The magnetovolume and magnetic properties of RCo₄B (R - Y, Ce, Gd) compounds under pressure up to 12kbar have been studied. We determined the volume dependencies of Curie temperatures, magnetization, spin reorientation transitions (for YCo₄B), first-order magnetization process (for monocrystalline GdCo₄B) and also the pressure induced changes of the volume anomaly connected with the isostructural phase transition of CeCo₄B. The results have been used to analyze the influence of rare-earth atoms on the volume dependencies of exchange interactions and magnetic anisotropy of RCo₄B compounds. © 2003 Elsevier Science B.V. All rights reserved.

Arnold Z., Kamarad J., Skorokhod Y., Hong N.M., Thuy N.P., Thang C.V.

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Từ khóa : Cobalt; Magnetic anisotropy; Magnetization; Phase transitions; Rare earth elements; Spin reorientation transitions; Yttrium compounds