Ferromagnetism and magneto-dielectric effect in insulating LaBiMn4/3Co2/3O6 thin films
arXiv:0801.3321 · doi:10.1063/1.2842409
Abstract
High quality epitaxial thin films of LaBiMn4/3Co2/3O6 perovskite were fabricated on (001)-oriented SrTiO3 and LaAlO3 substrates by the pulsed laser deposition technique. Magnetization measurements reveal a strong magnetic anisotropy and a ferromagnetic behavior that is in agreement with a super-exchange interaction between Mn4+ and Co2+ ions, which are randomly distributed in the B-site. A distinct anomaly is observed in the dielectric measurements at 130K corresponding to the onset of the magnetic ordering, suggesting a coupling. Above this temperature, the extrinsic Maxwell-Wagner effect is dominating. Theses results are explained using the Raman spectroscopic studies indicating a weak spin-lattice interaction around this magnetic transition.
arXiv commentSubmitted to Appl. Phys. Lett. (2008)
References in corpus (1)
Cited by in corpus (3)
- Long-range Ni/Mn structural order in epitaxial double perovskite La2NiMnO6 thin films
- Influence of Ni/Mn cation order on the spin-phonon coupling in multifunctional La2NiMnO6 epitaxial films by polarized Raman spectroscopy
- Interfacial contribution to the dielectric response in semiconducting LaBiMn4/3Co2/3O6