This article is cited in 2 papers

Phase transitions

Crystal structure of low-temperature rubidium monoaluminate modification

G. Sh. Shekhtman^a, E. I. Tikhomirova^a, V. I. Voronin^b, I. F. Berger^c, E. I. Burmakin<sup>a

a</sup> Institute of High-Temperature Electrochemistry, RAS, Ekaterinburg
^b Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg
^c Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg

Abstract: Rubidium monoaluminate RbAlO$_2$ has been studied by powder neutron diffraction and differential scanning calorimetry. A structural phase transition has been found at 1050$^\circ$C. It is shown that the low-temperature modification RbAlO$_2$ 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.

Received: 12.07.2012

 English version: Physics of the Solid State, 2013, 55:2, 427–429

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