论文部分内容阅读
N-doped ZnO films were prepared in nitrogen plasma by pulsed laser deposition.Clear room temperature ferro-magnetism has been observed in the film prepared at a substrate temperature of 500 C.The structural characterizations of X-ray diffraction,Raman,and X-ray photoelectron spectroscopy confirm the substitution of O by N in ZnO,which has been considered to be the origin of the observed ferromagnetism.Furthermore,ferroelectricity has been observed at room temperature by piezoelectric force microscopy,indicating the potential multiferroic applications.
N-doped ZnO films were prepared in nitrogen plasma by pulsed laser deposition. Clear room temperature ferro-magnetism has been observed in the film prepared at a substrate temperature of 500 C. The structural characterizations of X-ray diffraction, Raman, and X- ray photoelectron spectroscopy confirm the substitution O by N in ZnO, which has been considered to be the origin of the observed ferromagnetism. Fermentmore, ferroelectricity has been observed at room temperature by piezoelectric force microscopy, indicating the potential multiferroic applications.