Abstract
Synthetic single crystals of titanomagnetite (Fe2.4T0.6O4) were progressively oxidized at 1, 275°C, under controlled CO/CO2 atmospheres to simulate the “deuteric oxidation” process which occurs in nature. For moderate degrees of oxidation the resultant phase assemblage comprised two titanomagnetite phases intergrown with hemoilmenite lamellae. During the acquisition of weak-field thermoremanent magnetization (TRM) by the oxidized multiphase samples, the direction of magnetization was found in some cases to be opposite to that of the applied magnetic field. This self-reversal is thought to be due to a negative magnetostatic interaction between the two titanomagnetites. The interaction field was estimated as being of the order of a few hundred Amps per metre and is thought to be magnetostatic in origin. The region of self-reversal was confined to a narrow oxidation range although partial self-reversal was observed over a much wider range.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
