SPIN REORIENTATION TRANSITION IN SOME REFE10V2 INTERMETALLICS UNDER HYDROSTATIC-PRESSURE

The large effect of the applied hydrostatic pressure on the spin reorientation transition (SRT) temperature observed in Er2Fe14B has been associated with the modification of the intensity of the CEF interaction with pressure. We propose that mainly the second order CEF terms are sensitive to the pressure and also that the applied pressure influences only slightly the fourth and sixth order CEF terms and the intensity of the R-Fe exchange interaction. In the present article, we report a study of the thermal dependence of the ac magnetic susceptibility under hydrostatic pressure up to 10 kbar in intermetallic compounds of the series RFe10V2 (R = Nd, Dy, and Er). The results show no evidence of any change of the SRT temperature in the measured range of pressure, which constitutes a confirmation of the negligible influence that the external applied pressure has on high order CEF terms.