Abstract
Ferromagnetic resonance (FMR) was performed at X-band (9.6 GHz) on spherical samples of polycrystalline Ni–Zr-substituted non-stoichiometric barium ferrite with several different substitution fractions and heat-treatment temperatures in the temperature range 110–295 K. Large shifts in the FMR line positions and linewidths were observed as functions of temperature in these samples; however, their temperature variations were observed to be opposite to each other. This is explained to be due to the large anisotropic nature of the samples. The standard theory of FMR was invoked to provide an explanation of the data obtained.
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