The analysis of the EPR spectra in ZnO: Mn nanocrystals using the derivative spectroscopy method
A method for computer processing of experimental EPR spectra using the derivative spectroscopy method is proposed. Application of the proposed method to a wide, structureless line of the EPR spectrum in ZnO: Mn nanocrystals obtained by the cryochemical method made it possible to isolate the components of the spectrum, associate them with Mn2+ ions. Application of the proposed method to the analysis of the EPR spectrum ZnO: Mn nanocrystal's obtained by ultrasonic pyrolysis of an aerosol with a different activator concentration after annealing made it possible to reveal the presence of an hyperfine structure of the EPR spectrum of Mn2+ ions, which are located in different local environments. The constants of the detected spectra are determined.