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- W1991497183 abstract "Abstract Mossbauer studies of spin reorientation transitions in the high magnetostrictive materials RFe2(R = rareearth) were performed. The transitions studied were [100] → [110] (Ho0.9Tb0.1Fe2 at 240 K), [100] → [111] (Dy0.7Tb0.3Fe2 at 220 K), [110] → [100] (Ho0.5Er0.5Fe2 at 135 K and Ho0.3Tm0.7Fe2 at 110 K), [111] → [100] (Dy0.2Er0.8Fe2 at 140 K) and [110] → [111] (Ho0.7Tb0.3Fe2 at 120 K). The first four transitions were found to be of second order, continuous reorientation of magnetization. In Dy0.2Er0.8Fe2 and Ho0.7Tb0.3Fe2 a sharp discontinuous first order transition is observed. In all systems the Mossbauer recoil free fraction, its anisotropy, the isomer shift and hyperfine interaction parameters change sharply through the spin reorientation transition. All phenomena observed can be understood in terms of changes in static magnetostrictive distortions combined with critical phonon softening at the spin reorientation phase transitions. The system Ho1-xTbxFe2 is unique in behaviour as Ho0.9Tb0.1Fe2 shows the highest magnetostrictive effects, whereas Ho0.7 Tb0.3Fe2 shows almost none." @default.
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- W1991497183 date "1981-02-01" @default.
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- W1991497183 title "Magnetostrictive effects at a spin reorientation transition in a cubic crystal" @default.
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- W1991497183 doi "https://doi.org/10.1016/0304-8853(81)90028-7" @default.
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