%0 Conference Paper %K Cooling %K Thin films %K Laser ablation %K Lanthanum compounds %K Crystal defects %K Metallic films %K Doppler effect %K Positron annihilation %A D.J Keeble %A S Madhukar %A B Nielsen %A A Krishnan %A P Asoka-Kumar %A S Aggarwal %A Ramamoorthy Ramesh %A E.H Poindexter %B Proceedings of the Materials Research Society Symposium - %D 1997 %G eng %I MRS, Warrendale, PA, United States %P 229-233 %S Materials Research Society Symposium - %T Vacancy related defects in La0.5Sr0.5CoO3-δ thin films %V 477