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Journal ArticleDOI

Basic magnetic properties of rocks under the effects of mechanical stresses

Takesi Nagata
- 01 Mar 1970 - 
- Vol. 9, pp 167-195
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TLDR
In this article, the effects of mechanical stresses on the magnetization of the earth's crust can be classified in two categories: (a) the reversible effect which disappears when the stress is removed; and (b) the irreversible effect which causes an irreversible enhancement or an irreversible demagnetization of remanent magnetization.
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This article is published in Tectonophysics.The article was published on 1970-03-01. It has received 103 citations till now. The article focuses on the topics: Remanence & Magnetization.

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Citations
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Journal ArticleDOI

Piezomagnetic fields associated with a dislocation source in a layered elastic medium

TL;DR: In this article, a semi-analytical procedure for calculating the piezomagnetic field arising from a point dislocation source embedded in a layered elastic medium is derived, where all of the governing equations written in a real domain, together with the linear constitutive law of the PDE, are converted to a set of ordinary differential equations in a wavenumber domain.
Journal ArticleDOI

The hysteresis of piezomagnetization.

TL;DR: In the case of the second cycle of the same compression in the same magnetic field H, the magnetization is subjected to a hysteresis phenomenon, called the hystresis of piezomagnetization.
Journal ArticleDOI

Effect of cyclic loading at elevated temperatures on the magnetic susceptibility of a magnetite-bearing ore

TL;DR: In this article, the effect of cyclic-mechanical loading on the magnetic susceptibility and its anisotropy of a magnetite-bearing ore with varying temperatures (400° and 500° C) and environment (air and vacuum) was investigated.
Journal ArticleDOI

Piezoremanent magnetization of the ensemble of single-domain particles

TL;DR: In this article, a theoretical analysis of the properties of different forms of piezoremanent magnetization within the entire range of stresses is carried out using the model of single-domain particles.
Journal Article

The hysteresis of piezomagnetization.

TL;DR: In the case of the second cycle of the same compression in the same magnetic field H, the magnetization is subjected to a hysteresis phenomenon, called the hystresis of piezomagnetization.
References
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Journal ArticleDOI

The seismomagnetic effect

TL;DR: In this article, the authors calculate local variations in the geomagnetic field, which are produced by stress changes in crustal rocks, from the stress patterns and the piezomagnetic properties of the rocks down to the Curie point isotherm.
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Earthquake Energy, Earthquake Volume, Aftershock Area, and Strength of the Earth's Crust

TL;DR: In this article, the authors deduced the energy of the largest possible earthquake from the spatial distribution of the stress energy within the earth's crust, which was then combined with the magnitude energy relation due to GUTENBERG and RICHTER, yielding a formulaE=6×102×A1·5.
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Effects of Uniaxial Compression on Remanent Magnetization

TL;DR: In this article, the effect of directional stress on the remanent magnetization of magnetite bearing rocks and nickel polycrystallites was investigated and a nearly reversible change in intensity was found when the direction of compression is perpendicular to that of TRM.
Journal ArticleDOI

The effect of stress on the susceptibility and magnetization of a partially magnetized multidomain system

TL;DR: In this article, a model for partial magnetization of an isotropic multidomain magnetic system was proposed and the behavior of the model system in response to applied stress was analyzed.
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Theory of the magnetic susceptibility of stressed rock

TL;DR: In this paper, the authors calculated the stress dependence of magnetic susceptibility of igneous rock from the multidomain theory of magnetic grains, assuming that the magnetic mineral is pure magnetite whose saturation magnetization, magnetocrystalline anisotropy and saturation magnetostriction are known.
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