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RESEARCH PRODUCT
Transversal thermovoltages of (1 1 9) Bi2Sr2CaCu2O8+δ thin films on vicinal (1 1 0) SrTiO3 substrates
U. FreyP. HaibachK.f. RenkH. AdrianF. Lankessubject
DiffractionMaterials scienceCondensed matter physicsEnergy Engineering and Power TechnologyCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsTransverse planeNuclear magnetic resonanceSputteringThermoelectric effectPerpendicularElectrical and Electronic EngineeringThin filmAnisotropyVicinaldescription
Abstract Biaxial textured (1 1 9) oriented Bi 2 Sr 2 CaCu 2 O 8+δ thin films were fabricated by DC-Magnetron sputtering on vicinal (1 1 0) SrTiO 3 substrates. The crystal orientation and stochiometry of the films were obtained from precise X-ray diffraction measurements in four-circle geometry. According to anisotropic transport measurements, the superconducting transition temperature is approximately 47 K and the normal state resistivities along two perpendicular paths differ by a factor of 13.5. Transversal thermoelectric effects were investigated by measuring thermovoltages transverse to temperature gradients parallel to the surface normal induced by pulsed laser irradiation. At room temperature and energy densities of 15 mJ/cm 2 thermovoltages up to 355 mV were obtained.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-08-01 | Physica C: Superconductivity |