Ferromagnetism and increased ionicity in epitaxially grown TbMnO3 films
arXiv:0810.5137 · doi:10.1103/PhysRevB.79.014416
Abstract
Thin films of TbMnO3 have been grown on SrTiO3 substrates. The films grow under compressive strain and are only partially clamped to the substrate. This produces remarkable changes in the magnetic properties and, unlike the bulk material, the films display ferromagnetic interactions below the ordering temperature of ~40K. X-ray photoemission measurements in the films show that the Mn-3s splitting is 0.3eV larger than that of the bulk. Ab initio embedded cluster calculations yield Mn-3s splittings that are in agreement with the experiment and reveal that the larger observed values are due to a larger ionicity of the films.
arXiv commentREVTeX, 5 two-column pages, 4 EPS figures
References in corpus (10)
- Spin current and magneto-electric effect in non-collinear magnets
- Ferroelectricity in spiral magnets
- Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
- Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
- Spin-Orbit Coupling and Ion Displacements in Multiferroic TbMnO3
- First-principles study of improper ferroelectricity in TbMnO3
- Magnetodielectric coupling in Mn3O4
- New features in the phase diagram of TbMnO
- Magnetic and dielectric properties of YbMnO3 perovskite thin films
- Theoretical phase diagram of ultrathin films of incipient ferroelectrics
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- Anomalous Ferromagnetism in TbMnO3 Thin Films
- Strain-driven non-collinear magnetic ordering in orthorhombic epitaxial YMnO3 thin films
- Coexistence of coupled magnetic phases in epitaxial TbMnO3 films revealed by ultrafast optical spectroscopy
- Multiferroicity and Magnetoelectric Coupling in TbMnO3 Thin Films
- Double-exchange model study of multiferroic MnO perovskites