stress component has been calculated by means of x-ray diffraction in gracing incidence, using the ? method for multiple crystallographic reflections. We have observed an increase of the cell volume or positive (tensile) strain, which is higher near the surface of the film. The existence of induced magnetism in Mn3GaC0.25, with C entering in interstitial positions has been investigated by first-principles calculations, using the projector-augmented-wave method, within the generalized gradient approximation. Spin charge distributions and magnetic moments associated with each ion, were analyzed by performing a Bader charge analysis. Noteworthily, in spite of being a thin film, the magnetic behavior of the sample can be well described considering it formed by magnetic nanoparticles. Magnetic field and temperature dependence of the magnetization measurements were used to evaluate the Bloch and Kneller exponents, showing that dipolar interactions take place between Mn3GaC0.25 nanoparticles es_ES
dc.format application/pdf es_ES
dc.language.iso en es_ES
dc.publisher Elsevier es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.subject Thin films and multilayers es_ES
dc.subject Magnetic properties es_ES
dc.subject Point defect es_ES
dc.subject Density functional theory es_ES
dc.title Study of carbon-doped Mn3Ga thin films with enhanced magnetization es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.identifier.DOI doi.org/10.1016/j.intermet.2018.10.021

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