Magnetic order in frustrated Kagome-Triangular lattice antiferromagnet NaBa2Mn3F11

We performed powder neutron diffraction experiments on NaBa2Mn3F11 [1], a model compound of \textit{Kagome-Triangular} lattice where three of six next-nearest neighbor interactions are non-negligible. More than 10 magnetic Bragg peaks are clearly observed below T= 2 K, meaning that the ground state is a magnetically ordered state. From indexing the magnetic Bragg peaks, magnetic propagation vector of \textbf{\textit{q}}0= (0, 0, 0) and two incommensurate vectors which are close to (1/3, 1/3, 0) are identified. Combination of representation analysis and Rietveld refinement reveals that the propagation vector of \textbf{\textit{q}}0 exhibits the 120º structure in the \textit{ab}-plane. Our calculation of the ground state suggests that the non-negligible magnetic dipolar interaction is responsible for the determined 120º structure in NaBa2Mn3F11. © 2021 American Physical Society
Neutron diffraction, Bragg curve, Vectors, Magnetic dipoles, Antiferromagnetism, Magnetic properties
Hayashida, S., Ishikawa, H., Okamoto, Y., Okubo, T., Hiroi, Z., Avdeev, M., Manuel, P., Hagihala, M., Soda, M., Masuda, T. (2017). Magnetic order in frustrated Kagome-Triangular lattice antiferromagnet NaBa2Mn3F11. Paper presented at APS March Meeting, March 13–17, New Orleans, Louisiana. In Bulletin of the American Physical Society, 62(4), X48.008. Retrieved from: