Effects of Co concentration and annealing on the magnetic properties of Co-doped ZnO films: Role of oxygen vacancies on the ferromagnetic ordering

2020 ◽  
Vol 835 ◽  
pp. 155287 ◽  
Author(s):  
B. Salameh ◽  
A.M. Alsmadi ◽  
M. Shatnawi
Keyword(s):  
Magnetic Properties ◽  
Oxygen Vacancies ◽  
Zno Films ◽  
Co Concentration ◽  
Doped Zno ◽  
Ferromagnetic Ordering ◽  
Co Doped

Structural, optical and magnetic properties of Co-doped ZnO films

2006 ◽  
Vol 296 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Xue-Chao Liu ◽  
Er-Wei Shi ◽  
Zhi-Zhan Chen ◽  
Hua-Wei Zhang ◽  
Li-Xin Song ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Zno Films ◽  
Optical And Magnetic Properties ◽  
Doped Zno ◽  
Co Doped

Control of chemical states on magnetic properties of Co-doped ZnO films prepared by oxidizing evaporated Co-Zn film with different growth modes

2018 ◽  
Vol 44 (6) ◽  
pp. 7172-7179 ◽  
Author(s):  
Guojian Li ◽  
Huimin Wang ◽  
Yang Gao ◽  
Shiying Liu ◽  
Renxiu Tian ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Zno Films ◽  
Growth Modes ◽  
Chemical States ◽  
Doped Zno ◽  
Co Doped

Structural and magnetic properties of Co-doped ZnO films grown by pulse-injection MOCVD

2007 ◽  
Vol 316 (2) ◽  
pp. e203-e206 ◽  
Author(s):  
Anna Zukova ◽  
Arunas Teiserskis ◽  
V. Kazlauskiene ◽  
Y.K. Gun’ko ◽  
Sebastiaan van Dijken
Keyword(s):  
Magnetic Properties ◽  
Zno Films ◽  
Pulse Injection ◽  
Structural And Magnetic Properties ◽  
Doped Zno ◽  
Co Doped

Great influence of the oxygen vacancies on the ferromagnetism in the Co-doped ZnO films

2007 ◽  
Vol 253 (16) ◽  
pp. 6892-6895 ◽  
Author(s):  
Bao Huang ◽  
Deliang Zhu ◽  
Xiaocui Ma
Keyword(s):  
Oxygen Vacancies ◽  
Great Influence ◽  
Zno Films ◽  
Doped Zno ◽  
Co Doped

Effects of annealing and chemical doping on magnetic properties in Co-doped ZnO films

2008 ◽  
Vol 78 (10) ◽  
Author(s):  
Y. Fukuma ◽  
F. Odawara ◽  
H. Asada ◽  
T. Koyanagi
Keyword(s):  
Magnetic Properties ◽  
Zno Films ◽  
Chemical Doping ◽  
Doped Zno ◽  
Co Doped

scholarly journals Role of the microstructure on the magnetic properties of Co-doped ZnO nanoparticles

2005 ◽  
Vol 86 (10) ◽  
pp. 103113 ◽  
Author(s):  
B. Martínez ◽  
F. Sandiumenge ◽  
Ll. Balcells ◽  
J. Arbiol ◽  
F. Sibieude ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Zno Nanoparticles ◽  
Doped Zno ◽  
Co Doped

ROOM TEMPERATURE FERROMAGNETISM IN Mn DOPED ZnO SEMICONDUCTOR

2009 ◽  
Vol 23 (08) ◽  
pp. 2029-2040 ◽  
Author(s):  
R. K. SINGHAL ◽  
S. N. DOLIA ◽  
M. S. DHAWAN ◽  
S. K. GAUR ◽  
SUDHISH KUMAR ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Recent Past ◽  
Doped Zno ◽  
Ferromagnetic Ordering ◽  
Mn Doped ◽  
Zno Semiconductor ◽  
Ferromagnetic Contribution ◽  
Co Doped

Following the theoretical prediction of ferromagnetism in Mn - and Co -doped ZnO , there has been an immense experimental search for dilute semiconductors that show ferromagnetic ordering above room temperature, and several workers have reported ferromagnetism in bulk samples as well as in thin films of these materials. Mn -doped ZnO is the key material in this regard, which has been, in the recent past, shown to exhibit such magnetic properties. Many more such attempts have either led to failure or to a much lower Tc, and there have been a lot of confronting reports casting considerable doubts on the magnetism in this system. In order to shed some light, we have prepared and characterized dilute Mn -doped (2 and 4%) ZnO pellets. SQUID measurements confirm that the 2% sample shows above room temperature ferromagnetic ordering, the ferromagnetic contribution coming mainly from the bulk. The ordering gets completely quenched for 4% Mn doping. Upon cooling down, the 2% Mn doped sample showed further enhancement in magnetic properties appreciably. On the other hand, the 4% sample did not show any ferromagnetic ordering, even down to 5 K, and has been found to retain the paramagnetic character.

Microstructure and magnetic properties of Co-doped ZnO films deposited by gas flow sputtering

2010 ◽  
Vol 173 (1-3) ◽  
pp. 7-10 ◽  
Author(s):  
H. Sakuma ◽  
Y. Watanabe ◽  
K. Aramaki ◽  
K.S. Yun ◽  
K. Ishii ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Gas Flow ◽  
Zno Films ◽  
Doped Zno ◽  
Co Doped ◽  
Microstructure And Magnetic Properties

Effect of donor doping on the magnetic properties of Co-doped ZnO films

2007 ◽  
Vol 307 (1) ◽  
pp. 14-18 ◽  
Author(s):  
Xue-Chao Liu ◽  
Er-Wei Shi ◽  
Zhi-Zhan Chen ◽  
Hua-Wei Zhang ◽  
Bo-Yuan Chen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Zno Films ◽  
Donor Doping ◽  
Doped Zno ◽  
Co Doped

Electrical and magnetic properties of (Al, Co) co-doped ZnO films deposited by RF magnetron sputtering

2019 ◽  
Vol 359 ◽  
pp. 390-395 ◽  
Author(s):  
Hui Sun ◽  
Sheng-Chi Chen ◽  
Chung-Hsien Wang ◽  
Yu-Wei Lin ◽  
Chao-Kuang Wen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetron Sputtering ◽  
Rf Magnetron Sputtering ◽  
Zno Films ◽  
Electrical And Magnetic Properties ◽  
Doped Zno ◽  
Co Doped
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