Landolt-Börnstein - Group III Condensed Matter

7.2.4.3 Magnetization and Curie temperature

Abstract

This chapter discusses magnetization and Curie temperature of rare-earth compounds. The saturation magnetizations of the light rare-earth compounds are higher than those of the heavy rare-earth ones. This is the result of the antiparallel coupling between the rare-earth spin moments and the Fe moments leading to the ferromagnetic behavior of the former and the ferrimagnetism in the heavy rare-earth compounds. Magnetizations, Curie temperatures TC and spin reorientation temperatures Tsr in R2Fe14C-based compounds, spin reorientation temperatures Tsr for R2Fe14C-based hydrides, and magnetizations, Curie temperatures TC and spin reorientation temperatures Tsr of R2Fe14C-based mixed carbides and borides are tabulated. This chapter also contains some graphical representations as follows: (i) thermal variation of the resultant magnetization ps and the calculated sublattice magnetizations, pFe and pR, in R2Fe14C (R = Dy, Er) compounds, (ii) temperature dependence of the saturation magnetization measured on powdered R2Fe14B0.5C0.5 samples with R = Nd or Y, (iii) composition dependence of the saturation magnetization for Nd2(Fe1-xCox)14B0.5C0.5 at 1.5 and 300K, (iv) effect of substitution on the magnetic ordering temperatures in Nd2Fe14C and Nd14Fe78C8 based compounds, (v) composition dependence of the saturation magnetization in Nd14Fe78-xMxC8 alloys, (vi) composition dependence of the Curie temperatures in R2Fe14-xMnxC compounds with R = Ce, Pr, Gd, Ho and Er, (vii) temperature dependence of the magnetization in two Pr2Fe14-xMnxC compounds, measured in a magnetic field μ0H = 1.25 T, (viii) thermal variations of the real part of the complex susceptibilities for R2Fe14C compounds and their hydrides with R = Tm, Er and Sm.

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Title
7.2.4.3 Magnetization and Curie temperature
Book Title
Magnetic Alloys for Technical Applications. Hard Magnetic Alloys
In
7.2.4 R{2}Fe{14}C-type magnet alloys
Book DOI
10.1007/b41058
Chapter DOI
10.1007/10028076_48
Part of
Landolt-Börnstein - Group III Condensed Matter
Volume
19I2
Editors
  • H. P. J. Wijn
  • Authors
  • E. Burzo
  • H. R. Kirchmayr
  • Cite this content

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