R. Lubbers et al., TEMPERATURE AND PRESSURE-INDUCED VALENCE TRANSITIONS IN YBCU5-XGAX STUDIED BY YB-L-III XANES, Journal de physique. IV, 7(C2), 1997, pp. 1021-1022
Employing the Yb-L-III XANES, YbCu5, YbCu4Ga, YbCu3Ga2 and YbCu3.5Ga1.
5 were studied in the temperature range 25 K to 300 K. YbCu5 and YbCu4
Ga were studied at 300 K at pressures up to 175 kbar.