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Journal articles
Magnetism of CoFe$_2$O$_4$ ultrathin films on MgAl$_2$O$_4$ driven by epitaxial strain
Abstract : We report on the correlations between magnetic anisotropy and strain state in CoFe$_2$O$_4$ ultrathin films grown on MgAl$_2$O$_4$(100) and MgAl$_2$O$_4$(111) substrates. By local strain analysis using the geometric phase method, a significant in-plane compressive strain is observed for the (001) orientation while a full relaxation is detected for the (111) orientation. The relaxation process in CoFe$_2$O$_4$(111) layers induces interface dislocations and a large amount of antiphase boundaries while a pseudomorphic growth is observed for the (001) direction, decreasing significantly the density of antiphase boundaries. By comparing the magnetoelastic energy terms, the correlation between strain state and resultant magnetization is discussed.
Cited literature [22 references]
https://hal-cea.archives-ouvertes.fr/cea-01481038
Contributor : Dominique Girard <>
Submitted on : Tuesday, February 13, 2018 - 3:21:02 PM
Last modification on : Friday, November 6, 2020 - 11:24:05 AM
Long-term archiving on: : Monday, May 14, 2018 - 12:34:50 PM
Contributor : Dominique Girard <>
Submitted on : Tuesday, February 13, 2018 - 3:21:02 PM
Last modification on : Friday, November 6, 2020 - 11:24:05 AM
Long-term archiving on: : Monday, May 14, 2018 - 12:34:50 PM
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