Magnetic nanocomposite materials for high temperature applications

Frank Johnson, Amy Hsaio, Colin Ashe, David Laughlin, David Lambeth, Michael E. McHenry, L. Varga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Magnetic nanocomposites comprised of nano-sized magnetic crystals embedded in an amorphous matrix have been shown to have excellent soft magnetic properties. In particular, amorphous and nanocrystalline materials have been investigated for various soft magnetic applications including transformers and inductive devices. The historical development of nanocomposite soft magnetic materials will be reviewed. In these materials it has been determined that an important averaging of the magnetocrystalline anisotropy over many grains coupled within an exchange length is at the root of the magnetic softness of these materials. The crystallization kinetics and the chemical partitioning occurring during crystallization will be described. In particular, the role of the amorphous phase in exchange coupling magnetic nanoparticles at elevated temperatures will be discussed. In HITPERM nanocomposites, developed by our group, [1] nanocrystalline α and α'(B2)-FeCo are formed with significantly improved high temperature magnetic properties than in it's predecessors, NANOPERM and FINEMET. HITPERM has been developed for applications with high permeability requirements and with needs for large inductions at high temperatures. Recent work in characterizing the performance of HITPERM magnetic nanocomposite systems will be described. Specifically we have developed soft magnetic alloys that exhibit high magnetic induction at temperatures above current operating ranges for commercial devices. The applications for this material in high frequency (up to 1 MHz) inductive devices for high temperature power electronics will be reviewed.

Original languageEnglish
Title of host publicationProceedings of the IEEE Conference on Nanotechnology
PublisherIEEE Computer Society
Pages1-6
Number of pages6
Volume2001-January
ISBN (Print)0780372158
DOIs
Publication statusPublished - 2001
Event1st IEEE Conference on Nanotechnology, IEEE-NANO 2001 - Maui, United States
Duration: Oct 28 2001Oct 30 2001

Other

Other1st IEEE Conference on Nanotechnology, IEEE-NANO 2001
CountryUnited States
CityMaui
Period10/28/0110/30/01

Fingerprint

High temperature applications
Magnetic materials
Nanocomposites
nanocomposites
crystallization
magnetic properties
Magnetic properties
Temperature
softness
magnetic induction
amorphous materials
Soft magnetic materials
Magnetocrystalline anisotropy
Nanocrystalline materials
magnetic materials
Exchange coupling
transformers
Crystallization kinetics
Electromagnetic induction
induction

ASJC Scopus subject areas

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Johnson, F., Hsaio, A., Ashe, C., Laughlin, D., Lambeth, D., McHenry, M. E., & Varga, L. (2001). Magnetic nanocomposite materials for high temperature applications. In Proceedings of the IEEE Conference on Nanotechnology (Vol. 2001-January, pp. 1-6). [966382] IEEE Computer Society. https://doi.org/10.1109/NANO.2001.966382

Magnetic nanocomposite materials for high temperature applications. / Johnson, Frank; Hsaio, Amy; Ashe, Colin; Laughlin, David; Lambeth, David; McHenry, Michael E.; Varga, L.

Proceedings of the IEEE Conference on Nanotechnology. Vol. 2001-January IEEE Computer Society, 2001. p. 1-6 966382.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Johnson, F, Hsaio, A, Ashe, C, Laughlin, D, Lambeth, D, McHenry, ME & Varga, L 2001, Magnetic nanocomposite materials for high temperature applications. in Proceedings of the IEEE Conference on Nanotechnology. vol. 2001-January, 966382, IEEE Computer Society, pp. 1-6, 1st IEEE Conference on Nanotechnology, IEEE-NANO 2001, Maui, United States, 10/28/01. https://doi.org/10.1109/NANO.2001.966382
Johnson F, Hsaio A, Ashe C, Laughlin D, Lambeth D, McHenry ME et al. Magnetic nanocomposite materials for high temperature applications. In Proceedings of the IEEE Conference on Nanotechnology. Vol. 2001-January. IEEE Computer Society. 2001. p. 1-6. 966382 https://doi.org/10.1109/NANO.2001.966382
Johnson, Frank ; Hsaio, Amy ; Ashe, Colin ; Laughlin, David ; Lambeth, David ; McHenry, Michael E. ; Varga, L. / Magnetic nanocomposite materials for high temperature applications. Proceedings of the IEEE Conference on Nanotechnology. Vol. 2001-January IEEE Computer Society, 2001. pp. 1-6
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