1 Introduction. A closely related property of materials is magnetic susceptibility, which is a dimensionless proportionality factor that indicates the degree of magnetization of a material in response to an applied magnetic field. Magnetic susceptibility measurements of soils are mostly used for two purposes: to read the climatic signal recorded by palaeosols (Maher & Thompson 1999; Maher et al. Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field.A related term is magnetizability, the proportion between magnetic moment and magnetic flux density. The LibreTexts libraries are Powered by MindTouch ® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. It is caused by interactions of electrons and nuclei with the externally applied magnetic field. The problems arising from the shape effects of magnetite are compounded by the grouping of grains to form elongate masses. Volume susceptibility. Magnetic susceptibility, k, is related to magnetic permeability (m) by: Magnetic susceptibility is the magnetic response of a substance to a magnetic field and can result in local magnetic field inhomogeneities and signal loss. Constructing a Magnetic Susceptibility Model from Kaho’olawe Soil Measurements The problems of magnetic soils at Kaho’olawe have been well documented [Cespedes, 2001]. The proportional constant links magnetization to the applied magnetic field intensity (at levels below which saturation and hysteresis are important). Magnetic Susceptibility and Permeability in linear media Problem 6.17 A current I flows down a long straight wire of radius a. Magnetic susceptibility anisotropy and mineralogy . Susceptibility (χ) is a measure of the extent a substance becomes magnetized when placed in an external magnetic field.Materials that disperse the main field are called diamagnetic.Materials that concentrate the field are called paramagnetic, superparamagnetic, or ferromagnetic, depending on the magnitude of the effect. 2003) and to identify pollution in soils (Petrovský & Ellwood 1999; Lecoanet et al. A model for the frequency dependent susceptibility of Kaho’olawe soils is required to investigate magnetic noise problems through forward modelling. Susceptibility is a measure of the response of the material to an applied magnetic field. If the wire is made of linear material with susceptibility m and the current is distributed uniformly, what is the magnetic field a distance s from the axis? These effects are proportional to field strength and the differences in susceptibility of two regions. Magnetic susceptibility is a measure of the ability of a material to be magnetized. 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