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A guided enquiry approach to introduce basic concepts concerning magnetic hysteresis to minimize student misconceptions
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
2014 (English)In: European journal of physics, ISSN 0143-0807, E-ISSN 1361-6404, Vol. 35, no 6, 065015- p.Article in journal (Refereed) Published
Abstract [en]

Basic concepts concerning magnetic hysteresis are of vital importance in understanding magnetic materials. However, these concepts are often misinterpreted by many students and even textbooks. We summarize the most common misconceptions and present a new approach to help clarify these misconceptions and enhance students' understanding of the hysteresis loop. In this approach, students are required to perform an experiment and plot the measured magnetization values and thereby calculated demagnetizing field, internal field, and magnetic induction as functions of the applied field point by point on the same graph. The concepts of the various coercivity, remanence, saturation magnetization, and saturation induction will not be introduced until this stage. By plotting this graph, students are able to interlink all the preceding concepts and intuitively visualize the underlying physical relations between them.

Place, publisher, year, edition, pages
2014. Vol. 35, no 6, 065015- p.
Keyword [en]
magnetic hysteresis, coercivity, guided enquiry, demagnetizing field
National Category
Physical Sciences Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-238417DOI: 10.1088/0143-0807/35/6/065015ISI: 000344180400019OAI: oai:DiVA.org:uu-238417DiVA: diva2:772954
Available from: 2014-12-17 Created: 2014-12-12 Last updated: 2017-12-05Bibliographically approved

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Wei, YajunGunnarsson, KlasSvedlindh, Peter

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