Coexistence of 1 : 2 and 1 : 1 long-range ordering types in La-modified Ba(Mg0.33Ta0.67)O3 ceramics
- 1 March 1997
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 12 (3) , 589-592
- https://doi.org/10.1557/jmr.1997.0085
Abstract
The ordering structure of lanthanum-substituted Ba(Mg0.33Ta0.67)O3 was investigated using x-ray diffraction. It was observed that the ordering type of this solid solution transformed from 1: 2 to 1: 1 with 10 mol% substitution of La(Mg0.67Ta0.33)O3. These two types of ordering coexist over a wide range of composition. This coexistence of ordering types was considered as phase coexistence and its physical origin was investigated using microwave measurements. Based on the intensity of superlattice reflections and the discontinuity in dielectric properties, it was suggested that the coexistence of two ordering types originates from the overlap of the two stability regions.Keywords
This publication has 9 references indexed in Scilit:
- Structural Studies of Ordering in the (Pb1‐xBax)(Mg1/3Nb2/3)O3 Crystalline Solution SeriesJournal of the American Ceramic Society, 1995
- Distribution functions of coexisting phases in a complete solid solution systemJournal of Applied Physics, 1993
- Ordering Behavior of Lead Magnesium Niobate Ceramics with A‐Site SubstitutionJournal of the American Ceramic Society, 1990
- Ordering Structure and Dielectric Properties of Undoped and La/Na‐Doped Pb(Mg1/3Nb2/3)O3Journal of the American Ceramic Society, 1989
- Structural phase transitions and long-range order in ferroelectric perovskite lead indium niobateJournal of Physics C: Solid State Physics, 1986
- Ba(Zn1/3Ta2/3)O3 Ceramics with Low Dielectric Loss at Microwave FrequenciesJournal of the American Ceramic Society, 1983
- The role of B-site cation disorder in diffuse phase transition behavior of perovskite ferroelectricsJournal of Applied Physics, 1980
- Ordering in Compounds of the A(B'0.33Ta0.67)O3 TypeInorganic Chemistry, 1963
- A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter RangeIEEE Transactions on Microwave Theory and Techniques, 1960