Neutron scattering in studies of Fe-based functional alloys (Fe-Ga, Fe-Al et al.)
I.S. Golovinb aJoint Institute for Nuclear Research, 6 Joliot-Curie Str., Dubna, Moscow Region, 141980, Russian Federation bNational University of Science and Technology "MISIS", Leninskii prosp. 4, Moscow, 119049, Russian Federation
The phenomenon of giant magnetostriction in iron-gallium alloys, discovered in the early 2000s, caused a large number of experimental and theoretical works. However, despite 20 years of efforts, the physical basis for the formation of this important functional property is not fully understood. The models currently being discussed are based on the idea of specifically ordered microscopic regions formed in a disordered crystal matrix. In studies of such crystals structural states, a special role belongs to the methods of x-ray (synchrotron), electron and neutron scattering. The review discusses the current situation with structural studies of Fe-Ga and Fe-Al alloys with an emphasis on the use of neutron diffraction.
Keywords: Fe-Ga and Fe-Al alloys, giant magnetostriction, atomic structure, phase transitions, neutron diffraction PACS:61.66.Dk, 75.80.+q, 64.60.Cn, 61.12.Ld (all) DOI:10.3367/UFNe.2020.11.038886 Citation: Balagurov A M, Golovin I S "Neutron scattering in studies of Fe-based functional alloys (Fe-Ga, Fe-Al et al.)" Phys. Usp., accepted
Received: 21st, June 2020, revised: 23rd, November 2020, accepted: 24th, November 2020