The Pulsed Laser Deposition (PLD) work station is manufactured by SURFACE systems+technology GmbH & Co. KG and is used for preparation of epitaxial thin films, especially advanced oxide layers, having the major advantage of stoichiometric material transfer from a target to the substrate.
-2 deposition chambers, each with 4-target carousels;
– KrF excimer laser with 248 nm wavelength,
– repetition rate of 1 – 10 Hz,
– maximum energy of 700 mJ;
– control of laser fluence;
– substrate heating up to 1000 °C;
– control of working gases pressure;
Applications: One reaction chamber is used to deposit ferroelectric layers based on perovskites and other metal oxides (e.g., doped ZnO, HfO2) (has also in-situ reflection high-energy electron diffraction (RHEED) capabilities), whilst the other chamber is used to prepare superconducting thin films (e.g. YBa2Cu3O7) and heterostructures of superconductor/ferromagnet (e.g. YBa2Cu3O7/CaRuO3). The superconducting and ferromagnetic properties of the thin films can be optimized by varying the deposition parameters such as the number of pulses, fluence, temperature etc.
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