Static and dynamic magnetic properties of P\={3}1m-phase MnSb2O6 have been studied by means of muon spin relaxation (μSR), high-frequency electron spin resonance (HF-ESR), specific heat, and magnetisation studies in magnetic fields up to 25\,T. The data imply onset of long-range antiferromagnetic order at TN =~8~K and a spin-flop-like transition at BSF≈0.7−1~T. Below TN, muon asymmetry exhibits well-defined oscillations indicating a narrow distribution of the local fields. A competing antiferromagnetic phase appearing below T2 =~5.3~K is evidenced by a step in the magnetisation and a slight kink of the relaxation rate. Above TN , both μSR and HF-ESR data suggest short-range spin order. HF-ESR data show that local magnetic fields persist up to at least 12⋅TN≈100\,K. Analysis of the antiferromagnetic resonance modes and the thermodynamic spin-flop field suggest zero-field splitting of Δ≈18\,GHz which implies small but finite magnetic anisotropy.
@article{arxiv.1806.06555,
title = {Magnetism and the phase diagram of MnSb$_2$O$_6$},
author = {C. Koo and J. Werner and M. Tzschoppe and M. Abdel-Hafiez and P. K. Biswas and R. Sarkar and H. -H. Klauss and G. V. Raganyan and E. A. Ovchenkov and A. Yu. Nikulin and A. N. Vasiliev and E. A. Zvereva and R. Klingeler},
journal= {arXiv preprint arXiv:1806.06555},
year = {2018}
}