Microwave processing of ZnO based dilute magnetic semiconductors

In the present work, polycrystalline ferromagnetic Zn
_0.95
Co
_0.05
O samples have been synthesized in a TM
₀₁₁
single mode cylindrical microwave resonant cavity operating at 2.45 GHz. The synthesized specimen is analyzed for its crystallographic and electronic structure along with magnetic and electron transport properties. The X-ray diffractogram and photoelectron spectroscopy of Zn
_0.95
Co
_0.05
O establish the incorporation of cobalt atoms into ZnO lattice. The room temperature magnetization study confirms the ferromagnetic ordering in the microwave processed highly resistive samples; which can be attributed to bound magnetic polarons model.