Pulsed Laser Deposition Tool
- August 3rd, 2010
In the pulsed laser deposition (PLD) lab, the primary focus is on the growth of complex oxide films like manganites, ferrites, titanates and ruthenates. There is a wealth of possible realization in this class of materials from ferromagnetism to ferroelectricity to superconductivity. Key objective of this lab is to realize multi-functionality, i.e., investigate or design thin films and heterostructures to achieve more than one principle function. Say for example electric field control of magnetism is an enticing possibility, based on which new magnetoelectric devices are possible.
In a typical pulsed laser deposition system, a high power pulsed laser ablates the thin film material from a ceramic target or single crystal with the substrate (typically hot) kept a few centimeters away from it. The ablated material appear in the form of a plume to the human eye which contains atoms, molecules, ions etc before it is deposited to the substrate. One of the many successes of this method lies in the stoichiometric, epitaxial deposition of the complex oxide films.