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Low-temperature phase transitions in GdS, GdSe and GdTe

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Zeitschrift für Physik B Condensed Matter

Abstract

In the Gd monochalcogenides up to three different structural distortions have been detected in the magnetically ordered regime. Our experiments indicate that all three phases show type II antiferromagnetic order but with different orientations of the magnetic moments: A truly trigonal phase withm k k=[1/2, 1/2, 1/2], a monoclinic phase witha≈b≈c, β=π/2+Δβ, and the spins oriented along [110], and a pseudo-rhombohedrally compressed monoclinic phase with the spins in the (111) planes. The spin flips can be accounted for by a model including anisotropic exchange interactions.

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Hulliger, F., Siegrist, T. Low-temperature phase transitions in GdS, GdSe and GdTe. Z Physik B 35, 81–90 (1979). https://doi.org/10.1007/BF01322085

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  • DOI: https://doi.org/10.1007/BF01322085

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