Concept (IMAGE) Osaka University Caption This is the concept of the study. The 3D Fe3O4(100) nanowire of 10 nm length scale on 3D MgO nanotemplate were produced using original nanofabrication techniques. The ultrasmall nanowire exhibited a prominent Verwey transition with lower defect concentration due to 3D nanoconfinement effect. Credit Osaka University Usage Restrictions None License Licensed 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.