Hydrogen-bond ordering in the proton conductors hydrogen uranyl phosphate and arsenate tetrahydrates
Abstract
An H-bond ordering scheme is proposed for hydrogen uranyl arsenate HUO2AsO4·4H2O which explains the observed transition from high to low values of conductivity, the antiferroelectric ordering, and the twinning behaviour, and is consistent with recent X-ray and i.r. data; evidence implies that HUO2PO4·4H2O also orders in the same way.
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