Abstract
We show that the transition in AMnO(3) from the orthorhombic perovskite phase to the hexagonal phase is promoted by inducing site disorder on the A-site. The gap between the orthorhombic and the hexagonal phase is widened for site disordered, mixed yttrium-gadolinium manganite samples. At the cost of the orthorhombic phase, a two phase region emerges. The phase separation exhibits very unusual thermodynamical behavior. We also show that high-pressure synthesis favors the orthorhombic phase. YMnO3 is formed in the orthorhombic phase at 15 kbar.
Original language | English |
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Pages (from-to) | 4804-4807 |
Number of pages | 4 |
Journal | Chemistry of Materials |
Volume | 13 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2001 |