Magnetic susceptibility is defined as the degree of magnetization of material when placed in a magnetic field. mol −1 (CGS) and is defined as \[{\displaystyle \chi _{\text{mol}}=M\chi _{v}/\rho }\] as: M = .H. 200. Magnetic Susceptibility. 3. THEORY: For diamagnetic materials, let us imagine that an atom that is a nucleus in a stationary cloud of electrons is placed in a magnetic field, as in Fig. (2) The magnetization can be defined as E M B ∂ =− ∂, (3) where E is the total energy of the system. In other words, it is the magnetic field which material itself produces. The force is measured with the magnetic field turned ON and with the field OFF at a given temperature (e.g., room temperature). Curie law of the magnetic susceptibility 0 100. The magnetic susceptibility factor χ arises from the magnetization M induced in a material exposed to an external magnetic field H 0, corresponding to a magnetic induction B 0 =μ 0 H 0, in the absence of the material, where μ 0 =4π×10 −7 (T m A −1) is the magnetic permeability in vacuum. 40 45 50. Where Φ is the magnetic flux and A is the area of cross section. 15. 1a. the magnetic susceptibility, spatial distribution and concentration of the local crustal materials. Fortunately only a few minerals occur abundantly enough in nature to make a significant contribution to the induced and remanent fields. Magnetic materials 1) Magnetic Induction or Magnetic Flux density (B): The magnetic induction or magnetic flux density is the number of lines of magnetic force passing through unit area perpendicularly. magnetic susceptibility of a number of materials by using a sample, a magnetic field, and a mass balance, and compare the values to the known material susceptibilities. Magnetization (M) and Magnetic field (H) are related by a term known as Magnetic Susceptibility (.) 35. 300 400 500. w.wang 46 Magnetic susceptibility and permeability In large class of materials, there exists a linear relation between M (internal magnetization) and H (external applied magnetic field)M = χH χ is positive then the material is called paramagnetic χis negative then the material is diamagnetic A linear relationship also occurs between B (magnetic flux density) magnetic field gradient, which is not very practical! Measure- Magnetic Field: The magnetic field is an imaginary line of force around a magnet which enables other ferromagnetic materials to get repelled or attracted towar… O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários. 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