Effect of Zinc on Crystal Structure and Magnetic Properties of Co1-xZnxFe2O4 Nanoparticles Synthesized by Coprecipitation Method

5th International Conference on Advanced Materials Sciences and Technology

Kiswanto, H.^1 ; Puspitasari, A.^1 ; Suharyadi, E.^1 ; Kato, T.^2 ; Iwata, S.^3

Department of Physic, Universitas Gadjah Mada, Yogyakarta, Indonesia^1

Departmen of Electronics, Nagoya University, Japan^2

Institute for Material and Systems for Sustainability, Nagoya University, Japan^3

关键词: Coprecipitation method;    Cubic spinel structure;    Fourier transform infrared;    Scherrers formula;    Structural and magnetic properties;    Synthesis temperatures;    Vibrating sample magnetometer;    X ray diffractometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012001/pdf
DOI  :  10.1088/1757-899X/367/1/012001

来源: IOP

【 摘 要 】

The effects of zinc (Zn) on the crystal structure and magnetic properties of Co1-xZnxFe2O4nanoparticles (NPs) were investigated. Co1-xZnxFe2O4NPs have been successfully synthesized by co-precipitation method with synthesis temperature of 70 °C and various of x from 0.2 to 0.8. The structural and magnetic properties were determined and characterized in detail by X-ray Diffractometer (XRD), Transmission Electron Microscope (TEM), Fourier Transform Infrared (FTIR) and vibrating sample magnetometer (VSM). X-ray Diffraction analysis showed that the samples had the single phase cubic spinel structure. The crystallite size of the samples was calculated by using Scherrer's formula within the range of 9.3 nm to 11.2 nm. The increase in lattice parameter from 8.179 Å to 8.212 Å by increasing zinc content as a result of the different ionic radii. The peak of FTIR spectra observed around 478 cm-1and 586 cm-1was assigned to vibration of octahedral and tetrahedral sites which confirmed the presence of the metal-oxide stretching band. The decrease in saturation magnetization (Ms) from 34.3 emu•g-1to 20.3 emu•g-1and the decrease in coercivity (Hc) from 674 Oe to 158 Oe are significantly affected by the increase of zinc content.