Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1595538 | Solid State Communications | 2008 | 5 Pages |
Abstract
Room-temperature ferromagnetism is found in polycrystalline CrxZn1−xO (0≤x≤0.0910≤x≤0.091) films prepared by magnetron sputtering. The saturated magnetization is ∼ 0.58 μB/Cr with x=0.012x=0.012, and decreases with increased Cr dopant. The Curie temperatures of the samples are above 400 K. First principles calculations based on density functional theory predict that the electrons of Cr-doped ZnO films at Fermi level are 100% spin polarized when two Zn sites are substituted by Cr atoms in the nearest neighbour configuration. The spin polarized carriers and the p–d hybridization between Cr and its four neighbouring O atoms are responsible for observed ferromagnetism.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Luyan Li, Hui Liu, Xiaoguang Luo, Xiao Zhang, Weihua Wang, Yahui Cheng, Qinggong Song,