Abstract
The ordering behaviour of Ba(Mg1/3Nb2/3)O3 ceramics (BMN) substituted by La3+, Na+, K+ was investigated using X-ray powder diffraction and transmission electron microscopy. The 1:2 ordered structure of BMN can be transformed to 1:1 ordered structure by substituting a small amount of La cation ion into the A-site. Moreover, the degree of ordering was increased with La content in the compound, and reached almost unity at [La] = 50 mol%. When the La ion in (Ba1-xLax)(Mg(1+x)/3Nb(2-x)/3)O3 (BLMN) was substituted by Na or K ions, the 1:1 ordered structure of BLMN was transformed into the 1:2 ordered structure. The degree of 1:2 ordering was influenced by the sintering temperature and the size difference between the A and B site ions.
Original language | English |
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Pages (from-to) | 2885-2888 |
Number of pages | 4 |
Journal | Journal of the European Ceramic Society |
Volume | 26 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2006 |
Keywords
- Ordering
- Perovskite
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry