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http://hdl.handle.net/10773/20506
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Mota, D. A. | pt |
dc.contributor.author | Romaguera Barcelay, Y. | pt |
dc.contributor.author | Senos, A. M. R. | pt |
dc.contributor.author | Fernandes, C. M. | pt |
dc.contributor.author | Tavares, P. B. | pt |
dc.contributor.author | Gomes, I. T. | pt |
dc.contributor.author | Sa, P. | pt |
dc.contributor.author | Fernandes, L. | pt |
dc.contributor.author | Almeida, B. G. | pt |
dc.contributor.author | Figueiras, F. | pt |
dc.contributor.author | Mirzadeh Vaghefi, P. | pt |
dc.contributor.author | Amaral, V. S. | pt |
dc.contributor.author | Almeida, A. | pt |
dc.contributor.author | Perez de la Cruz, J. | pt |
dc.contributor.author | Agostinho Moreira, J. | pt |
dc.date.accessioned | 2017-12-07T19:49:27Z | - |
dc.date.issued | 2014 | pt |
dc.identifier.issn | 0022-3727 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/20506 | - |
dc.description.abstract | Epitaxial La0.7Sr0.3MnO3 (LSMO) thin films, with different thicknesses ranging from 20 to 330 nm, were deposited on (1 0 0)-oriented strontium titanate (STO) substrates by pulsed laser deposition, with their structure and morphology characterized at room temperature. The magnetic and electric transport properties of the as-processed thin films reveal an abnormal behaviour in the temperature dependent magnetization M(T) below the antiferrodistortive STO phase transition (T-STO), and also an anomaly in the magnetoresistance and electrical resistivity close to the same temperature. Films with thickness <= 100 nm show an in-excess magnetization and pronounced changes in the coercivity due to the interface-mediated magnetoelastic coupling with antiferrodistortive domain wall movement occurring below T-STO. However, in thicker LSMO thin films, an in-defect magnetization is observed. This reversed behaviour can be understood with the emergence in the upper layer of the film, of a columnar structure needed to relax the elastic energy stored in the film, which leads to randomly oriented magnetic domain reconstructions. For enough high-applied magnetic fields, as thermodynamic equilibrium is reached, a full suppression of the anomalous magnetization occurs, wherein the temperature dependence of the magnetization starts to follow the expected Brillouin behaviour. | pt |
dc.language.iso | eng | pt |
dc.publisher | IOP PUBLISHING LTD | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/99415/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F80663%2F2011/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | LATTICE-DISTORTIONS | pt |
dc.subject | DIFFRACTION | pt |
dc.subject | MANGANITES | pt |
dc.subject | EPITAXY | pt |
dc.title | Unravelling the effect of SrTiO3 antiferrodistortive phase transition on the magnetic properties of La0.7Sr0.3MnO3 thin films | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.issue | 43 | pt |
degois.publication.title | JOURNAL OF PHYSICS D-APPLIED PHYSICS | pt |
degois.publication.volume | 47 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1088/0022-3727/47/43/435002 | pt |
dc.identifier.doi | 10.1088/0022-3727/47/43/435002 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Unravelling the effect of SrTiO3antiferrodistortive phase transition on the magnetic properties of La0.7Sr0.3MnO3thin films_10.10880022-37274743435002.pdf | 2.44 MB | Adobe PDF |
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