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Pressure induced changes of magnetic phase transitions in RCo4B compounds

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