Measurement of the sign of the magnetic moment for unstable nuclei using newly developed rotating radio-frequency field system. - Ozawa, A; Tomita, K; Moriguchi, T; Abe, Y; Hayashi, M; Inaba, N; Ishibashi, Y; Kaname, N; Moriyama, A; Mukai, M; Nagae, D; Niwa, T; et al. (Progress of Theoretical & Experimental Physics: PTEP, 2025)