Effect of pressure on the magnetism of the two-dimensional antiferromagnet FePS3
The MPX3 (M = Fe, Ni, Mn and X = S, Se) family are quasi-2D antiferromagnets which crystallise with a monoclinic unit cell and a space group of C2/m. The transition metals form a very nearly perfect honeycomb lattice in the ab planes. The planes are bound by van-der-Waals forces and the compounds are enjoying a huge surge of interest from the graphene and low-dimensional materials community with recent studies demonstrating the persistence of magnetic order down to single atomic layers. Our goal in this experiment is to observe the evolution of the magnetism and magnetic structure with temperature and pressure in FePS3. Our previous measurements of electrical transport and of the crystal structure via synchrotron radiation have shown multiple structural transitions, and a Mott insulator - metal transition at high pressure. We wish to study how the magnetism evolves as we tune the system from 2D to 3D and from isolated electronic sites to a metallic state. We have just completed a series of measurements on D20 from 0-8 GPa and 80-300 K using the standard Paris-Edinburgh press - we propose to extend these measurements to higher pressures using a double-toroidal pressure cell.
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M.J. Coak; S E Dutton; C R S Haines; HAMIDOV Hayrullo; Thomas C. Hansen; David M Jarvis; KLOTZ Stefan; LIU Cheng; PARK Je-Geun; SAXENA Siddharth and WILDES Andrew. (2019). Effect of pressure on the magnetism of the two-dimensional antiferromagnet FePS3. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2646
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