Studies on structural, optical and magnetic properties of (Ru, Mn) codoped ZnO nanostructures

International Conference on Advances in Materials and Manufacturing Applications 2017

Aranganayagam, K.R.^1 ; Senthilkumaar, S.^2 ; Ganapathi Subramaniam, N.^3

Department of Chemistry, Kumaraguru College of Technology, Coimbatore, Tamilnadu

641049, India^1

Advanced Materials Research Laboratory, Department of Chemistry, PSG College of Technology, Coimbatore, Tamilnadu

641004, India^2

Quantum Functional Semiconductor Research Centre (QSRC), Dongguk University-Seoul, Seoul, Korea, Republic of^3

关键词: Average particle size;    Diffraction peaks;    Energy dispersive X ray spectroscopy;    Green emission peaks;    Hexagonal wurtzite structure;    High-resolution scanning electron microscopies;    SQUID magnetometers;    Synthesized materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012009/pdf
DOI  :  10.1088/1757-899X/310/1/012009

来源: IOP

【 摘 要 】

Ruthenium and manganese codoped ZnO (RuxMn0.01Zn0.99-xO; x = 0.01, 0.02 and 0.03) were synthesized by sol-gel method via ultrasonication. The effects of codoping on structural, microstructural, optical and magnetic properties of the as-synthesized materials were characterized through X-ray diffraction (XRD), high resolution scanning electron microscopy (HRSEM), high resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDS), photoluminescence (PL) and SQUID magnetometer, respectively. From the XRD pattern, it is evident that all the diffraction peaks can be indexed to the hexagonal wurtzite structure and shows the incorporation of dopants ie. Ru and Mn are substituted in the ZnO lattice. Nanosphere like morphology was observed in HRTEM analysis and the average particle sizes are found to be 20-30 nm, which are good agreement with the XRD crystallite size by Scherrer formula. Photoluminescence (PL) studies were carried out to investigate the optical properties of the as-synthesized materials and the defects related strong green emission peaks was observed in the TM codoped ZnO samples. It can be clearly seen from SQUID results, the loop is linear with the field indicating the presence of paramagnetism / anti ferromagnetism in the samples.