Magnetism of Cr in V/Cr multilayers studied by Sn-119 Mossbauer spectroscopy

The magnetic properties of thin Cr layers in epitaxial V/Cr multilayered st ructures were investigated at room temperature and 15 K via Sn-119 Mossbaue r spectroscopy. The magnetic moment and the Neel temperature of Cr, as infe rred from the magnetic hyperfine fields transferred to the Sn-119 monatomic layers inserted in Cr layers, were found to reduce on decreasing the Cr la yer thickness below 40 Angstrom. The local magnetic structure along the gro wth direction of 80 Angstrom thick Cr layers was investigated by changing t he Sn probe positions. The effect of the V/Cr interface on the Cr magnetism is discussed.