6533b82cfe1ef96bd128feca
RESEARCH PRODUCT
Magnetoresistivity and crystal structure of epitaxial La0.67Ca0.33MnO3 films
W. WesterburgF. MartinGerhard JakobH. Adriansubject
Tetragonal crystal systemMaterials scienceCondensed matter physicsScanning electron microscopeCrystal structureSputter depositionThin filmCubic crystal systemCondensed Matter PhysicsPolaronEpitaxyElectronic Optical and Magnetic Materialsdescription
Abstract We investigated thin-film growth of doped manganites by sputter deposition on SrTiO 3 (1 0 0), MgO (1 0 0) and r -plane Al 2 O 3 (1 0 1¯2) substrates and found an in-plane-oriented growth. The unit cell of the films showed distortions from the simple cubic perovskite structure, represented by a tetragonal unit cell with a′ = b′ = √2 a ; c′ = 2 a . By scanning electron microscopy we investigated the growth morphology of the films. We determined the magnetotransport properties above and below room temperature. Transport at high temperatures is best described by polaron hopping.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-01-01 | Journal of Magnetism and Magnetic Materials |