NEUTRON-SCATTERING STUDY OF SR SUBSTITUTION FOR BA IN YBA2CU3O7-Y

Authors
DING YF LI JH YANG JL ZHANG BL KANG J YE CT FU Q JIN S CUI YJ HE AS HE YS
Citation
Yf. Ding et al., NEUTRON-SCATTERING STUDY OF SR SUBSTITUTION FOR BA IN YBA2CU3O7-Y, Chinese Physics Letters, 10(8), 1993, pp. 486-488
Citations number
9
Categorie Soggetti
Physics
Journal title
Chinese Physics Letters → ACNP
ISSN journal
0256307X
Volume
10
Issue
8
Year of publication
1993
Pages
486 - 488
Database
ISI
SICI code
0256-307X(1993)10:8<486:NSOSSF>2.0.ZU;2-1
Abstract
Neutron diffraction and inelastic scattering were carried out on YBa2- xSrxCu3O7-y (x = 0.5. 1.0, 1.25). It was confirmed that the substituti on of Sr for Ba in YBa2Cu3O7-y increases the oxygen vacancies in the C u-O chain. Moreover, the substitution strengthens the coupling between the Ba-O plane and the Cu-O chain, and reduces the crystal stability. These are the possible causes of T(c) depression for Sr substituted Y Ba2Cu3O7-y.