TY - JOUR
T1 - Raman scattering of Pb-based high-Tc superconducting oxides
AU - Kakihana, Masato
AU - Osada, Minoru
AU - Nagai, Ichiro
AU - Noji, Takashi
AU - Kato, Masatsune
AU - Koike, Yoji
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999/9
Y1 - 1999/9
N2 - Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu2O8+δ (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+δ (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+δ (Pb1212) were studied and vibrational assignments in harmony with the layer stacking sequences found in these Pb-based high-Tc superconducting oxides were proposed. In particular, the assignment of the 480- and 580-cm-1. Raman bands to oxygen in the PbO and SrO layers, respectively, was unambiguously established. In the case of Pb3212 we found that the intensities of modes connected to the CuO2-plane variations decreased with increasing carrier concentration. This effect was attributed to the increased metallic screening in the CuO2 planes that can be expected in the hole-rich Ca-doped samples.
AB - Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu2O8+δ (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+δ (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+δ (Pb1212) were studied and vibrational assignments in harmony with the layer stacking sequences found in these Pb-based high-Tc superconducting oxides were proposed. In particular, the assignment of the 480- and 580-cm-1. Raman bands to oxygen in the PbO and SrO layers, respectively, was unambiguously established. In the case of Pb3212 we found that the intensities of modes connected to the CuO2-plane variations decreased with increasing carrier concentration. This effect was attributed to the increased metallic screening in the CuO2 planes that can be expected in the hole-rich Ca-doped samples.
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U2 - 10.2497/jjspm.46.999
DO - 10.2497/jjspm.46.999
M3 - Article
AN - SCOPUS:0033185534
VL - 46
SP - 999
EP - 1003
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 9
ER -