The investigation of room temperature ferromagnetism in (1Â 0Â 0) oriented BaNb2O6 PLD films on LaAlO3 (1Â 0Â 0) substrate

► BaNb2O6 epitaxial films have been successfully grown on LaAlO3 (1 0 0) substrate by PLD. ► Room temperature ferromagnetism (RTFM) has been observed in all the samples. ► The observed RTFM in BaNb2O6 films is predominantly induced by oxygen vacancies. ► Ab inito calculations are performed to verify our prediction.