Journal
SCRIPTA MATERIALIA
Volume 238, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2023.115745
Keywords
Laser deposition; Magnetic thin films; Epitaxial growth; Phase transformations
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In this study, high-quality Sr3Ru2O7 epitaxial thin films were successfully grown at a low temperature of 680 degrees C on SrTiO3 substrates by adjusting the oxygen partial pressure, which underwent a phase transition from SrRuO3 to Sr3Ru2O7 facilitated by the formation and development of oxygen and ruthenium vacancies.
The epitaxial growth of Sr3Ru2O7 thin films in the Ruddlesden-Popper type remains a challenge as the growth temperature required for a typical pulsed laser deposition (PLD) process can be as high as 1100 degrees C. In this study, high quality Sr3Ru2O7 epitaxial thin films were obtained using PLD with a single SrRuO3 target. By adjusting the oxygen partial pressure, the structure underwent a phase transition from SrRuO3 to Sr3Ru2O7 facilitated by the formation and development of oxygen and ruthenium vacancies. Remarkably, for the first time, high-quality Sr3Ru2O7 thin films with good crystalline quality were successfully grown at a low temperature of 680 degrees C on SrTiO3 substrates.
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