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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Extrinsic origin of ferromagnetism in ZnO and Zn
0.9
Co
0.1
O magnetic semiconductor films prepared by sol-gel technique
Applied Physics Letters, Volume 89, No. 12, Article 122504, Year 2006
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Description
We report on the origin of ferromagnetism in ZnO and Co-doped ZnO magnetic semiconductor films prepared by sol-gel technique on Si(100) and SiO 2 substrates. X-ray diffraction measurements have shown that ZnO and Co-doped ZnO have the expected wurtzite structure and a preferential orientation along the c axis. Optical transmittance measurements revealed that Co is incorporatec into the lattice, as Co 2+ substituting Zn 2+ ions. Magnetization measurements have shown room-temperature ferromagnetism for both ZnO and ZnO:Co films. After annealing, the magnetization curves recorded on free substrates show the same ferromagnetic behavior as the ZnO:Co film indicating that the ferromagnetism is extrinsic and due to external pollution. © 2006 American Institute of Physics.
Authors & Co-Authors
Belghazi, Y.
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Schmerber, Guy
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Colis, Silviu
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Rehspringer, Jean Luc
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Dinia, Aziz
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Berrada, Amal
Morocco, Rabat
Faculté Des Sciences Rabat
Statistics
Citations: 99
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1063/1.2355462
ISSN:
00036951
Research Areas
Environmental