Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/10960
 Title: Magnetic structure and spin reorientation of quaternary Dy2Fe2Si2C Authors: Susilo, RACadogan, JMHutchison, WDStewart, GAAvdeev, MCampbell, SJ Keywords: Temperature range 0065-0273 KMagnetizationSpecific heatX-ray diffractionNeutron diffractionAntiferromagnetismMagnetic momentsMonoclinic lattices Issue Date: 7-Feb-2017 Publisher: IOP Publishing Citation: Susilo, R. A, Cadogan, J. M., Hutchison, W. D., Stewart, G. A., Avdeev, M., & Campbell. S. J. (2017). Magnetic structure and spin reorientation of quaternary Dy2Fe2Si2C. Journal of Physics: Condensed Matter, 29(11), 115806. doi:10.1088/1361-648X/aa52f9 Abstract: We have investigated the low temperature magnetic properties of Dy2Fe2Si2C by using magnetisation, specific heat, x-ray diffraction, neutron powder diffraction and 57Fe Mössbauer spectroscopy measurements over the temperature range 1.5 K–300 K. Dy2Fe2Si2C exhibits two magnetic transitions at low temperatures: an antiferromagnetic transition at ${{T}_{\text{N}}}\sim 26$ K and a spin-reorientation transition at ${{T}_{t}}\sim 6$ K. The magnetic structure above Tt can be described with a propagation vector $\mathbf{k}~=~\left(0~0~\frac{1}{2}\right)$ with the ordering of the Dy magnetic moments along the monoclinic b-axis whereas on cooling below Tt the Dy moment tips away from the b-axis towards the ac-plane. We find that the spin-reorientation in Dy2Fe2Si2C is mainly driven by the competition between the second-order crystal field term B20 and the higher-order terms, in particular B40 and B64. © 2017 IOP Publishing Ltd URI: https://doi.org/10.1088/1361-648X/aa52f9https://apo.ansto.gov.au/dspace/handle/10238/10960 ISSN: 1361-648X Appears in Collections: Journal Articles

Files in This Item:
There are no files associated with this item.