PREPARATION AND DIELECTRIC CHARACTERIZATIONS OF THE NOVEL PEROVSKITE-TYPE OXIDES (LN(1 2)NA(1/2))TIO3 (LN = DY, HO, ER, TM, YB, LU)/

Authors
SHAN YJ NAKAMURA T INAGUMA Y ITOH M
Citation
Yj. Shan et al., PREPARATION AND DIELECTRIC CHARACTERIZATIONS OF THE NOVEL PEROVSKITE-TYPE OXIDES (LN(1 2)NA(1/2))TIO3 (LN = DY, HO, ER, TM, YB, LU)/, Solid state ionics, 108(1-4), 1998, pp. 123-128
Citations number
8
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
108
Issue
1-4
Year of publication
1998
Pages
123 - 128
Database
ISI
SICI code
0167-2738(1998)108:1-4<123:PADCOT>2.0.ZU;2-4
Abstract
The novel perovskite-type oxides (Ln(1/2)Na(1/2))TiO3 (Ln = Dy, Ho, Er , Tm, Yb, Lu) were synthesized, and their crystal structures and diele ctric properties were examined. (Ln(1/2)Na(1/2))TiO3 (Ln = Dy, Ho, Er, Tm, Yb, Lu) possess an orthorhombic symmetry with space group Pnma si milar to (Ln(1/2)Na(1/2))TiO3 (Ln = Pr, Nd, Sm, Eu, Gd and Tb). Their lattice parameters and dielectric constants decrease with an increase in the atomic number of Ln (Ln = Dy to Lu). At low temperatures, (Ln(1 /2)Na(1/2))TiO3 (Ln = Dy, Ho, Er, Tm, Yb, Lu) shows quantum paraelectr ic behavior. (C) 1998 Elsevier Science B.V. All rights reserved.