Abstract

Low temperature hysteresis loops have been measured on compositions of the spinel series Fe 3- x Ti x O 4, 0⩽ x⩽1, with x=0.4, 0.5, 0.6 and 0.8. All compounds studied exhibit an anomaly of the hysteresis parameters in the temperature range 40–80 K below which a marked effect of field cooling on the hysteresis loops is observed.

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