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- W1973993811 abstract "We have synthesized the Dy2Fe17 alloy with an unconventional crystal structure (R3¯m space group). Neutron powder thermo-diffraction and X-ray powder diffraction under high pressure (up to 15 GPa) show that the rhombohedral crystal structure is stable. Likewise, the alloy with the usual hexagonal crystal structure (P63/mmc), the rhombohedral variant of Dy2Fe17 compound, exhibits a collinear ferrimagnetic order below the Curie temperature (TC ≈ 363 K), with antiparallel mutual alignment of the Dy and Fe sublattices. Additionally, we have observed two distinctive issues related to magneto-volume anomalies: (i) the pressure dependence of the cell volume at room temperature shows the existence of a critical pressure at which the compound is no longer ferrimagnetic; and (ii) the cell volume shows invar-like behaviour in a wide temperature range (2–290 K), with a minimum at T ≈ 380 K. The spontaneous volume magnetostriction reaches ωS = 1.6 × 10−2 at 2 K that decreases to zero at T ≈ 500 K (≈1.4 TC), which is associated with the existence of short-range magnetic correlations." @default.
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- W1973993811 date "2013-12-01" @default.
- W1973993811 modified "2023-10-17" @default.
- W1973993811 title "Exploring the magneto-volume anomalies in Dy2Fe17 with unconventional rhombohedral crystal structure" @default.
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- W1973993811 doi "https://doi.org/10.1016/j.actamat.2013.09.034" @default.
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