Magnetization surfaces in (M, H, Ṁ) space

R. Street, P. G. McCormick, L. Folks, R. Newman

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Thermal activation of magnetization processes leads to time dependence of intensity of magnetization, M. The description of the equation of state of a magnetized material thus requires the specification of the time rate of change of magnetization, Ṁ, in addition to M and the magnetic field, H. The magnetic state can be derived from a constitutive equation, the solutions of which are represented by surfaces in three-dimensional (M, H, Ṁ) space. Magnetization behaviour, subject to such conditions as constant H, constant Ḣ and constant Ṁ, is given by trajectories on the (M, H, Ṁ) surfaces. A computer generated (M, H, Ṁ) surface derived from experimental data on sintered Pr15Fe77B8 has been calculated. The variations of M vs. H under conditions of constant Ṁ and of constant Ḣ are derived from trajectories on this surface and they are compared with direct experimental data.

Original languageEnglish (US)
Pages (from-to)371-372
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Issue numberPART 1
StatePublished - Feb 2 1992
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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