RT Journal Article
T1 Magnetoelastic coupling in La_(0.7)Ca_(0.3)MnO_(3)/BaTiO_(3) ultrathin films
A1 Alberca, A.
A1 Nemes, Norbert Marcel
A1 Mompean, F. J.
A1 Fehér, T.
A1 Simón, F.
A1 Tornos, J.
A1 León Yebra, Carlos
A1 Munuera, C.
A1 Kirby, B. J.
A1 Fitzsimmons, M. R.
A1 Hernando Grande, Antonio
A1 Santamaría Sánchez-Barriga, Jacobo
A1 García Hernández, M.
AB The magnetism of La_(0.7)Ca_(0.3)MnO_(3) (LCMO) epitaxial thin films grown on SrTiO_(3) (STO) and BaTiO_(3) (BTO) substrates is studied using polarized neutron reflectometry (PNR) and  ferromagnetic resonance (FMR) techniques. In LCMO/BTO, PNR reveals a strongly suppressed magnetization of 300 kA/m, equivalent to a magnetic moment of 2 μB/Mn, throughout the LCMO layer, amounting to half the expected value. The largest suppression occurs near the interface with BTO, with magnetization values of 50 kA/m, equivalent to 0.3 μB/Mn. FMR is observable at 8.9 GHz only around the [110] crystallographic direction in thin LCMO/BTO. The resonance barely shifts as the applied field is rotated away from [110]. The FMR results are analyzed in terms of magnetoelastic anisotropy and compared to LCMO/STO grown under the same conditions. A two-layer magnetization model is proposed, based on strong out-of-plane anisotropy near the BTO interface and shown to qualitatively explain the main characteristics of the FMR results.
PB American Physical Society
SN 1098-0121
YR 2013
FD 2013-10-11
LK https://hdl.handle.net/20.500.14352/34770
UL https://hdl.handle.net/20.500.14352/34770
LA eng
NO © 2013 American Physical Society. We thank María José Calderón for useful discussions. We acknowledge funding from the Spanish Ministry for Science and Innovation through Grants No. MAT2011-27470-C02-01, No. MAT2011-27470-C02-02, and No. CSD2009-00013. Work supported by the European Research Council Starting Grant No. ERC-259374-Sylo and by the Office of Basic Energy Science (BES), U.S. Department of Energy (DOE), BES-Department of Materials Science funded by the DOE’s Office of BES, Division of Materials Research under Grant No. DE FG03-87ER-45332 and Hungarian OTKA Grants K107228 and CNK80991. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract No. DE-AC52-06NA25396.
NO Ministerio de Ciencia e Innovación (MICINN)
NO European Research Council Starting
NO Office of Basic Energy Science (BES)
NO U.S. Department of Energy (DOE)
NO BES-Department of Materials Science funded by the DOE’s Office of BES, Division of Materials Research
NO Hungarian OTKA
NO Los Alamos National Laboratory
DS Docta Complutense
RD 6 abr 2025