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Design of Nanocrystalline Magnetic Materials and Their Applications as Soft Magnets and Magnetic Refrigerants

Published

Author(s)

Freemon Johnson, Robert D. Shull

Abstract

This review is divided into two main parts, with the common theme of nanocrystalline metallic magnetic alloys. The first part will introduce soft magnetic materials and describe how nanocrystalline magnetic materials perform in this capacity. The discussion will include ways of improving the performance of a special nanocrystalline soft magnet designed to operate at high temperatures. The second part will introduce the concept of a magnetocaloric effect and how it can be used to produce a magnetic refrigerator. Recent materials advances have opened the possibility that magnetic refrigerators can be made to operate usefully at temperatures well above 0 K, perhaps even near room temperature. Nanocrystalline magnetic materials, engineered to display superparamagnetic behavior, are one of two classes of materials that can display such an enhanced magnetocaloric effect.
Citation
Journal of Intelligence Community Research and Development (JICRD)

Citation

Johnson, F. and Shull, R. (2021), Design of Nanocrystalline Magnetic Materials and Their Applications as Soft Magnets and Magnetic Refrigerants, Journal of Intelligence Community Research and Development (JICRD) (Accessed May 23, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 12, 2021