The appearance of weak ferromagnetism of hexagonal stabilized ErFeO3 thin film

Hexagonal ErFeO
₃
thin films were fabricated by a pulsed laser deposition method. A high-field magnetization measurement and the Mössbauer spectroscopy under a magnetic field were conducted. It revealed that the magnetic moment of Fe ion lay almost in the ab plane of the thin film forming the 120° structure. The obtained spectrum was explained with the coexistence of two domains with the opposite cant direction of the net magnetic moments along the c axis. The increase of the quadrupole coupling constant with a magnetic field would suggest the displacement of Fe ion by a magnetic field.