... all of the measurements and dataanalysis, and drafted the manuscript. DG and DX made the conception and design of the manuscript. ZZ2 carried out the XPS measurements and dataanalysis. JLZ and ... inresearch of the doping ZnO materials. At first, RTFMhas been demonstrated for various kinds of TM-dopedZnO, for example, Mn [11], Co [12], Ni [13], and Fe[14]. However, the origin of their ... experiment and theroy, such as, Mn[5,6], Gd [7], and Cr [8,9]. Compared with GaN, ZnOhas a lot of outs tanding superiorities, as is known to all,which has a wide band-gap (3.37 eV at RT) and a...