Optimization on magnetic anisotropy and magnetostriction in Tb Ho0.8−Pr0.2(Fe0.8Co0.2)1.93 compounds

Liu, X. Y.; Liu, J. J.; Pan, Zhongbin; Song, Xiaohui; Zhang, Z. R.; Du, Junjie; Ren, Weijun

doi:10.1016/j.jmmm.2015.04.083

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…4, for which the magnetization curve for x = 0.12 tends to saturation faster than others. Therefore, the compensation point is achieved to be near x = 0.12 for the Pr/Mn-doped (Tb,Ho)Fe 2 system, shifting to the Tb-poor side at RT in comparison with the Codoped and Pr/Mn-free counterparts [1,25,26]. In other words, similar to the behavior of Tb element, the Mn contribution in resultant anisotropy is opposite to that of Ho.…”

Section: Resultsmentioning

confidence: 90%

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Wang

Liu

et al. 2020

Materials Science-Poland

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Magnetostrictive TbxHo0.8−xPr0.2Fe1.8Mn0.1 (0 ⩽ x ⩽ 0.20) alloys are prepared by arc-melting and subsequent annealing. The dopant of Pr/Mn introduced into RFe2 compounds effectively stabilizes the forming of single C15 Laves phase at ambient pressure. The easy magnetization direction (EMD) varies when Tb content increases, which is accompanied by a crystal-structural transition. EMD lies along ‹1 0 0› axis for x ⩽ 0.05, rotating to ‹1 1 1› axis for x ⩽ 0.12, with a tetragonal symmetry changing to a rhombohedral one. Magnetocrystalline-anisotropy compensation is obtained with the optimized composition of x = 0.12, shifting to the Tb-poor side in comparison to Pr/Mn-free counterpart. An enhanced effect on magnetoelastic properties is achieved in Tb0.12Ho0.68Pr0.2Fe1.8Mn0.1, which simultaneously possesses a low anisotropy and high magnetostriction performance, i.e. λS ~ 420 ppm, λ111 ~ 970 ppm, and a large low-field λa ~ 390 ppm/2 kOe, being 30 % higher than that of Pr/Mn-free compound. Combining low-cost light rare earth Pr with the lower Tb content, Tb0.12Ho0.68Pr0.2Fe1.8Mn0.1 may make it promising solution in magnetostrictive applications.

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Section: Resultsmentioning

confidence: 90%

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Wang

Liu

et al. 2020

Materials Science-Poland

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“…as well as our earlier reported Mössbauer spectra measurements, we are able to identify the anomalies corresponding to the spin reorientations. [8,10,13,[16][17][18][19][20]29,30] For x = 0, an anomaly appears in the form of a peak at 74 K, which is identified as a spin reorientation taking place from ⟨100⟩ to ⟨111⟩. Then this anomalies seems to shift to approximately 120 K when x increases from 0.0 to 0.15.…”

Section: Resultsmentioning

confidence: 99%

Magnetostriction and spin reorientation in ferromagnetic Laves phase Pr(Ga_xFe_1–x)_1.9 compounds*

Zeng¹,

Tang²,

Mei³

et al. 2021

Chinese Phys. B

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The magnetostriction, magnetization, and spin reorientation properties in Pr(Ga x Fe1 – x )1.9 alloys have been investigated by high-precision x-ray diffraction (XRD) step scanning, magnetization, and Mössbauer spectra measurements. Ga substitution reduces the magnetostriction (λ ||) with magnetic field H ≥ 8 kOe (1 Oe = 1.33322 × 102 Pa), but it also increases the λ || value when H ≤ 8 kOe at 5 K. Spin-reorientations (SR) are observed in all the alloys investigated, as determined by the step scanned XRD, Mössbauer spectra, and the abnormal temperature dependence of magnetization. An increase of the spin reorientation temperature (T SR) due to Ga substitution is found in the phase diagram, which is different from the decrease one in many R(Tx Fe1 – x )1.9 (T = Co, Al, Mn) alloys. The present work provides a method to control the easy magnetization direction (EMD) or T SR for developing an anisotropic compensation system.

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“…[11,16,17] Among them, Pr 1−x Tb x Fe 1.9 is a promising anisotropy compensating system, while many Tb alloys have favorable characteristics at low magnetic fields. [18][19][20][21][22][23] Since the easy magnetic direction (EMD) of PrFe 2 lies along [100], while the easy magnetic direction of TbFe 2 lies along [111] at low temperatures, [1,15] their magnetocrystalline anisotropy constants with different signs may be offset by each other. [24] In addition, TbFe 2 has large magnetostriction (λ 111 ∼ 4400 ppm at 0 K) and the same sign of the magnetostriction as PrFe 2 , which might enlarge the low-field magnetostriction in the Pr 1−x Tb x Fe 1.9 system with appropriate Tb component.…”

Section: Introductionmentioning

confidence: 99%

Influence of Tb on easy magnetization direction and magnetostriction of PrFe_1.9 alloy*

Tang

et al. 2019

Chinese Phys. B

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The crystal structures, magnetization, and spontaneous magnetostriction of ferromagnetic Laves phase Pr1 − x Tbx Fe1.9 compounds are investigated in a temperature range between 5 K and 300 K. High resolution synchrotron x-ray diffraction (XRD) analysis shows that different proportions of Tb in Pr1 − x Tb x Fe1.9 alloys can result in different easy magnetization directions (EMD) below 70 K, i.e., [100] with x = 0.0, and [111] with x ≥ 0.1. This indicates Tb substitution can lead the EMD to change from [100] to [111] with x rising from 0.0 up to 0.1. The Tb substitution for Pr reduces the saturation magnetization M s and the magnetostriction to their minimum value when x = 0.6, but it can increase low-field (0 ≤ H ≤ 9 kOe, the unit 1 Oe = 79.5775 A · m−1) magnetostriction when x = 0.8 and 1.0 at 5 K. This can be attributed to the larger magnetostriction of PrFe1.9 than that of TbFe1.9, as well as the decrease of the resulting anisotropy due to Tb substitution at low temperatures.

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Optimization on magnetic anisotropy and magnetostriction in Tb Ho0.8−Pr0.2(Fe0.8Co0.2)1.93 compounds

Cited by 6 publications

References 16 publications

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Magnetostriction and spin reorientation in ferromagnetic Laves phase Pr(Ga_xFe_1–x)_1.9 compounds*

Influence of Tb on easy magnetization direction and magnetostriction of PrFe_1.9 alloy*

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Optimization on magnetic anisotropy and magnetostriction in Tb Ho0.8−Pr0.2(Fe0.8Co0.2)1.93 compounds

Cited by 6 publications

References 16 publications

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe2 compounds

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe2 compounds

Magnetostriction and spin reorientation in ferromagnetic Laves phase Pr(Ga x Fe1–x )1.9 compounds*

Influence of Tb on easy magnetization direction and magnetostriction of PrFe1.9 alloy*

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Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Magnetostriction and spin reorientation in ferromagnetic Laves phase Pr(Ga_xFe_1–x)_1.9 compounds*

Influence of Tb on easy magnetization direction and magnetostriction of PrFe_1.9 alloy*