Strain induced phase separation on La0.5Ca0.5MnO3 thin films

Antonakos, A.; Liarokapis, E.; Aydogdu, G. H.; Habermeier, H.-U.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Strain induced phase separation on La_0.5Ca_0.5MnO₃ thin films

MPS-Authors

/persons/resource/persons279749

Aydogdu, G. H.
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280017

Habermeier, H.-U.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Antonakos, A., Liarokapis, E., Aydogdu, G. H., & Habermeier, H.-U. (2011). Strain induced phase separation on La_0.5Ca_0.5MnO₃ thin films. Journal of Magnetism and Magnetic Materials, 323(5), 620-630.

Cite as: https://hdl.handle.net/21.11116/0000-000E-BE9D-C

Abstract

The effect of epitaxial strain on La(0.5)Ca(0.5)MnO(3) films of various thicknesses grown on SrTiO(3), SrLaAlO(4), and SrLaGaO(4) substrates is studied by Raman spectroscopy, magnetic, and resistivity measurements. The transport and magnetic properties as well as Raman spectra of the films are affected by epitaxial strains. The energy of the A(g)(2) mode and the tilting angle of the MnO(6) octahedra is affected by the strain imposed by the substrate. In the spectra of the films deposited on the (100) SrTiO(3) substrate strong Jahn-Teller (JT) modes appear, which couple with charge-ordering. In all other films these modes are suppressed and no additional Raman lines are present at low temperatures contrary to the bulk compound. The low frequency continuum scattering decreases at low temperatures indicating a coupling with both the charge and orbital transitions. Comparison of the Raman spectra with the magneto-transport properties suggests an interpretation in terms of a strain induced phase separation between ferromagnetic metallic and antiferromagnetic insulating states. (C) 2010 Elsevier B.V. All rights reserved.