Na-ion dynamics in Quasi-1D compound NaV2O4

13th International Conference on Muon Spin Rotation, Relaxation and Resonance

Månsson, M.^1,2 ; Umegaki, I.^3 ; Nozaki, H.^3 ; Higuchi, Y.^3 ; Kawasaki, I.^4 ; Watanabe, I.^4 ; Sakurai, H.^5 ; Sugiyama, J.^3

Laboratory for Quantum Magnetism, École Polytechnique Fédérate de Lausanne (EPFL), Lausanne

CH-1015, Switzerland^1

Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, Villigen PSI

CH-5232, Switzerland^2

Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi

480-1192, Japan^3

Advanced Meson Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama

351-0198, Japan^4

National Institute for Materials Science, Tsukuba, Namiki, Ibaraki

305-0044, Japan^5

关键词: Antiferromagnets;    Arrhenius-type equation;    Diffusion process;    High temperature;    Longitudinal fields;    Periodic potentials;    Quasi-one dimensional;    Related compounds;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/551/1/012035/pdf
DOI  :  10.1088/1742-6596/551/1/012035

来源: IOP

【 摘 要 】

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 Tdiff 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.