SrRuO3 thin films have been grown in situ on single crystal LaAlO3 substrates and textured metal templates which contain an MgO layer produced by an ion-beam growth method. Deposition was made of oxygen partial pressure in a range from 50 m Torr to 250 m Torr with laser repetition rate of 5 Hz. Substrate temperature was between 600 °C and 800 °C. Dependence of out-of-plane and in-plane orientation of SrRuO3 thin films on pressure and growth temperature was investigated by X-ray diffraction. The surface morphology and grain growth behaviors of SrRuO3 thin films were analyzed by atomic force microscopy and scanning electron microscopy. In addition, the transverse magnetoresistance value in a field of 4 and 8 T was measured in temperature range of 50-200 K and the ferromagnetic transition at ∼140 K of SrRuO3 films on LaAlO3 was detected by resistivity measurement.
Bibliographical noteFunding Information:
This work was supported by support from center for applied superconductivity technology of the 21st century frontier R&D program funded by the Ministry of Science and Technology. One of the authors (KHK) is supported by the National Research Laboratory program (M10600000238) by the Korean Ministry of Science and Technology.
- Coated conductors
- Pulsed laser deposition
- SrRuO buffer layers