Magnetization of YbFe2O4+x

Abstract
Magnetizations of hexagonal compounds YbFe 2 O 4+ x (polycrystals with x =-0.027, -0.003 and +0.015 and a single crystal with x =+0.03) have been measured in a temperature range between 4.2 K and room temperature. Remanent magnetizations are induced by magnetic fields applied during cooling below about 250 K. Dependences of lattice parameters on x and temperature have also been determined. No lattice distortion occurs at low temperatures in contrast to the case of YFe 2 O 4 .

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