Microstructural Effects of Mn2+ ions in ZnO Nanoparticles

作者：Rajeswari P; Dhanuskodi S^*

来源：Crystal Research and Technology, 2013, 48(9): 589-598.

DOI：10.1002/crat.201300102

• Semiconductors
• Chemical synthesis
• X-ray diffraction
• Microstructure

Semiconducting ZnO nanoparticles with manganese content 0 at. %, 5 at. % and 10 at. % were prepared by co-precipitation technique and XRD reveals that the average crystallite size D is 10.2 nm, 7.62 nm and 7.06 nm respectively. The individual contributions of the size and strain to the XRD peak broadening were investigated by Williamson-Hall (W-H) analysis. The strain, stress and energy density were calculated more precisely by uniform deformation model (UDM), uniform stress deformation model (USDM), uniform deformation energy density model (UDEDM) and size-strain plot (SSP) method. The average particle size from HRTEM analysis is 13 +/- 2 nm. The evaluated average crystallite size from the W-H analysis and SSP method is commensurate with the particle size from HRTEM. Diamagnetic to ferromagnetic phase transition observed is interpreted interms of the anisotropic strain due to the dopant.

• 出版日期2013-9