EXAFS STUDIES OF TB AND ITS COMPOUNDS

The L-absorption spectra of rare earth metal Tb and its compounds are recorded by using a Laboratory XAFS system. The L(2)- and L(3)-absorpt ion edges are located by using an analytical approach based on Fourier transformation of EXAFS data, chemical shifts thus obtained are used for estimating effective charge. This approach gives more accurate res ults as it eliminates the uncertainty in the location of absorption ed ges.