Landolt-Börnstein - Group III Condensed Matter

7.5.2.5.7 Magnetostriction

Abstract

This chapter discusses magnetostriction of the carbides R2Fe17Cx. The carbides R2Fe17Cx, like the parent compounds R2Fe17, undergo large positive spontaneous magnetostrictive deformations below T C. Temperature dependence of the lattice parameters a, c, and of the unit cell volume V for Tb2Fe17Cx, Tm2Fe17Cx and Y2Fe17Cxare shown. The basal-plane linear deformation λ a at 5 K increases with increasing C content for R = Y and Tb, whereas the uniaxial deformation λ c remains practically the same. Linear thermal expansion coefficients in the paramagnetic range in the basal plane, α a , and along the c axis, α c , volume thermal expansion coefficient α V in the paramagnetic range, spontaneous linear deformations in the basal plane, λ a , and along c axis, λ c , and spontaneous volume deformation ωs for R2Fe17Cxcompounds are tabulated. The temperature dependence of ωs follows the square of the magnetic moment of the Fe sublatice.

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Title
7.5.2.5.7 Magnetostriction
Book Title
Magnetic Alloys for Technical Applications. Hard Magnetic Alloys
In
7.2.5.2 R{2}Fe{17}A{x} compounds with A = C, N, B or D (H)
Book DOI
10.1007/b41058
Chapter DOI
10.1007/10028076_65
Part of
Landolt-Börnstein - Group III Condensed Matter
Volume
19I2
Editors
  • H. P. J. Wijn
  • Authors
  • E. Burzo
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