Definition of a magnetic susceptibility of conglomerates with magnetite particles. Particularities of defining single particle susceptibility

Sandulyak, A. A.; Sandulyak, A. V.; Ershova, V.; Pamme, N.; Ngmasom, B.; Iles, A.

Abstract

Data of a magnetic susceptibility of ferro-and the ferrimagnetic particles of many technogenic, natural, special media are especially demanded for the solution of various tasks connected with purposeful magnetic impact on these particles. One of productive approaches to definition of a magnetic susceptibility χ of these particles consists in receiving experimental data of a susceptibility of disperse samples 〈χ〉 with a disperse phase of these particles. The paper expounds and analyses the results of experiments on defining (by Faraday method in a magnetic field with intensity H=90–730kA/m) the magnetic susceptibility 〈χ〉 of disperse samples (conglomerates) with a given volume ratio γ of magnetite particles (γ=0.0065–0.25). The corresponding families of concentration and field dependences are provided alongside with discussing the applicability of linear and exponential functions to describe these dependences. We consider the possibility of defining single particles susceptibility χ (with simultaneous obtaining field dependence of this susceptibility) by the commonly used relation χ=〈χ〉/γ both at relatively small (preferable for accuracy reasons) values γ – to γ=0.02…0.025, as well as at increased values γ – up to γ=0.25. The data χ are provided depending on H and correlating with known data at H

Citation

Sandulyak, A. A., Sandulyak, A. V., Ershova, V., Pamme, N., Ngmasom, B., & Iles, A. (2017). Definition of a magnetic susceptibility of conglomerates with magnetite particles. Particularities of defining single particle susceptibility. Journal of Magnetism and Magnetic Materials, 441, 724-734. https://doi.org/10.1016/j.jmmm.2017.06.027

• Journal Article Type: Article
• Acceptance Date: Jun 4, 2017
• Online Publication Date: Jun 10, 2017
• Publication Date: Nov 1, 2017
• Deposit Date: Apr 26, 2018
• Journal: Journal of Magnetism and Magnetic Materials
• Print ISSN: 0304-8853
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 441
• Pages: 724-734
• DOI: https://doi.org/10.1016/j.jmmm.2017.06.027
• Keywords: Disperse sample; Particle; Particle matter; Particles mutual disconnection; Volume ratio; Magnetic susceptibility; Field intensity
• Public URL: https://hull-repository.worktribe.com/output/485569
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0304885317303621?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: Definition of a magnetic susceptibility of conglomerates with magnetite particles. Particularities of defining single particle susceptibility; Journal Title: Journal of Magnetism and Magnetic Materials; CrossRef DOI link to publisher maintained version: http://dx.doi.org/10.1016/j.jmmm.2017.06.027; Content Type: article; Copyright: © 2017 Elsevier B.V. All rights reserved.