%0 Journal Article
%A Grzechnik, A.
%A Ueda, Y.
%A Yamauchi, T.
%A Hanfland, M.
%A Hering, P.
%A Potapkin, V.
%A Friese, K.
%T Pressure-induced non-superconducting phase of β -Na 0.33 V 2 O 5 and the mechanism of high-pressure phase transitions in β -Na 0.33 V 2 O 5 and β -Li 0.33 V 2 O 5 at room temperature
%J Journal of physics / Condensed matter
%V 28
%N 3
%@ 1361-648X
%C Bristol
%I IOP Publ.
%M FZJ-2016-00380
%P 035401 -
%D 2016
%X The crystal structure of β-Na0.33V2O5 (C2/m, Z  =  6) has been studied on compression to 19 GPa at room temperature using synchrotron single-crystal diffraction in a diamond anvil cell. The vanadate bronze undergoes a phase transition to a non-superconducting phase at about 12 GPa due to changes of polyhedral connectivities in the vanadate framework and due to ordering of the Na+ cations. This novel structure (Cm, Z  =  6) is interpreted as an intermediate stage in the sequence of pressure-induced transformations in the β-A 0.33V2O5 bronzes (A: Li, Na) at room temperature. This study reveals the close relation between the loss of the two-leg ladder V–V system and non-superconducting state of the β-A 0.33V2O5 materials.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000368727000019
%R 10.1088/0953-8984/28/3/035401
%U https://juser.fz-juelich.de/record/280613