Magnetic dynamics in the high-pressure phase of antiferromagnet FePS3
The MPX3 materials (M = Fe, Ni, Mn; X = S, Se) are a family of quasi-2D antiferromagnetic insulators, with most sharing a similar monoclinic unit cell and C2/m space group. The metal M2+ ions form a honeycomb lattice in the ab planes, which are weakly coupled by van der Waals forces. These layered magnets are of significant current interest in low-dimensional materials communities. Our previous studies show that FePS3 undergoes two structural transitions under pressure, the second of which coincides with the metallisation of the system. Through record breaking high-pressure neutron diffraction at the ILL we have shown that both of these transitions induce changes in the magnetic structure of FePS3, by changing the inter-layer coupling and introducing a new form of short-range magnetic order at the highest pressures. We propose here to develop this further by measuring the evolution of magnetic dynamics into the first high pressure phase. We will use high-pressure apparatus at low-temperature on PANTHER to measure inelastic scattering above 4 GPa. This will develop our understanding of these materials whilst also advancing the capability for high-pressure experiments at the ILL.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
David M Jarvis; M.J. Coak; Shiyu Deng; FAK Bjorn; C R S Haines; KLOTZ Stefan; KOZA Michael Marek; LIU Cheng; SAXENA Siddharth and WILDES Andrew. (2021). Magnetic dynamics in the high-pressure phase of antiferromagnet FePS3. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1751
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This data is not yet public
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