Room temperature ferromagnetism in Co doped ZnO thin film grown using spray pyrolysis

2013 ◽  
Author(s):  
Vikas Thakur ◽  
Urvashi Verma ◽  
U. P. Verma ◽  
P. Rajaram
Keyword(s):  
Thin Film ◽  
Spray Pyrolysis ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Thin Film ◽  
Doped Zno ◽  
Co Doped

The effects of heat treatment on room temperature ferromagnetism in a digitally Co doped ZnO thin film

2013 ◽  
Vol 9 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Sung-geun Kang ◽  
Youngrae Kim ◽  
Sarah Eunkyung Kim ◽  
Sungdong Kim
Keyword(s):  
Thin Film ◽  
Heat Treatment ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Thin Film ◽  
Doped Zno ◽  
Co Doped

The Structural, Electrical, Magnetic Properties of (Cu, Co) Co-Doped ZnO Thin Film

2014 ◽  
Vol 556-562 ◽  
pp. 429-432
Author(s):  
Ping Cao ◽  
Yue Bai ◽  
Zhi Qu
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Sol Gel ◽  
Hall Effect Measurement ◽  
Ferromagnetic Semiconductors ◽  
Zno Thin Film ◽  
Zno Film ◽  
Co Doping ◽  
Doped Zno ◽  
Co Doped

Successful synthesis of room-temperature ferromagnetic semiconductors, (Cu, Co) co-doped ZnO film is obtained by sol-gel method. It is found that the essential ingredient in achieving room-temperature ferromagnetism is Cu co-doping. By Hall-effect measurement ap-type conductivity was observed for the Cu co-doped films, which induced the room-temperature ferromagnetism.

The Room Temperature Ferromagnetism of (N, Co) Co-Doped ZnO Nanopaticles

2014 ◽  
Vol 577 ◽  
pp. 19-22
Author(s):  
Ping Cao ◽  
Yue Bai ◽  
Zhi Qu
Keyword(s):  
Zno Nanoparticles ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Crystal Lattices ◽  
Grown Sample ◽  
N Doping ◽  
Doped Zno ◽  
Zno Crystal ◽  
Zno Nanopaticles ◽  
Co Doped

Co-doped ZnO nanoparticles were fabricated by an electrodeposition method. The XPS results show Co ions have doped into the ZnO crystal lattices successfully. The as-grown sample has no ferromagnetism at room temperature. But after an ammine plasma treatment the room temperature ferromagnetism were detected on Co0.04Zn0.96O nanoparticles. The Hall measurement reveals after the treatment the resistivity increase by three orders of magnitude. Although the aspect conductivity is n type, some holes generated by N doping play an important role to induce the ferromagnetic properties for Co doped ZnO sample.

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