TY - JOUR
T1 - Raman studies on BaCuO2, Ba2CuO3 and Ba2Cu3O5.9
AU - Chang, H.
AU - Ren, Y. T.
AU - Sun, Y. Y.
AU - Wang, Y. Q.
AU - Xue, Y. Y.
AU - Chu, C. W.
N1 - Funding Information:
J.Y. Fan is appreciatedfo r preparingt hef igures.H C is grateful to the coauthorse, speciallyC .W. Chu for the hospitalityd uring his visiting at the Texas Center for Superconductivityo f the University of Houston. This work is supportedb y USAFOSR F49620-93-1-0310,N SF Grant No. DMR 91-22043a ndARPA Grant No. MDA 972-90-J-1001,t heTexas Center for Super-conductivitya t the University of Houston and the T.L.L. Temple Foundation.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1994/7/20
Y1 - 1994/7/20
N2 - The Raman spectra of several as-synthesized barium cuprates, BaCuO2, Ba2CuO3 and Ba2Cu3O5.9, and annealed Ba2Cu3 O5.9 were studied in this work. Characteristic Raman bands were found at 633, 563 and 592 cm-1, respectively. They were polarized. These three strong bands can be used to identify these cuprates. The 563 cm-1band of Ba2CuO3 could be assigned to the vibration of vibrational mode of the apical oxygen along the c-axis. The 633 cm-1 band of Ba2Cu3O5.9 could be assigned to the vibration of O(VI). Other Raman bands were not assigned due to the complicated structures. The Raman spectra of annealed Ba2Cu3O5.9 under different conditions indicated that the Ba2Cu3O5.9 decomposed to BaCuO2; this way initiated by a high temperature and completed over a long-period treatment.
AB - The Raman spectra of several as-synthesized barium cuprates, BaCuO2, Ba2CuO3 and Ba2Cu3O5.9, and annealed Ba2Cu3 O5.9 were studied in this work. Characteristic Raman bands were found at 633, 563 and 592 cm-1, respectively. They were polarized. These three strong bands can be used to identify these cuprates. The 563 cm-1band of Ba2CuO3 could be assigned to the vibration of vibrational mode of the apical oxygen along the c-axis. The 633 cm-1 band of Ba2Cu3O5.9 could be assigned to the vibration of O(VI). Other Raman bands were not assigned due to the complicated structures. The Raman spectra of annealed Ba2Cu3O5.9 under different conditions indicated that the Ba2Cu3O5.9 decomposed to BaCuO2; this way initiated by a high temperature and completed over a long-period treatment.
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U2 - 10.1016/0921-4534(94)90430-8
DO - 10.1016/0921-4534(94)90430-8
M3 - Article
AN - SCOPUS:0028467925
SN - 0921-4534
VL - 228
SP - 383
EP - 388
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - 3-4
ER -