Home > Articles > Published articles > High magnetic coercivity in nanostructured Mn3O4 thin films obtained by chemical vapor deposition |
Additional title: | High low-temperature coercivity in Mn3O4 thin films obtained by chemical vapor deposition |
Date: | 2019 |
Abstract: | Nanostructured α-MnO (haussmannite) thin films consisting of evenly interconnected nanoaggregates were prepared on Si(100) substrates by chemical vapor deposition from a Mn(II) diketonate-diamine precursor under different reaction atmospheres (dry vs wet O) and total operating pressures. The combination of chemico-physical results obtained by the joint use of complementary techniques enabled us to demonstrate the obtainment of high-purity MnO materials free from other manganese oxide phases, characterized by controllable structural and morphological characteristics as a function of the adopted processing conditions. Magnetic properties were investigated by analyzing temperature dependence (i. e. , field-cooled and zero-field-cooled measurements) and field-dependence of the magnetization behavior. The obtained films show bulk-like magnetic properties, together with extraordinarily high low-temperature in-plane coercivities (up to ∼1 T). The possibility to tailor these values by varying the content of microstructural defects may foster the implementation of the obtained films in eventual technological applications. |
Grants: | Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Ministerio de Economía y Competitividad ENE2017-85087-C3-3-R Ministerio de Economía y Competitividad SEV-2017-0706 |
Note: | El títol alternatiu correspon al preprint de l'article publicat. |
Note: | Altres ajuts: Funding from CERCA Programme/Generalitat de Catalunya is also acknowledged. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program. |
Rights: | Tots els drets reservats. |
Language: | Anglès |
Document: | Article ; recerca ; Versió sotmesa a revisió |
Subject: | Mn3O4 ; Thin films ; Chemical vapor deposition ; Magnetic properties ; Coercivity |
Published in: | ACS applied nano materials, Vol. 2, issue 3 (March 2019) , p. 1704-1712, ISSN 2574-0970 |
Preprint 24 p, 1.1 MB |