Possibility of Emergence of Chiral Magnetic Soliton in Hexagonal Metal Formate [NH4][M(HCOO)3] with M2+ = Mn, Fe, Co, and Ni and KCo(HCOO)3

摘要

Search of chiral magnetic solitons on the basis of the data on the crystalstructure is important from both fundamental and technological points of view.Potential chiral magnetic solitons - hexagonal metal formates [NH4][M(HCOO)3]with M2+ = Mn, Fe, Co, and Ni and KCo(HCOO)3 containing dominating left-handedchiral antiferromagnetic helices that compete with interhelix interactions havebeen identified. The sign and strength of magnetic interactions not onlybetween nearest neighbors, but also for longer-range neighbors in the metalformates have been calculated on the basis of structural data. Magneticstructures of these compounds are similar to that of the chiral magneticsoliton Cr1/3NbS2. The interrelation between chiral polarization of crystallineand magnetic structures in the metastable polymorph KCo(HCOO)3 has beendemonstrated.