Patent ID: 6799531
Filing Date: 2004-10-05
Classification: C23C,H01J

Abstract:
A magnetic field pulsed laser deposition (PLD) system for depositing a thin film on a substrate, the system comprising:a target; a member for holding the target; a laser source producing a laser beam that is focused on the target to ablate the target and form a plume having charged species and neutral species; a confinement magnetic device disposed proximate to the target such that the plume is influenced by a first magnetic field generated by the confinement magnetic device, the first magnetic field causing the plume to become more focused, thereby reducing the divergence thereof, the first magnetic field being substantially parallel to a plume ejection direction of the plume as it travels away from the target; and a deflection magnetic device arranged relative to the confinement magnetic device so that the focused plume discharged from the confinement magnetic device is deflected by a second magnetic field generated by the deflection magnetic device, the second magnetic field causing the charaed species in the plume to be deflected towards the substrate on which the charged species are deposited to form the thin film, the deflection magnetic device having a bend incorporated therein for deflecting the charged species away from an axis containing the plume ejection direction and onto the substrate wherein the confinement magnetic device is formed of a first permanent magnet and a second permanent magnet, each of the first and second permanent magnets having a north (N) pole and a south (S) pole, the first and second permanent magnets being arranged so that the respective north poles oppose one another and the respective south poles oppose one another.