Crystal structure of low-temperature rubidium monoaluminate modification

Rubidium monoaluminate RbAlO 2 has been studied by powder neutron diffraction and differential scanning calorimetry. A structural phase transition has been found at 1050°C. It is shown that the low-temperature modification RbAlO2 has the orthorhombic structure ( Pnma , a = 0.5570(2) nm, b = 1.1189(4...

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Bibliographic Details
Published in:Physics of the solid state 2013-02, Vol.55 (2), p.427-429
Main Authors: Shekhtman, G. Sh, Volegova, E. I., Voronin, V. I., Berger, I. F., Burmakin, E. I.
Format: Article
Language:English
Subjects:
Crystals
Phase Transitions
Physics
Physics and Astronomy
Solid solutions
Solid State Physics
Structure
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Summary:Rubidium monoaluminate RbAlO 2 has been studied by powder neutron diffraction and differential scanning calorimetry. A structural phase transition has been found at 1050°C. It is shown that the low-temperature modification RbAlO2 has the orthorhombic structure ( Pnma , a = 0.5570(2) nm, b = 1.1189(4) nm, c = 1.5818(6) nm) close to the crystal structures of low-temperature modifications RbGaO 2 and RbFeO 2 , not a face-centered cubic structure, as assumed previously.
ISSN:1063-7834
1090-6460
DOI:10.1134/S106378341302025X