The physics of the self-reversal phenomenon is examined. Data published by the authors on the self-reversal of thermoremanent magnetization (TRM) in natural hemoilmenites and titanomagnetites are analyzed in relation to the most probable physical mechanisms of this phenomenon. The TRM self-reversal is experimentally studied on titanomagnetite-bearing dredged basalt samples from the Romanche fault and Spiess Ridge (Atlantic Ocean). The TRM self-reversal is shown to take place at a certain stage of the single-phase titanomagnetite oxidation (TC 300C). The authors arrive at the conclusion that the most probable mechanism of TRM self-reversal in natural hemoilmenites and titanomagnetites is the Neel mechanism, based on the temperature dependence of the N-type spontaneous magnetization.
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