Cobalt-doped ZnO – a room temperature dilute magnetic semiconductor

2005 ◽  
Vol 247 (1-4) ◽  
pp. 493-496 ◽  
Author(s):  
C.B. Fitzgerald ◽  
M. Venkatesan ◽  
J.G. Lunney ◽  
L.S. Dorneles ◽  
J.M.D. Coey
Keyword(s):  
Dilute Magnetic Semiconductor ◽  
Room Temperature ◽  
Magnetic Semiconductor ◽  
Doped Zno

Graphene Activating Room-Temperature Ferromagnetic Exchange in Cobalt-Doped ZnO Dilute Magnetic Semiconductor Quantum Dots

ACS Nano ◽  
2014 ◽  
Vol 8 (10) ◽  
pp. 10589-10596 ◽  
Author(s):  
Zhihu Sun ◽  
Xiaoyu Yang ◽  
Chao Wang ◽  
Tao Yao ◽  
Liang Cai ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dilute Magnetic Semiconductor ◽  
Room Temperature ◽  
Magnetic Semiconductor ◽  
Semiconductor Quantum Dots ◽  
Ferromagnetic Exchange ◽  
Doped Zno

Electronic Structure and Magnetic Properties of Ti-doped ZnO

2009 ◽  
Vol 1183 ◽  
Author(s):  
Soumia Lardjane ◽  
Ghouti Merad ◽  
Houda Imane Faraoun
Keyword(s):  
Density Functional ◽  
Room Temperature ◽  
Magnetic Semiconductor ◽  
Magnetic Element ◽  
Functional Theory ◽  
Magnetic Structures ◽  
Spintronic Devices ◽  
The Density Functional Theory ◽  
Doped Zno ◽  
Ferromagnetic Ordering

AbstractRecent experiments suggest that Ti doped ZnO can be a promising room temperature dilute magnetic semiconductor (DMS) and a potentially useful material for spintronic devices. Furthermore, the fact that Ti doped ZnO shows ferromagnetic behaviour despite it contains no magnetic element makes this system good candidate for theoretical investigation regarding the controversies about the origin of ferromagnetic ordering in TM-doped ZnO. In this work, the density functional theory (DFT) is used to calculate the electronic and magnetic structures of Ti-doped ZnO. The obtained results are used to discuss the origin of the ferromagnetism, and the contribution of different atoms in the magnetic moment.

Structural, optical and magnetic properties of a dilute magnetic semiconductor based on Ga-doped ZnO and Co

2020 ◽  
Vol 35 (10) ◽  
pp. 105003
Author(s):  
A Sh Asvarov ◽  
A V Butashin ◽  
V M Kanevsky ◽  
A E Muslimov ◽  
N S Perov ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Dilute Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Optical And Magnetic Properties ◽  
Doped Zno

Room temperature ferromagnetism of Fe-doped ZnO and MgO thin films prepared by ink-jet printing

2012 ◽  
Vol 1394 ◽  
Author(s):  
Mei Fang ◽  
Wolfgang Voit ◽  
Adrica Kyndiah ◽  
Yan Wu ◽  
Lyubov Belova ◽  
...  
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Diluted Magnetic Semiconductor ◽  
Room Temperature Ferromagnetism ◽  
Magnetic Semiconductor ◽  
Ink Jet ◽  
Jet Printing ◽  
Doped Zno ◽  
Diluted Magnetic ◽  
Magnetic Insulator

ABSTRACTRoom temperature magnetic properties of un-doped, as well as 10 at.% Fe-doped ZnO and MgO single-pass layer of ink-jet printed thin films have been investigated to obtain insight into the role of the band gaps and mechanisms for the origin of ferromagnetic order in these materials. It is found that on doping with Fe, the saturation magnetization is enhanced by several-fold in both systems when compared with the respective un-doped thin films. For a “28 nm thick film of Fe-doped ZnO (Diluted Magnetic Semiconductor, DMS) we observe an enhanced moment of 0.465μB /Fe atom while it is around 0.111μB/Fe atom for the doped MgO (Diluted Magnetic Insulator, DMI) film of comparable thickness. Also, the pure ZnO is far more ferromagnetic than pure MgO at comparable low film thicknesses which can be attributed to defect induced magnetism originating from cat-ion vacancies. However, the film thickness dependence of the magnetization and the defect concentrations are found to be significantly different in the two systems so that a comparison of the magnetism becomes more complex for thicker films.

Exciting Dilute Magnetic Semiconductor: Copper-Doped ZnO

2012 ◽  
Vol 26 (1) ◽  
pp. 187-195 ◽  
Author(s):  
S. Karamat ◽  
R. S. Rawat ◽  
T. L. Tan ◽  
P. Lee ◽  
S. V. Springham ◽  
...  
Keyword(s):  
Dilute Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Doped Zno
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