Contrasts in the Coercivities of SmCo5 and Sm2Co17-Type Permanent Magnets

Abstract

We have extracted the intrinsic coercivity, saturation magnetization, and anisotropy field from M-H loop measurements in the TDK Sm2(Co, Fe, Cu, Zr)17 and the Hitatchi SmCo5 permanent magnetic materials from liquid helium to room temperature. The TDK sample exhibits a coercivity in the hard direction which is larger than in the easy direction, while the reverse situation is true for the SmCo5 sample. This behavior is linked to the different in the mechanisms of magnetization dominating the sample, wall domain motion for the TDK sample, and domain nucleation for the SmCo5.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1982
Accession Number
ADA126755

Entities

People

  • A. Tauber
  • F. Rothwart
  • H. A. Leupold
  • J. J. Winter
  • J. T. Breslin

Organizations

  • United States Army Communications-Electronics Command

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Anisotropy
  • Cellular Structures
  • Coercivity
  • Determinants (Mathematics)
  • Domain Walls
  • Ferromagnetic Domains
  • Magnetic Materials
  • Magnetic Properties
  • Magnetization
  • Magnets
  • Materials
  • Measurement
  • Millimeter Waves
  • New York
  • Permanent Magnets
  • Saturation

Fields of Study

  • Physics

Readers

  • Mathematics or Statistics
  • Superconducting Magnet Technology