Abstract
Magnetic measurements, at different magnetic field strengths, on polycrystalline samples of the highly anisotropic ferromagnetic oxide SrRuO 3 show irreversibility between field cooled (FC) and zero field cooled (ZFC) magnetization, and a peak in M ZFC at low magnetic fields. AC susceptibility curve measured at 10 Oe and the ZFC susceptibility curve measured at 100 Oe are identical, showing a peak at T p=160 K compared to the T c=161 K. T p shifts to lower temperatures with increasing magnetic field and the peak is broadened and rounded off at higher magnetic fields. M FC and M ZFC are related through the coercivity. The irreversibility between M FC and M ZFC arises from the large magnetocrystalline anisotropy of the compound and not due to any spin-glass-like nature as reported for some other ordered magnetic systems.
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