Abstract
We report long periodic chiral helimagnetic orderings in ferromagnetic inorganic compounds CrM3S6 (M = Nb and Ta) with a chiral space group of P6322. Magnetization in polycrystalline samples and high resolution powder neutron diffraction were measured. Our powder neutron diffraction measurements in CrM3S6 successfully separated nuclear and magnetic satellite peaks, having the period of hundreds of angstroms along the c— axis. Therefore, we propose that the magnetic ordering in ferromagnetic CrM3S6 is not ferromagnetic, but long periodic chiral helimagnetic ordering.
Highlights
Chirality concept is playing a very important role in different areas of the knowledge from applied science such as new materials, nano, spintronic and biosciences to very basic sciences such as particle physics and cosmology
When a magnetic field is applied perpendicular to the helical axis, the chiral helimagnetic structure continuously transforms into chiral magnetic soliton lattice in which the period is controlled by the field continuously [6]
In ferromagnetic-based chiral magnetic compounds, it can be shown that a cusp appears at the ordering temperature in the magnetization curves, which is an evidence of the chiral magnetic orderings [12]
Summary
Chirality concept is playing a very important role in different areas of the knowledge from applied science such as new materials, nano, spintronic and biosciences to very basic sciences such as particle physics and cosmology. CrNb3S6 has been recently paid attention due to the observation of the chiral helimagnetism and chiral magnetic soliton lattice. In single crystalline magnetization samples of CrNb3S6 and MnNb3S6, the magnetization shows a cusp around the magnetic transition temperature TC, indicating formation of the chiral helimagnetism and chiral magnetic soliton lattice along the c−axis [19].
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