Reversible thermal hysteresis in heating-cooling cycles of magnetic susceptibility
Published: 17 January 2023| Version 2 | DOI: 10.17632/zx7y6g9rdv.2
Contributors:
Qi Zhang, Description
Thermomagnetic curves of magnetic susceptibility are key to characterizing magnetic properties. The ~300-400°C decreasing trend is usually attributed to the inversion of maghemite to hematite. We present thermomagnetic curves of magnetic susceptibility, together with first-order reversal curves of natural basalt and red soil samples. Our results offer a new explanation of a marked drop in thermomagnetic curves at ~300-400°C, that single-domain magnetite undergoing the SSD to SP transition should be considered. For plotting thermomagnetic curves and generating first-order reversal diagrams, all data is available on the data sites.
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Institutions
Southern University of Science and Technology Department of Ocean Science and Engineering, Eberhard Karls Universitat Tubingen
Categories
Magnetism, Magnetite