Study of the hydrogenation and re-heating of Co-doped ZnO and In 2 O 3 Nano composites

摘要: Nanocomposite samples of zinc oxide (ZnO) and indium (In2O3) doped with Co (at 1.5% molar concentration) are synthesized through conventional solid-state reaction technique. These taken in a quartz tube placed reduction furnace for post-annealing the presence hydrogen ~ 10 h at around 550 °C. The X-ray diffraction (XRD) study confirms formation hexagonal wurtzite structure ZnO, Zn0.985CO0.015O Zn0.985CO0.015O:H whereas cubic bixbyite In2O3, (In0.985CO0.015)2O3 (In0.985CO0.015)2O3:H samples. magnetization data investigations depict that both undoped ZnO In2O3 have small negative susceptibilities exhibit diamagnetic behavior room temperature. doping ions induces paramagnetic property Interestingly, hydrogenated exhibited perceptible ferromagnetic 300 K it overturns significantly after long air sintering. An effort has been made to fit experiential M-H Bound Magnetic Polaron (BMP) model. MATLAB-based simulations performed validate homogeneity particle distribution evinced SEM micrographs. A multivariate assessment viz. hierarchical cluster analysis is also executed corroborate strengthen experimental findings magnetic properties.