Synthesis, Structure, and Physical Properties of the Polar Magnet DyCrWO6

Ghara, Somnath ; Fauth, Francois ; Suard, Emmanuelle ; Rodriquez-Carvajal, Juan ; Sundaresan, A. (2018) Synthesis, Structure, and Physical Properties of the Polar Magnet DyCrWO6 Inorganic Chemistry, 57 (20). pp. 12827-12835. ISSN 0020-1669

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It has recently been reported that the ordered aeschynite-type polar (Pna21) magnets RFeWO6 (R = Eu, Tb, Dy, Y) exhibit type II multiferroic properties below TN ∼ 15–18 K. Herein, we report a comprehensive investigation of the isostructural oxide DyCrWO6 and compare the results with those of DyFeWO6. The cation-ordered oxide DyCrWO6 crystallizes in the same polar orthorhombic structure and undergoes antiferromagnetic ordering at TN = 25 K. Contrary to DyFeWO6, only a very weak dielectric anomaly and magnetodielectric effects are observed at the Néel temperature and, more importantly, there is no induced polarization at TN. Furthermore, analysis of the low-temperature neutron diffraction data reveals a collinear arrangement of Cr spins but a noncollinear Dy-spin configuration due to single-ion anisotropy. We suggest that the collinear arrangement of Cr spins may be responsible for the absence of electric polarization in DyCrWO6. A temperature-induced magnetization reversal and magnetocaloric effects are observed at low temperatures.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:119980
Deposited On:21 Jun 2021 06:25
Last Modified:21 Sep 2021 09:19

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