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SuperconductingMgB2 thinfilmswerefabricatedbyatwo stepmethod.Boronthinfilmsweredepositedbypulsedlaser depositionfollowedbyanex situannealingprocess.Scanningelectronmicroscopy ,x raydiffraction ,resistanceandmagneticmeasurementswerecarriedouttostudytheeffectofthedepositiontemperatureofBfilmsonthesuperconductivityofMgB2 thinfilms.TheTonsetc andJcoftheMgB2 thinfilmsincreasewiththedecreaseofthedepositiontemperature.TheMgB2 thinfilmspre paredat3 0 0℃appeartohaveaTonsetc of3 9 5KandaJcof1 . 3× 1 0 7A·cm-2 at1 5Kinzerofield .







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