Peter Meisenheimer, Guy Moore, Shiyu Zhou, Hongrui Zhang, Xiaoxi Huang, Sajid Husain, Xianzhe Chen, Lane W Martin, Kristin A Persson, Sinéad Griffin, Lucas Caretta, Paul Stevenson, Ramamoorthy Ramesh
Bismuth ferrite (BiFeO3 ) is a multiferroic material that exhibits both ferroelectricity and canted antiferromagnetism at room temperature, making it a unique candidate in the development of electric-field controllable magnetic devices. The magnetic moments in BiFeO3 are arranged into a spin cycloid, resulting in unique magnetic properties which are tied to the ferroelectric order. Previous understanding of this coupling has relied on average, mesoscale measurements. Using nitrogen vacancy-based diamond magnetometry, we observe the magnetic spin cycloid structure of BiFeO3 in real space...
April 4, 2024: Nature Communications