Abstract
A single crystal of Tb was examined under uniaxial tension applied along the hexagonal axis by a x-ray dilatometry and resistive strain sensors. The experiment was carried out well above the magnetic ordering temperature.The strain-stress dependencies obtained exhibit the characteristic violation of linearity that is evidently due to the change in the Fermi surface topology caused by strain. This electron-topological transition is presumably responsible for the recently observed change in the magnetic ordering type in the same sample.
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