Exotic magnetic anisotropy map in epitaxial La_(0.7)Ca_(0.3)MnO_(3) films on BaTiO_(3)
| dc.contributor.author | Nemes, Norbert Marcel | |
| dc.contributor.author | Tornos, J. | |
| dc.contributor.author | León Yebra, Carlos | |
| dc.contributor.author | Santamaría Sánchez-Barriga, Jacobo | |
| dc.date.accessioned | 2023-06-20T03:50:54Z | |
| dc.date.available | 2023-06-20T03:50:54Z | |
| dc.date.issued | 2011-10-04 | |
| dc.description | © 2011 American Physical Society. Artículo firmado por 13 autores. We acknowledge financial support from MICINN grants MAT2008-06517-C02-01, CSD2009-00013, MAT2008-06517-C02-02, and PI2010-60E013 and provision of beamtime by the European Synchrotron Radiation Facility. | |
| dc.description.abstract | We report the observation between 40 and 120 K of anomalous magnetic hysteresis loops in thin epitaxial films of La_(0.7)Ca_(0.3)MnO_(3) grown on ferroelectric BaTiO_(3). These hysteresis loops display extremely unusual features: after switching at coercivity, the magnetization overshoots the eventual high-field value. We study the strains in the film and substrate with x-ray diffraction and propose a model of two magnetic moment populations with different magnetoelastic anisotropies. The relative weights of both populations can be estimated by comparison with twin samples of La_(0.7)Ca_(0.3)MnO_(3) films on nonferroelectric SrTiO_(3). We propose that the observed magnetization overshoots the result from differences in the magnetostriction balance as the applied magnetic field increases. The picture of a nonuniform strain field in La_(0.7)Ca_(0.3)MnO_(3) on BaTiO_(3), caused by the corrugation of the ferroelectric domains in the rhombohedric phase of BaTiO_(3), is compatible with the magnetic granular behavior observed in the temperature and field dependences of the magnetization as well as in the low temperature magnetoresistance exhibited by the epitaxial film. | |
| dc.description.department | Depto. de Estructura de la Materia, Física Térmica y Electrónica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | MICINN | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/30113 | |
| dc.identifier.doi | 10.1103/PhysRevB.84.134402 | |
| dc.identifier.issn | 1098-0121 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1103/PhysRevB.84.134402 | |
| dc.identifier.relatedurl | http://journals.aps.org/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/44550 | |
| dc.issue.number | 13 | |
| dc.journal.title | Physical review B | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society | |
| dc.relation.projectID | MAT2008-06517-C02-01 | |
| dc.relation.projectID | CSD2009-00013 | |
| dc.relation.projectID | MAT2008-06517-C02-02 | |
| dc.relation.projectID | PI2010-60E013 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 537 | |
| dc.subject.keyword | Thin-films | |
| dc.subject.keyword | Tunnel-junctions | |
| dc.subject.keyword | Strain | |
| dc.subject.keyword | Magnetoresistance | |
| dc.subject.keyword | Heterostructures | |
| dc.subject.keyword | Temperature | |
| dc.subject.keyword | Dependence | |
| dc.subject.keyword | Stress. | |
| dc.subject.ucm | Electricidad | |
| dc.subject.ucm | Electrónica (Física) | |
| dc.subject.unesco | 2202.03 Electricidad | |
| dc.title | Exotic magnetic anisotropy map in epitaxial La_(0.7)Ca_(0.3)MnO_(3) films on BaTiO_(3) | |
| dc.type | journal article | |
| dc.volume.number | 84 | |
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