Role Of Nano Size Particle Assembly In Ferromagnetism Of Mn Doped ZnO Pellets

摘要

4 at(percent) Mn doped ZnO samples were synthesized by solid-state reaction technique. Structural and magnetic properties were explored. The sample contains a secondary phase of ZnMn_(2)O_(4) that has transition temperature around 40 K. It shows room temperature (RT) ferromagnetism. The ferromagnetic (FM) part of magnetization is successfully decoupled from PM counterpart by mathematical modeling. The field and temperature dependent magnetization measurements confirm the intrinsic FM nature of the sample. Particle size distribution in nanometer length scale is responsible for typical behavior of temperature dependent magnetization curve.