Enhanced electron-mediated ferromagnetism in Co-doped ZnO nanowires

2010 ◽  
Vol 108 (2) ◽  
pp. 023904 ◽  
Author(s):  
Eun-Ae Choi ◽  
Woo-Jin Lee ◽  
K. J. Chang
Keyword(s):  
Zno Nanowires ◽  
Doped Zno ◽  
Co Doped

Influence of Co Content on Raman and Photoluminescence Spectra of Co Doped ZnO Nanowires

2012 ◽  
Vol 28 (4) ◽  
pp. 313-316 ◽  
Author(s):  
Y.Q. Chang ◽  
P.W. Wang ◽  
S.L. Ni ◽  
Y. Long ◽  
X.D. Li
Keyword(s):  
Zno Nanowires ◽  
Photoluminescence Spectra ◽  
Doped Zno ◽  
Co Doped

Intense intra-3d luminescence and waveguide properties of single Co-doped ZnO nanowires

2013 ◽  
Vol 7 (10) ◽  
pp. 886-889 ◽  
Author(s):  
Sebastian Geburt ◽  
Robert Röder ◽  
Uwe Kaiser ◽  
Limei Chen ◽  
Manh-Hung Chu ◽  
...  
Keyword(s):  
Zno Nanowires ◽  
Doped Zno ◽  
Co Doped

DEFECT FORMATION AND MAGNETIC PROPERTIES OF Co-DOPED ZnO NANOWIRES

NANO ◽  
2013 ◽  
Vol 08 (02) ◽  
pp. 1350021 ◽  
Author(s):  
LI BIN SHI ◽  
GUO QUAN QI ◽  
YING FEI
Keyword(s):  
Magnetic Properties ◽  
Density Functional ◽  
Defect Formation ◽  
Density Functional Method ◽  
Zno Nanowires ◽  
Generalized Gradient ◽  
Surface Sites ◽  
Doped Zno ◽  
Formation Energies ◽  
Co Doped

The defect formation energies and magnetic properties in Co -doped ZnO nanowires (NWs) are studied using the first-principle density functional method within the generalized gradient approximation (GGA) and GGA + U schemes. It is found that Co impurity has lower formation energies in the surface sites, indicating that Co impurity occupies preferably surface sites of NWs. Ferromagnetic (FM) and antiferromagnetic (AFM) coupling are investigated by GGA and GGA + U methods. The results show that the AFM coupling in energy is lower than the FM coupling, which indicates that AFM coupling is more stable. The magnetic properties can be mediated by the vacancies [ VO(B) and VZn(B) ] and interstitials [ IZn(oct) ]. The stability of the FM and AFM can be explained by the Co 3d energy level coupling.

Magnetotransport in Co-Doped ZnO Nanowires

Nano Letters ◽  
2009 ◽  
Vol 9 (2) ◽  
pp. 892-896 ◽  
Author(s):  
Wenjie Liang ◽  
Benjamin D. Yuhas ◽  
Peidong Yang
Keyword(s):  
Zno Nanowires ◽  
Doped Zno ◽  
Co Doped

Synthesis and magnetic properties of Co-doped ZnO nanowires

2006 ◽  
Vol 99 (8) ◽  
pp. 08M113 ◽  
Author(s):  
Jingbiao Cui ◽  
Qi Zeng ◽  
Ursula J. Gibson
Keyword(s):  
Magnetic Properties ◽  
Zno Nanowires ◽  
Doped Zno ◽  
Co Doped
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