TY - JOUR
T1 - Raman measurements of Y1-xEuxBa2Cu3O7
T2 - Comparison with Y1-xPrxBa2Cu3O7
AU - Yang, In Sang
AU - Burns, G.
AU - Dacol, F. H.
AU - Bringley, J. F.
AU - Trail, S. S.
PY - 1990/10/15
Y1 - 1990/10/15
N2 - We present polarized Raman measurements of small single crystals embedded in Y1-xEuxBa2Cu3O7 polycrystalline pellets. Superconductivity remains unsuppressed through the entire range of x. With increasing x, the frequency increase of the Ba-Ba vibrational mode and the apical oxygen Oz-Oz vibrational mode, is significantly smaller than in Y1-xPrxBa2 Cu3O7, even though similar changes in interatomic distances occur in both systems. These results support the assertion that the frequency changes of Ba-Ba and Oz-Oz modes are due to changes in electronic states and not due to interatomic distances.
AB - We present polarized Raman measurements of small single crystals embedded in Y1-xEuxBa2Cu3O7 polycrystalline pellets. Superconductivity remains unsuppressed through the entire range of x. With increasing x, the frequency increase of the Ba-Ba vibrational mode and the apical oxygen Oz-Oz vibrational mode, is significantly smaller than in Y1-xPrxBa2 Cu3O7, even though similar changes in interatomic distances occur in both systems. These results support the assertion that the frequency changes of Ba-Ba and Oz-Oz modes are due to changes in electronic states and not due to interatomic distances.
UR - http://www.scopus.com/inward/record.url?scp=0025505441&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(90)90452-K
DO - 10.1016/0921-4534(90)90452-K
M3 - Article
AN - SCOPUS:0025505441
SN - 0921-4534
VL - 171
SP - 31
EP - 36
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 1-2
ER -