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Zn 1−x Er x O thin films have been fabricated on glass substrates by radiofrequency reactive magnetron sputtering. All the films were ferromagnetic at room temperature except for x=0 and the estimated magnetic moment per Er ion decreased with increasing Er concentration. The presence of any secondary phase was ruled out based on X-ray diffraction and X-ray photoelectron spectroscopy...
Fefv(SiO2)1-fv granular films were fabricated by rf sputtering (fv represents the Fe volume fraction). The microstructure, magnetic properties as well as the tunneling magnetoresistance effect (TMR) were systematically studied. It was found that the maximum TMR ratio is about −3.3% atfv = 0.33. Under the same condition, a series of (Fe100-x Cox)0.33(SiO2)0.67 were prepared. TMR value reaches −4...
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