Raman study for E2 phonon of ZnO in Zn1−xMnxO nanoparticles

Raman scattering at room temperature is reported in ${\mathrm{Zn}}_{1-x}{\mathrm{Mn}}_x\mathrm{O}$ nanoparticles for the range of $0⩽x⩽0.15$ . The effect of compositional disorder is obtained by analyzing the broadening and asymmetry of the first-order $E_2\left(\text{high}\right)$ phonon mode. It is found that the Raman line shapes for the ZnO $E_2\left(\text{high}\right)$ phonon in ${\mathrm{Zn}}_{1-x}{\mathrm{Mn}}_x\mathrm{O}$ alloys can be well described by the spatial correlation model. It is shown that the substitutional disorder can introduce changes in the linewidth, line center position, and asymmetry of the first-order $E_2\left(\text{high}\right)$ phonon mode in ${\mathrm{Zn}}_{1-x}{\mathrm{Mn}}_x\mathrm{O}$ nanoparticles.