By J.J.M. Franse, R. Gersdorf (auth.), H.P.J. Wijn (eds.)
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Extra info for 3d, 4d and 5d Elements, Alloys and Compounds
For data points without error bars the uncertainties are equal to or smaller than the size of the points. Note that the inelastic points lie slightI) lower than the elastic form factors in the [ IOO] and [I IO] directions and slightly above in the [I II] direction [8l S I]. Stearns Ref. p. 7 Fe, Co, Ni: Form factors, magnetic moment distribution Fig. 2. Magnetic moment density distribution obtained from the Fourier inversion of the data of Fig. la over (a) the (100) face and (b) the (110) diagonal plane of the Fe unit cell.
G;+ c&; and P = ct2c12u2 1 2 3r where cli, clj, elkare the direction cosines of the angle between the magnetization vector and the crystallographic axes. For hexagonal lattices, such as Co, it is more convenient to use the definition where 4 is the angle between the magnetization and the c axis, and 0 is the angle in the basal plane. The measurementsare usually made on single-crystal spheresin a field large enough to remove the domain walls (called technical saturation). It is usually assumed that all the work done in changing the direction of magnetization is used to overcome the crystal anisotropy.
P. 134 anisotropy Table 3. Seecaption to Table 1 for details on magnetization measurements. T K K2 K3 6 Ref. 66(8) 82T4 82T4 68Fl 76A2 ‘) The higher order anisotropy constants were shown to be strongly dependent on the truncation in the procedure. It is concluded that it is never possible to describe the anisotropy of Ni with only K I and K,. *I &,,I in (110) plane. analysis Table 4. Two different methods for analyzing the torque curves were used, leading to different values. 2 57 - 23 26 90 80 83 90 410 390 410 530 0 - 10 - 11 -164 -160 -310 -350 -340 -230 Table 5.
3d, 4d and 5d Elements, Alloys and Compounds by J.J.M. Franse, R. Gersdorf (auth.), H.P.J. Wijn (eds.)