Author:
Wang Feng ,Lin Wen ,Wang Li-Zi ,Ge Yong-Ming ,Zhang Xiao-Ting ,Lin Hai-Rong ,Huang Wei-Wei ,Huang Jun-Qin ,W. Cao , ,
Abstract
Cux Zn1-xO were synthesized via the solid-state reaction route. Ferromagnetism was detected when the Cu percentage was bigger than 3%. The compounds were found to be the N-type semiconductors with a carrier concentration of 1015 cm-3. The DFT+U method was employed to calculate the magnetic exchange coupling of the Cu2+O2-Cu2+, Cu2+VoCu2+, Cu2+Vo+Cu2+, Cu2+Vo++Cu2+ in the CuZnO system, where Vo denoted the vacancy of oxygen. Different bound charge transfer schemes between the Vo and Cu2+ ions were revealed. The origin of the ferromagnetism was determined within the framework of the Cu2+Vo++Cu2+ bound magnetic polarons.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Cited by
7 articles.
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