Electron magnetic resonance study of polycrystalline La0. 5Pb0. 5MnO3 Academic Article uri icon

abstract

  • Abstract Electron ferromagnetic (FMR)/paramagnetic (EPR) resonance spectra of La 0.5 Pb 0.5 MnO 3 powder sample have been investigated in the temperature range, 120–500 K. The spectra exhibit a gradual narrowing of the asymmetric FMR signals, upon increasing the temperature and approaching the Curie temperature, T c . The temperature dependence of linewidth ( ΔH pp ), g -factor and double integrated (DI) intensity of the resonance signals are discussed within the framework of existing models. Effects of non-resonant surface microwave absorption on the DI are also considered.

publication date

  • January 1, 1998