Journal ArticleDOI
Giant enhancement in the magnetostrictive effect of FeGa alloys doped with low levels of terbium
Liping Jiang,Jiandong Yang,Hongbo Hao,Guangrui Zhang,Shuangxia Wu,Yajie Chen,O. Obi,Trifon Fitchorov,Vincent G. Harris +8 more
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TLDR
In this paper, the effects of terbium additives on the microstructure and magnetic properties of Fe83Ga17Tbx alloys (x = 0, 0.2, 0., 0.4, 0, 6, and 0.8) were investigated.Abstract:
We present the effects of terbium additives upon the microstructure and magnetic properties of Fe83Ga17Tbx alloys (x = 0, 0.2, 0.4, 0.6, and 0.8), prepared by vacuum electric arc-melting and directional solidification techniques. Experiments indicate that small amounts of terbium more than double the saturation magnetostriction of a [110] textured Fe83Ga17 alloy with λ = 72 × 10−6 and lower the magnetostriction saturation field. The pronounced increase in magnetostriction stems from the appearance of [100] texture in polycrystalline alloys. It is verified that [110] and [100] textures are enhanced by the introduction of terbium atoms preferentially residing in a Tb-rich intergranular phase.read more
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Giant heterogeneous magnetostriction in Fe–Ga alloys: Effect of trace element doping
Yangkun He,Chengbao Jiang,Wei Wu,Bin Wang,Huiping Duan,Hui Wang,Tianli Zhang,Jingmin Wang,Jinghua Liu,Zaoli Zhang,Plamen Stamenov,J. M. D. Coey,J. M. D. Coey,Huibin Xu +13 more
TL;DR: In this paper, it was shown that melt-spun, (001) textured Fe83Ga17 ribbons contain 3-nm inclusions with c-axis Ga-Ga pairs aligned in a tetragonal L60-type structure; the induced tetragonality of the entire A2 matrix is observed directly by synchrotron X-ray diffraction.
Journal ArticleDOI
Interaction of Trace Rare‐Earth Dopants and Nanoheterogeneities Induces Giant Magnetostriction in Fe‐Ga Alloys
Yangkun He,Xiaoqin Ke,Chengbao Jiang,Naihua Miao,Hui Wang,J. M. D. Coey,J. M. D. Coey,Yunzhi Wang,Yunzhi Wang,Huibin Xu +9 more
Journal ArticleDOI
Thermally driven large magnetoresistance and magnetostriction in multifunctional magnetic FeGa–Tb alloys
Trifon Fitchorov,Steven Bennett,Liping Jiang,Guangrui Zhang,Zengqi Zhao,Yajie Chen,Vincent G. Harris +6 more
TL;DR: The temperature stability of Fe81Ga19Tbx (x = 0.3) and Fe81Galfenol (i.e. Galfenols) alloys is investigated over a temperature range from 10 to 1000 K as discussed by the authors.
Journal ArticleDOI
Influence of Tb on structure and properties of Fe-19%Ga and Fe-27%Ga alloys
Igor S. Golovin,А.M. Balagurov,V.V. Palacheva,A. Emdadi,Ivan A. Bobrikov,A. Yu. Churyumov,Vladimir Cheverikin,A. V. Pozdniakov,Anastasia V. Mikhaylovskaya,S. A. Golovin +9 more
TL;DR: In this paper, the influence of microalloying by Tb on structure and some properties of Fe-19%Ga and Fe-27%Ga type alloys was studied and it was shown that the addition of Tb stabilize bcc-born phases (A2, B2 and D0 3 ) and prevent the appearance of closed packed (fcc ordered L1 2 and hcp ordered D0 19 ) phases.
Journal ArticleDOI
Textured, dense and giant magnetostrictive alloy from fissile polycrystal
Yuan-Yuan Gong,Dunhui Wang,Qingqi Cao,Youwei Du,Ting Zhi,Bangchuan Zhao,Jianming Dai,Yuping Sun,Yuping Sun,Haibiao Zhou,Qingyou Lu,Qingyou Lu,Jian Liu +12 more
TL;DR: In this paper, the authors demonstrate that textured and dense MnCoSi1−x alloys are obtained, which exhibit giant magnetostriction and enhanced manufacturing performance by introducing vacancies of Si element.
References
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Journal ArticleDOI
Extraordinary magnetoelasticity and lattice softening in bcc Fe-Ga alloys
Arthur E. Clark,K. B. Hathaway,Marilyn Wun-Fogle,J. B. Restorff,Thomas A. Lograsso,V. Keppens,Gabriela Petculescu,Richard Andrew Taylor +7 more
TL;DR: In this article, a single maximum in the magnetoelastic coupling |b1| of Fe with increasing amounts of nonmagnetic Ga, combined with a strongly temperature dependent elastic shear modulus (c11−c12) is interpreted as anomalous magnetostrictive behavior in Fe-Ga alloys.
Journal ArticleDOI
A review of magnetostrictive iron-gallium alloys
TL;DR: In this paper, the authors present a review of the characterization and processing of FeGa alloys and the state-of-the-art in modeling their actuation and sensing behavior.
Journal ArticleDOI
Phase equilibria and stability of ordered b.c.c. phases in the Fe-rich portion of the Fe–Ga system
TL;DR: In this paper, phase equilibria among the A2, B2, D03, L12 and D019 phases were determined by transmission and scanning electron microscopies (TEM and SEM) and energy dispersion spectroscopy (EDS), mainly using a conventional diffusion couple (DC) technique.
Journal ArticleDOI
Large magnetostriction in directionally solidified FeGa and FeGaAl alloys
TL;DR: In this paper, the effect of partial substitution of Ga with Al on the magnetostriction of the disordered bcc phase of Fe was examined, for alloys processed under different directional solidification conditions.
Proceedings ArticleDOI
Magnetic and mechanical properties of polycrystalline Galfenol
TL;DR: The Zone Melt Crystal Growth Method (FSZM) has been used to produce polycrystalline Galfenol specimens, Fe 81.6 Ga 18.4, with preferred {100} orientation.