Augmentation of coercivity in nanocrystalline SrRuO3 thin film and its spin glass behavior

SrRuO3 films were prepared using pulsed laser deposition on different substrates (z-cut Quartz, (001) SrTiO3 and (001) LaAlO3) in this work. We have observed greatly enhanced perpendicular coercivity over 2 T in nanocrystalline SrRuO3 thin films with a thickness of 60 nm deposited at 600 °C on quartz substrates compared to epitaxial thin films (60 nm) on (001) SrTiO3 and (001) LaAlO3 substrates. Our experiments have also shown that a lattice strain may result in reduced Curie temperature and enhanced saturation magnetization. The spin glass like behavior is observed in the nanocrystalline thin films. The augmentation of the coercivity is possibly associated with nanocrystalline nature and the spin glass like phenomena in the films.