The antiferromagnetic structure of DyMn₂O₅at 4.2K

Spin structure and magnetic frustration in multiferroicRMn2O5(R=TbBlake1, Chapon2, Radaelli3 et al. 2005Phys. Rev. B271283415View full textAdd to dashboardCite

“…For DyMn 2 O 5 the best solution was essentially the same as that reported by Wilkinson et al 14 The refined magnetic parameters are summarized in Table II and schematic representations of the magnetic structures in the ab plane are shown in Fig. 5.…”

Confinement of chiral magnetic modulations in the precursor region of FeGe

“…The sense of the magnetization rotation is fixed due to the presence of the chiral DzyaloshinskiiMoriya (DM) interaction [20,21]. However, in their magnetic field−temperature, (H, T ), phase diagrams, as sketched in figure 1(a), numerous puzzling physical anomalies have been observed in a narrow temperature interval in the vicinity of T C [8,10,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42]. The origin of these "precursor anomalies" (hatched area in figure 1(a)) and notably the magnetic structure of the so-called A phase is a long-standing and intriguing problem in chiral magnetism.…”

Structural anomalies at the magnetic and ferroelectric transitions inRMn2O5(R=Cruz1, Yen2, Lorenz3 et al. 2006Phys. Rev. B

“…With further decreasing temperature, at T C2 , the CM phase becomes unstable towards a lowtemperature IC phase ͑LTIC͒ with a magnetic modulation q ជ Ϸ͑0.48,0,0.3͒. 5,[8][9][10]13,14 The transition at T C2 is accompanied by a significant decrease of the FE polarization and is often referred to as a second FE phase transition. In some rare earth compounds ͑e.g., HoMn 2 O 5 , DyMn 2 O 5 ͒ additional anomalies have been observed indicating an even more complex magnetic structure that has yet to be explored.…”