High pressure synthesis and crystal data of the rare earth orthoaluminates

Single crystals of the rare earth orthoaluminates, REAlO 3, with RE = Dy − Lu, have been synthesized at high pressure in the presence of a flux. Lattice parameters for the orthorhombic members of the series, Sm-Lu, are reported. The a and c lattice parameters decrease smoothly in the direction Sm to...

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Bibliographic Details
Published in:Materials research bulletin 1971-01, Vol.6 (6), p.433-439
Main Authors: Dernier, P.D., Maines, R.G.
Format: Article
Language:English
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Summary:Single crystals of the rare earth orthoaluminates, REAlO 3, with RE = Dy − Lu, have been synthesized at high pressure in the presence of a flux. Lattice parameters for the orthorhombic members of the series, Sm-Lu, are reported. The a and c lattice parameters decrease smoothly in the direction Sm to Lu but the b parameter increases asymptotically to a maximum value at Lu. The anomalous behavior of the b parameter is similar to the variation of this parameter in the isostructural REFeO 3 series between La and Gd. For these latter compounds the variation has been explained in terms of a gradual change in the coordination number of the rare earth cation. A similar mechanism appears to be the cause in the case of the rare earth orthoaluminates.
ISSN:0025-5408
1873-4227
DOI:10.1016/0025-5408(71)90020-1