Magnetic Meta-Materials for Electromagnetic Applications

Abstract

The most significant achievements of the project are 1) Development of R2Fe14B-based (nano)composite permanent magnets with maximum energy product (BH)m>50 MGOe, 2) Improvement of the magnetic properties of the existing Sm2Co17-type magnets with (BH)m close to their theoretical limit and with higher operating temperatures, up to 500 deg C, 3) Development of new (nano)composite permanent magnets based on a hard magnetic phase (e.g., 2:17, 1:5) and a soft magnetic phase (Fe-based), 4) Development of new hybrid permanent magnets based on two hard magnetic phases (combinations between 2:14:1, 2:17 and 1:5), 5) Development of soft magnetic (nano)composites for high temperature (Fe-Co/W) and high frequency (artificial ferrites) applications. The obtained results encompassed the fabrication of new materials with outstanding, enhanced characteristics, as well as the theoretical description and understanding of their magnetic properties. New effects have been also put in evidence and opened up new perspectives in the understanding of the magnetic coupling and hardening mechanism.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2006
Accession Number
ADA458377

Entities

People

  • George C. Hadjipanayis

Organizations

  • University of Delaware

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Composite Materials
  • Couplings
  • Determinants (Mathematics)
  • Government Procurement
  • Governments
  • High Temperature
  • Magnetic Materials
  • Magnetic Properties
  • Magnets
  • Materials
  • Materials Processing
  • Military Research
  • Permanent Magnets

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Nanofabrication and Microfabrication.
  • Systems Analysis and Design