Hydrothermal synthesis and {sup 121}Sb Moessbauer characterization of perovskite-type oxides: Ba{sub 2}SbLnO{sub 6} (Ln = Pr, Nd, Sm, Eu)

Journal Article · Sat May 15 00:00:00 EDT 2010 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2010.02.012· OSTI ID:22066212

Liyan, Wu; Jianmin, Ma ^[1]; Hongbo, Huang ^[2]; Ruifang, Tian ^[1]; Yuanfu, Hsia ^[2]

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1. Department of Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071 (China)
2. Department of Physics, Nanjing University, Nanjing 210093 (China)

A mild hydrothermal process to prepare Ba{sub 2}SbLnO{sub 6} (Ln = Pr, Nd, Sm, Eu) perovskite-type oxides are presented. These perovskites were characterized on the basis of X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), inductively-coupled plasma spectra (ICP) techniques. Primary structure was confirmed using Rietveld method based on XRD data shows that the likely space groups of Ba{sub 2}SbLnO{sub 6} are R-3 for Ln = Pr and Nd and F{sub m}-3{sub m} for Ln = Sm and Eu, respectively. The measurement of Moessbauer effect of the 37.2 keV {gamma} transition of {sup 121}Sb indicates that the isomer shift of these perovskites falls in the region of the Sb{sup 5+} and reflects some hybridized-orbital behavior in Sb-O bonds.

• OSTI ID: 22066212
• Journal Information: Materials Characterization, Vol. 61, Issue 5; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
ANTIMONY 121
BARIUM COMPOUNDS
CHEMICAL BONDS
EUROPIUM OXIDES
ISOMER SHIFT
MOESSBAUER EFFECT
NEODYMIUM OXIDES
PEROVSKITE
PRASEODYMIUM OXIDES
SAMARIUM OXIDES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY