doi:10.1088/1742-6596/551/1/012035
ISI:000347715800035
Mansson, M.
Umegaki, I.
Nozaki, H.
Higuchi, Y.
Kawasaki, I.
Watanabe, I.
Sakurai, H.
Sugiyama, J.
Na-ion dynamics in Quasi-1D compound NaV2O4
We have used the pulsed muon source at ISIS to study high-temperature Na-ion dynamics in the quasi-one-dimensional (Q1D) metallic antiferromagnet NaV2O4. By performing systematic zero-field and longitudinal-field measurements as a function of temperature we clearly distinguish that the hopping rate increases exponentially above T-diff similar to 250 K. The data is well fitted to an Arrhenius type equation typical for a diffusion process, showing that the Na-ions starts to be mobile above TdIff.. Such results make this compound very interesting for the tuning of Q1D magnetism using atomic-scale ion-texturing through the periodic potential from ordered Na-vacancies. Further, it also opens the door to possible use of NaV2O4 and related compounds in energy related applications.
2015-02-20T09:05:11Z
http://infoscience.epfl.ch/record/205204