The effect of strain on nonlinear temperature dependence of resistivity in SrMoO3β and SrMoO3βxβNxβ films
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- Elsevier
Abstract
Highly oriented SrMoO3β thin films have been fabricated by pulsed laser deposition of SrMoO4β in hydrogen. The films are found to grow along the (1 0 0) direction on LaAlO3β (1 0 0) and SrTiO3β (1 0 0) substrates. The method has been extended for the fabrication of oxynitride thin films, using ammonia as the reducing medium. The resistivity measurements show nonlinear temperature dependent (Tn) behaviour in the temperature interval of 10β300 K. The conduction mechanism is largely affected by the strain due to the substrate lattice. A combination of T and T2 dependence of resistivity on temperature is observed for films having lesser lattice mismatch with the substrate. The X-ray photoelectron spectroscopic studies confirm the formation of SrMoO3β and SrMoO3βxβNxβ films