Please use this identifier to cite or link to this item:
|Title:||Reversible room-temperature ferromagnetism in Nb-doped SrTiO3 single crystals|
|Citation:||Liu, Z.Q., Lü, W.M., Lim, S.L., Qiu, X.P., Bao, N.N., Motapothula, M., Yi, J.B., Yang, M., Dhar, S., Venkatesan, T., Ariando (2013-06-18). Reversible room-temperature ferromagnetism in Nb-doped SrTiO3 single crystals. Physical Review B - Condensed Matter and Materials Physics 87 (22) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.87.220405|
|Abstract:||The search for oxide-based room-temperature ferromagnetism has been one of the holy grails in condensed matter physics. Room-temperature ferromagnetism observed in Nb-doped SrTiO3 single crystals is reported in this Rapid Communication. The ferromagnetism can be eliminated by air annealing (making the samples predominantly diamagnetic) and can be recovered by subsequent vacuum annealing. The temperature dependence of magnetic moment resembles the temperature dependence of carrier density, indicating that the magnetism is closely related to the free carriers. Our results suggest that the ferromagnetism is induced by oxygen vacancies. In addition, hysteretic magnetoresistance was observed for magnetic field parallel to the current, indicating that the magnetic moments are in the plane of the samples. The x-ray photoemission spectroscopy, the static time-of-flight and the dynamic secondary ion mass spectroscopy and proton induced x-ray emission measurements were performed to examine the magnetic impurities, showing that the observed ferromagnetism is unlikely due to any magnetic contaminant. © 2013 American Physical Society.|
|Source Title:||Physical Review B - Condensed Matter and Materials Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 21, 2018
WEB OF SCIENCETM
checked on Apr 30, 2018
checked on May 18, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.