Figure 4
(a) Enlarged rietveld refined XRD patterns of 2θ between 41∼44.2° for [(Pr, Nd)1−x(La, Ce)x]2.14Fe14B powders. (b) Dependences of lattice parameters a, c, c/a ratio and unit cell volume V of the 2:14:1 tetragonal phase on the La-Ce content x.
