Landolt-Börnstein - Group III Condensed Matter General introduction


This chapter provides a general introduction to a discussion on bcc-type magnet alloys with spinodal decomposition. The spinodal decomposition occurs as a phase transformation of decomposition from a single phase at high temperature to two low-temperature phases with the same crystal structure but with different composition and lattice parameters. The transformation starts as a slight variation of composition everywhere throughout the crystal and it develops some modulation structure with a spatial periodicity and finally results in a perfect two-phase separation. If the Curie temperature of the alloy is not much lower than the spinodal decomposition temperature, magnetic energy promotes the anisotropic development of a periodic structure so that fine-dispersed elongated ferromagnetic particles are obtained in an alloy system, which is favorable for the production of permanent magnets.

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Title General introduction
Book Title
Magnetic Alloys for Technical Applications. Hard Magnetic Alloys
In bcc-type magnet alloys with spinodal decomposition
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Landolt-Börnstein - Group III Condensed Matter
  • H. P. J. Wijn
  • Authors
  • T. Nakamichi
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