Preparation and Studies on ZnO Nanoparticles Doped with Ni, Ca and Fe

Authors Srinivasan Kumar1, K.K. Sivakumar2 , Naol Dessalegn Dejene1, Temesgen Garoma1, Asagid Tadesse1

1Wollega University, Nekemte, Ethiopia

2Academy of Maritime Education and Training Deemed to be University, India

Issue Volume 13, Year 2021, Number 3
Dates Received 10 January 2021; revised manuscript received 15 June 2021; published online 25 June 2021
Citation Srinivasan Kumar, K.K. Sivakumar, Naol Dessalegn Dejene, et al., J. Nano- Electron. Phys. 13 No 3, 03003 (2021)
PACS Number(s) 78.67.Bf, 81.07. - b
Keywords Zinc oxide (10) , Co-precipitation (6) , Wurtzite, Optical properties (22) , Ferromagnetic (7) .

The nanostructures of metal oxides are playing a vital role in determining the characteristics such as magnetic, optical, and electrical properties. In this work, nanostructured ZnO based composites were prepared and their magnetic and optical properties were estimated. The as-prepared composite is composed of Zn0.09(Ni0.05Ca0.05)Fe0.01O (ZnNiCaFeO) using co-precipitation method followed by sintering process. To distinguish the role of composites, bare ZnO is also prepared, and its properties are compared with the composite material. Both ZnNiCaFeO) exhibited hexagonal wurtzite structure with the grain size of about 52 and 46 nm, respectively. Hexagonal nanorod structured morphology and the atomic percentage of the as-prepared composites are obtained from the FESEM and EDAX analysis, respectively. UV-Vis absorption spectra of the samples showed absorption peaks at 296 (ZnO) and 288 nm for ZnNiCaFeO NPs. Excitation wavelengths of the composite materials are also estimated from the PL studies. It is noted that composite ZnNiCaFeO exhibited ferromagnetic behavior with the significant magnetization values of 0.34914 emu/g. Thus, the obtained results indicate the composites can be used in soft magnetic application as well as in various optical.

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