TEMPERATURE-DEPENDENCE OF THE MCXD AT THE GD L(III) EDGE

We measured the temperature dependence of the Magnetic Circular X-ray Dichroism (MCXD) effect at the Gd L(III) absorption edge from 77 K up to 350 K, using an energy dispersive spectrometer. The low temperature , ferromagnetic region, MCXD spectrum consists of the main positive pe ak with pre-edge and post-edge features. Only the main positive peak e xhibits temperature dependence similar to magnetization. All of the ot her features decrease with increasing temperature and vanish slightly above the reorientation temperature. Well above the ordering temperatu re, the MCXD consists only of the positive peak with a post-edge backg round slowly decaying away from it over the range of 90 eV.