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Advances in Magnetic Materials: Fabrication, Properties, and Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (20 November 2023) | Viewed by 1351

Special Issue Editor


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Guest Editor
Dept. of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL, USA
Interests: thin films; magnetic materials and devices; spintronics

Special Issue Information

Dear Colleagues,

Magnetic materials have been intensively studied for several decades, particularly as applied to data storage. Since the advent of spintronics late last century, the applications have been extended to non-volatile memory. This Special Issue will address recent applications of magnetic materials to data storage and advanced memory. It will comprise select contributed papers on the fabrication, properties and applications of magnetic materials.

Potential topics include, but are not limited to: perpendicular magnetic anisotropy thin films; fabrication of magnetic tunnel junctions; characterization of the magnetic and structural properties of magnetic tunnel junctions; bit-patterned media for hard disk drives; block copolymer templating of high-coercivity perpendicular thin films; rare-earth-free high-magnetic-strength thin films.

Prof. Dr. Subhadra Gupta
Guest Editor

Manuscript Submission Information

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Keywords

  • magnetic tunnel junctions
  • perpendicular anisotropy thin films
  • bit-patterned media
  • block copolymer templating

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Published Papers (1 paper)

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Research

10 pages, 4087 KiB  
Article
Magnetic Properties of the Soft Magnetic Composites Prepared Using Mixtures of Carbonyl Iron, FeSiCr, and FeSiAl Alloy Powders
by Hsing-I Hsiang and Liang-Fang Fan
Materials 2023, 16(17), 6033; https://doi.org/10.3390/ma16176033 - 2 Sep 2023
Cited by 2 | Viewed by 1058
Abstract
The effect of carbonyl iron powder, FeSiCr alloy powder, and annealed FeSiAl alloy powder, both individually and in binary combinations, on the density, microstructure, and magnetic properties (including permeability and power loss) of inductors manufactured by molding compaction was investigated in this study. [...] Read more.
The effect of carbonyl iron powder, FeSiCr alloy powder, and annealed FeSiAl alloy powder, both individually and in binary combinations, on the density, microstructure, and magnetic properties (including permeability and power loss) of inductors manufactured by molding compaction was investigated in this study. The investigation demonstrates that hysteresis loss dominates power loss in the tested frequency range. Due to higher compacted density and reduced coercivity, adding 50% carbonyl iron powder to annealed powder resulted in the lowest hysteresis loss, allowing for domain wall movement. On the other hand, adding 50% FeSiCr alloy powder to annealed powder resulted in higher hysteresis loss due to impurity components hindering domain wall motion. Due to extreme plastic deformation, the carbonyl iron powder and FeSiCr alloy powder combinations displayed the most significant hysteresis loss. Eddy current loss followed the same trends as hysteresis loss in the mixtures. This study provides important insights for refining the soft magnetic composite design to obtain higher magnetic performance, while minimizing power loss. Full article
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