TY  - JOUR
AU  - Grzechnik, A.
AU  - Ueda, Y.
AU  - Yamauchi, T.
AU  - Hanfland, M.
AU  - Hering, P.
AU  - Potapkin, V.
AU  - Friese, K.
TI  - 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
JO  - Journal of physics / Condensed matter
VL  - 28
IS  - 3
SN  - 1361-648X
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2016-00380
SP  - 035401 -
PY  - 2016
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000368727000019
DO  - DOI:10.1088/0953-8984/28/3/035401
UR  - https://juser.fz-juelich.de/record/280613
ER  -