%0 Journal Article %K Thin films %K Annealing %K Substrates %K Permittivity %K Crystals %K Barium compounds %K Antiphase domain boundaries (ADB) %K Magnesia %K Ceramic materials %A H Li %A H Zheng %A L Salamanca-Riba %A Ramamoorthy Ramesh %A I Naumov %A K Rabe %B Applied Physics Letters %D 2002 %G eng %P 4398-4400 %R 10.1063/1.1523632 %T Origin of antiphase domain boundaries and their effect on the dielectric constant of Ba0.5Sr0.5TiO3 films grown on MgO substrates %V 81