Please use this identifier to cite or link to this item:
|Title:||Strong correlation between ferromagnetism and oxygen deficiency in Cr-doped In2 O3-δ nanostructures|
|Citation:||Xing, G.Z., Yi, J.B., Wang, D.D., Liao, L., Yu, T., Shen, Z.X., Huan, C.H.A., Sum, T.C., Ding, J., Wu, T. (2009-05-05). Strong correlation between ferromagnetism and oxygen deficiency in Cr-doped In2 O3-δ nanostructures. Physical Review B - Condensed Matter and Materials Physics 79 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.79.174406|
|Abstract:||Single-crystalline Cr-doped In2 O3-δ nanostructures with diverse morphologies including nanotowers, nanowires, and octahedrons are synthesized by using a vapor transport method. X-ray photoelectron spectroscopy results indicate that the as-grown samples contain 3 at.% Cr and are significantly oxygen deficient. The large surface-to-volume ratio in the nanostructures enhances their susceptibility to the postsynthesis treatments; high-temperature annealing in air boosts the oxygen contents in the samples, which is accompanied by a weakened defect-related emission in the photoluminescence spectra. Magnetization measurements on the as-grown and the annealed nanostructures suggest room-temperature ferromagnetism, and importantly the ferromagnetism is stronger in samples with higher oxygen deficiency. Electronic band alterations as a result of the Cr doping and the oxygen vacancies as well as the formation of bound magnetic polarons are suggested to play important roles in stabilizing the long-range ferromagnetism. © 2009 The 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 Jul 14, 2018
WEB OF SCIENCETM
checked on Jun 19, 2018
checked on Apr 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.