SYNTHESIS AND NEUTRON POWDER DIFFRACTION STUDY OF ND2-XBA2+XCU2TI2O11FOR X = 0.0 AND 0.3

Authors
MARKVARDSEN A JORGENSEN JE WANNBERG A DELAPLANE RG
Citation
A. Markvardsen et al., SYNTHESIS AND NEUTRON POWDER DIFFRACTION STUDY OF ND2-XBA2+XCU2TI2O11FOR X = 0.0 AND 0.3, Physica. C, Superconductivity, 300(1-2), 1998, pp. 110-114
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
300
Issue
1-2
Year of publication
1998
Pages
110 - 114
Database
ISI
SICI code
0921-4534(1998)300:1-2<110:SANPDS>2.0.ZU;2-6
Abstract
The quadruple perovskites Nd2-xBa2+xCu2Ti2O11 have been prepared for v alues of x in the range 0.0 to 0.6. Samples with x = 0.0 and 0.3 were studied by neutron powder diffraction. Cu/Ti and Nd/Ba cation mixing w as found to be present in both compounds and the excess Ba in the x = 0.3 sample is located in the Nd Id (1/2 1/2 1/2) site while the Nd Ic (1/2 1/2 0) site between the CuO2 layers is fully occupied by Nd ions. No increase in bond valency sum for Cu in the CuO2 layers was observe d in the x = 0.3 sample. (C) 1998 Elsevier Science B.V.