Archivio Istituzionale della RicercaThe crystal structure of the low-temperature garnet-like form of tri-sodium diiron(III) triarsenate, Na3Fe2(AsO4)3, exhibits a three-dimensional framework with small tunnels running along the [111] direction, in which the Na + cations are located. This study demonstrates the structural origins of the different ionic conductivities of the low- and high-temperature forms. Sodium conduction properties are simulated by means of the bond-valence-sum (BVS) model; the correlations between the low- and high-temperature crystal structures are discussed. The As, Fe and Na atoms lie on special positions (Wyckoff symbols 24d, 16a and 24c, respectively).
L'arseniate Na3Fe2(AsO4)3 :etude structurale de la forme basse temperature et simulation des proprietes de conduction des cations alcalins / N., Ouerfelli; A., Guesmi; Mazza, Daniele; M. FAOUZI ZID AND A., Driss. - In: ACTA CRYSTALLOGRAPHICA. SECTION C, CRYSTAL STRUCTURE COMMUNICATIONS. - ISSN 0108-2701. - C64:(2008), pp. i41-i44. [10.1107/S0108270108009050]
L'arseniate Na3Fe2(AsO4)3 :etude structurale de la forme basse temperature et simulation des proprietes de conduction des cations alcalins.
MAZZA, Daniele;
2008
Abstract
The crystal structure of the low-temperature garnet-like form of tri-sodium diiron(III) triarsenate, Na3Fe2(AsO4)3, exhibits a three-dimensional framework with small tunnels running along the [111] direction, in which the Na + cations are located. This study demonstrates the structural origins of the different ionic conductivities of the low- and high-temperature forms. Sodium conduction properties are simulated by means of the bond-valence-sum (BVS) model; the correlations between the low- and high-temperature crystal structures are discussed. The As, Fe and Na atoms lie on special positions (Wyckoff symbols 24d, 16a and 24c, respectively).
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https://hdl.handle.net/11583/1814426
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