Demagnetization Energy and Internal Stress in Magnetite From Temperature-Dependent Hysteresis Measurements

Article Geosciences, Multidisciplinary

Demagnetization Energy and Internal Stress in Magnetite From Temperature-Dependent Hysteresis Measurements

Annemarieke Beguin et al.

Summary: The study reveals that stress anisotropy vanishes with increasing temperature in magnetite, and a new measurement and evaluation method can effectively separate stress-induced anisotropy and demagnetization effects, providing a new approach to studying the reliability of remanent magnetization in rocks.

GEOPHYSICAL RESEARCH LETTERS (2021)

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Article Geochemistry & Geophysics

Magnetic hysteresis of magnetite at high temperature: grain size variation

David J. Dunlop

Summary: The study focuses on the variation of magnetic properties of magnetite with different grain sizes from room temperature to the Curie point, covering various magnetic behavior. Understanding the magnetic properties of magnetite can help in unraveling the mechanisms of signal acquisition and retention.

GEOPHYSICAL JOURNAL INTERNATIONAL (2021)

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Article Geosciences, Multidisciplinary

Shock Remanent Magnetization Intensity and Stability Distributions of Single-Domain Titanomagnetite-Bearing Basalt Sample Under the Pressure Range of 0.1-10 GPa

Masahiko Sato et al.

Summary: This study investigates the spatial distributions of SRM intensity and stability of single-domain titanomagnetite-bearing basalt under different pressures, identifying three distinctive aspects: constant intensity below 0.1 GPa, linear trend as intensity is proportional to pressure up to 1.1 GPa, and constant intensity and increasing stability above 1.9 GPa. The findings suggest that the SRM properties of crustal rocks containing single-domain titanomagnetite change according to pressure levels, ultimately affecting their distribution after impact.

GEOPHYSICAL RESEARCH LETTERS (2021)

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Article Geochemistry & Geophysics