A magnetic equation of state

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

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


In general, the intensity of magnetization, M, is dependent on both magnetic field, H, and on time and may be described in terms of a constitutive equation, or equation of state as dH = (1/χ)dM + Λd In M, where 1/χ = π{variant}H/π{variant}M{norm of matrix} and Λ = π{variant}H/π{variant} In Ṁ{norm of matrix}M. Measurements have been made on Pr15Fe77B8 from which values of Λ and χ as functions of M are derived using the constitutive equation. It is shown that χ is a function of M but is independent of Ṁ. At room temperature Λ = (86.0±1.4) Oe over the magnetization range + 300 to -500 G.

Original languageEnglish (US)
Pages (from-to)368-370
Number of pages3
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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