Article ID Journal Published Year Pages File Type
1647363 Materials Letters 2012 4 Pages PDF
Abstract

This work is addressed to studying GdMnO3 thin films, prepared by a chemical solution method on oriented Pt substrates. Alterations regarding structure and magnetic response of both ceramics and single crystals show that the behaviour of the as-prepared films can be understood by assuming a continuously changing of the in-plane stress state in the film induced by mechanical coupling with the substrate. The emerging of a ferromagnetic response in the thin films is a consequence of the structural deformations induced by matching both film and substrate during the growth process, which alters the balance between competitive antiferromagnetic and ferromagnetic interactions.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► GdMnO3 thin films were processed by sol-gel route on oriented substrates. ► Changing stress state induced by the substrate was evidenced through Raman spectra. ► Stress-induced ferromagnetic ordering was evidenced by magnetic measurements. ► Ferromagnetic ordering is a consequence of structural deformations. ► Distortion alters balance between magnetic interactions, according theoretical model.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
Authors
, , , , ,