Fig.3 (IMAGE) Osaka University Caption Transition properties of a high-quality magnetite ultrathin film. A clear change in resistivity was observed. Credit Ai I. Osaka et al. Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.