Magnetoelastic properties of Gd(Fe1−xCox)2 and Dy(Fe1−xCox)2

Lü, Ruo–yang; Hashimoto, Toshimasa; Funayama, T.; Sahashi, M.; Toriyama, T.

doi:10.1016/0304-8853(95)00410-6

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…This can be attributed to the additional spontaneous magnetostriction λ 100 caused by the filling of the 3d-band with transition-metal substitution. 41,42 Meanwhile, the magnetocrystalline anisotropy is also affected by the spin-orbit interaction due to the 3d-4f hybridization. 23,25 In this case, the spin-structure phase diagram can be tailored by changing the concentrations of Tb and Ho.…”

Section: Resultsmentioning

confidence: 99%

Room-temperature ultrasensitive magnetoelastic responses near the magnetic-ordering tricritical region

Zhang

Cai

et al. 2021

Journal of Applied Physics

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The morphotropic phase boundary (MPB) has been recently extended from ferroelectrics to ferromagnets, especially for giant magnetostrictive materials. The giant magnetostrictive system in turn presents abundant research opportunities on MPB investigation. In this work, we demonstrate that a magnetic-ordering tricritical type MPB near room temperature can be constructed in the TbxHo1−x(Fe0.9Co0.1)2 magnetostrictive system. An ultrahigh magnetostrictive sensitivity is obtained that achieves the performance of the commercial Tb0.27Dy0.73Fe2 (Terfenol-D) polycrystal in the Tb0.2Ho0.8(Fe0.9Co0.1)2 alloy. The detailed domain microstructures near the magnetic-ordering tricritical region are determined using phase-field simulations. Our results provide the underlying insights of magnetic-ordering tricritical MPB needed to guide the design of ultrasensitive magnetostrictive materials.

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Section: Resultsmentioning

confidence: 99%

Room-temperature ultrasensitive magnetoelastic responses near the magnetic-ordering tricritical region

Zhang

Cai

et al. 2021

Journal of Applied Physics

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“…On the other hand, although the transition metal (TM) sublattice contributes little to the magnetocrystalline anisotropy because of the quenching of the 3d orbital angular moments, it has been reported that the doping with transition metal could modulate the exchange interactions of 3d-3d and 3d-4f and increase the elastic and magnetostatic energies of the RFe 2 systems [26][27][28]. Especially, it was found that a small amount of Co substitution for Fe could change the Curie temperature, saturation magnetization and increase tetragonal distortion of RFe 2 compounds [29][30][31][32][33][34][35][36]. Based on our previous investigations, the substitution of 10 at.% Co for Fe is helpful to increase the magnetostrictive response of RFe 2 compounds [5,37,38].…”

Section: Giant Magnetostrictive Materials Designmentioning

confidence: 99%

Ultrasensitive magnetostrictive responses at the pre-transitional rhombohedral side of ferromagnetic morphotropic phase boundary

Zhang

Cheng

et al. 2020

J Mater Sci

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The morphotropic phase boundary (MPB) has been utilized extensively in ferroelectrics and recently been extended to ferromagnets, especially for the magnetostrictive materials. Here, guided by phenomenological theories and phase-field simulations, we proposed a design strategy for obtaining the ultrasensitive magnetoelastic response at the pre-transitional rhombohedral side of ferromagnetic MPB, by further flattening the energy landscape while maintaining large intrinsic magnetostriction. To validate this, we judiciously introduced the light-rare-earth-based Tb 0:1 Pr 0:9 system to the Co-doped Tb 0:27 Dy 0:73 Fe 2 alloy, as Tb 0:1 Pr 0:9 is an anisotropy compensation system with large intrinsic strains and the transition metal dopant of Co tends to optimize the magnetostriction. Phase-field modeling was used to determine the detailed magnetic domain evolution of the investigated multi-component Laves phase compounds, the results of which were compared with experimental results. At room temperature, an ultrahigh magnetoelastic response d 33 was found in Tb 0:253 Dy 0:657 Pr 0:09 ðFe 0:9 Co 0:1 Þ 2 recompensation system especially at low fields, which is superior to that of the commercial Tb 0:27 Dy 0:73 Fe 2 (Terfenol-D) polycrystal. The ultrahigh magnetostrictive sensitivity, together with low raw material cost makes it one of the strongest candidates for magnetostriction applications.

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“…[13][14][15][16] In addition, it was found that a small amount of Co substitution for Fe is helpful to increase k 100 of RFe 2 compound due to its tetragonal distortion of crystal structure but harmful to total magnetostriction in the case of excess Co-doped. [17][18][19][20] Based on our previous investigation on Nd(Fe 1Àx Co x ) 1.9 alloys, the substitution of 10 at. % Co for Fe is helpful to increase the magnetostriction of NdFe 1.9 .…”

Section: Introductionmentioning

confidence: 99%

Optimization on magnetic transitions and magnetostriction in TbxDyyNdz(Fe0.9Co0.1)1.93 compounds

Shi

et al. 2013

Journal of Applied Physics

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The structure, magnetic transitions, and magnetostriction of Tb x Dy y Nd z (Fe 0.9 Co 0.1 ) 1.93 polycrystalline compounds have been investigated, with the ratio of x, y, and z spanning the line of minimum magnetic anisotropy. Anisotropy compensation with lower Tb content was realized in Tb 0.253 Dy 0.657 Nd 0.09 (Fe 0.9 Co 0.1 ) 1.93 compound. The spin configuration diagram accompanied with different crystal structures was constructed to illustrate the arrangement for the easy magnetization direction and crystal structure. An optimized effect on magnetostriction especially at the relatively low field of 1 kOe (197 ppm) was observed in Tb 0.253 Dy 0.657 Nd 0.09 (Fe 0.9 Co 0.1 ) 1.93 compound, which is about two times larger than that of the sample free of Nd (62 ppm). Meanwhile, the polycrystalline saturation magnetostriction (k s ¼ 945 ppm) of Tb 0.253 Dy 0.657 Nd 0.09 (Fe 0.9 Co 0.1 ) 1.93 is even much larger than that of the Ho-doped multicomponent single crystal compound Tb 0.2 Dy 0.22 Ho 0.58 Fe 2 (k s ¼ 530 ppm). Low content of heavy rare earth Tb, high Curie temperature, and large ratio between magnetostriction and the absolute value of the first anisotropy constant k a /jK 1 j were obtained in Tb 0.253 Dy 0.657 Nd 0.09 (Fe 0.9 Co 0.1 ) 1.93 compound, which may make it a potential material for magnetostrictive application. V C 2013 AIP Publishing LLC. [http://dx.

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Magnetoelastic properties of Gd(Fe1−xCox)2 and Dy(Fe1−xCox)2

Cited by 5 publications

References 7 publications

Room-temperature ultrasensitive magnetoelastic responses near the magnetic-ordering tricritical region

Room-temperature ultrasensitive magnetoelastic responses near the magnetic-ordering tricritical region

Ultrasensitive magnetostrictive responses at the pre-transitional rhombohedral side of ferromagnetic morphotropic phase boundary

Optimization on magnetic transitions and magnetostriction in TbxDyyNdz(Fe0.9Co0.1)1.93 compounds

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