Paramagnetic Zn(_1-x)Mn_xO (0.00≤x≤0.06) nanoparticles prepared by the coprecipitation method

The Zn1-xMnxO (0.00≤x≤0.06) samples have been synthesized in the form of powder by the coprecipitation method at low temperature using Zn(CH₃COO)₂. 2H₂O and Mn(CH₃COO)₂. 4H₂O powders, as well as HCl and NH₄OH solutions as starting materials. Characterization was conducted using XRD, TEM, XRF, FTIR and VSM. The result shows that the Zn(_1-x)Mn_xO (0.00≤x≤0.06) nanoparticles have the wurtzite phase with a hexagonal structure and particle sizes ranging from 17.48 to 118.83 nm. In a qualitative analysis of XRF, the peaks that confirm the existence of the manganese element in Mn-doped ZnO samples were observed. Meanwhile, FTIR test result shows that there are peaks at around 500 cm^-1 and 400 cm^-1 in the FTIR spectra for Mn doped ZnO samples which clearly reveal the existence of the (Zn, Mn)-O strain mode. The (Zn, Mn)-O absorption peak positions have shifted to a lower wave number with increasing Mn doping content. The peak intensity is also lower if compared to that of the ZnO sample without doping. From the VSM test, it is shown that Zn(_1-x)MnxO (0.00≤x≤0.06) nanoparticles are all paramagnetic having monotonically increased susceptibility as increasing Mn content.