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Updated: Jun 9, 2025

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
Published on: October 5, 2013
Magnetic order in nanogranular iron germanium (Fe0.53Ge0.47) films
Ruthi Zielinski1, Nhat Nguyen1, Bryce Herrington1
1Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, United States of America.
Abstract:
We study the effect of strain on the magnetic properties and magnetization configurations in nanogranular FeGe1-xfilms (x=0.53±0.05) with and without B20 FeGe nanocrystals surrounded by an amorphous structure. Relaxed films on amorphous silicon nitride membranes reveal a disordered skyrmion phase while films near and on top of a rigid substrate favor ferromagnetism and an anisotropic hybridization of Fedlevels and spin-polarized Gespband states. The weakly coupled topological states emerge at room temperature and become more abundant at cryogenic temperatures without showing indications of pinning at defects or confinement to individual grains. These results demonstrate the possibility to control magnetic exchange and topological magnetism by strain and inform magnetoelasticity-mediated voltage control of topological phases in amorphous quantum materials.
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