High magnetostriction in low applied magnetic fields in amorphous Tb-Fe (hard)/Fe-B (soft) multilayers

Prados, C.; Panagiotopoulus, I.; Hadjipanayis, G. C.; Freijo, J. J.; Hernando, A.

doi:10.1109/20.619547

Cited by 19 publications

(8 citation statements)

References 7 publications

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“…The result is consistent with that obtained by Prados et al [7]. In addition, the decrease in coercivity may also be associated with the development of the magnetostriction in the FeCoV layers and the (λ TbFe −λ FeCoV ) factor in Eq.…”

supporting

confidence: 92%

“…The combination of rare earth-transition metal alloys and transition metals in multilayer, e.g., TbFe/Fe, TbFe/FeCo, and TbFeCo/YFeCo, opened an alternative route toward high-performance magnetostrictive materials and new generation of excellent soft magnetic materials. The configurations of multilayers already investigated included [Tb 40 Fe 60 / FeCoBSi] N [6], [Tb 40 Fe 60 /FeB] N [7], [Tb 40 (Fe x Co 1−x ) 60 / Y z (Fe y Co 1−y ) 1−z ] N [8][9], and [TbDyFe/FeSiCuNbB] N [10], where N is the bilayer periodicity, and varies between 1 and 50.…”

Section: Introductionmentioning

confidence: 99%

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Excellent magnetic softness in TbFe/FeCoV multilayers

Feng

Chen

2011

Rare Metals

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Tb 40 Fe 60 (x nm)/Fe 49 Co 49 V 2 (y nm)] N multilayers were prepared by multitarget magnetron sputtering using a rotary turn-table technique in a stop-and-go mode. The multilayers were investigated using X-ray diffraction, field emission scan electron microscopy and vibrating sample magnetometry. The result shows that the coercive field drops abruptly with increasing number of bilayers, and it remains generally stable when the number of bilayers is 10 or higher. An excellent magnetic softness with a coercivity of 1.0 mT is obtained for x = 5 and y = 5 after annealing at 250°C. A crystalline state is observed in FeCoV layers before and after annealing by X-ray diffraction.

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supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Excellent magnetic softness in TbFe/FeCoV multilayers

Feng

Chen

2011

Rare Metals

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“…To develop miniature magnetostrictive actuators, one needs magnetostrictive film with a large magnetostriction. TbFe mono-or multilayers are usually used (Debray et al, 2004;Honda et al, 1994Honda et al, , 1997Lim et al, 1998;Prados et al, 1997;Quandt and Seemann, 1995;Quandt and Ludwig, 1999;Quandt et al, 1997). To miniaturize the actuator, the magnetic field to drive the actuator should be as small as possible.…”

Section: Introductionmentioning

confidence: 99%

Geometric and Mechanical Considerations for the Design of the Magnetostrictive Thin Film Actuators^#

Peng

Zhang

Liao

et al. 2006

Mechanics Based Design of Structures and Machines

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The driving field of the magnetostrictive thin film actuator should be as small as possible in order to develop miniature devices. The aim of this paper is to reduce the driving field by varying the structural and the material parameters of the substrate of the cantilever in the actuator based on the finite element calculation. The influences of the geometric and the material parameters on the reference driving field have been studied. The results show that the reference driving field is sensitive to the length of the cantilever, the thickness of both the magnetostrictive film and the substrate, and also the Young's modulus of the substrate. The length of the cantilever should be long enough. In order to achieve a small driving field, the thickness of both the magnetostrictive film and the substrate should be carefully designed according to the ratio of the Young's modulus of the substrate to that of the film.

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“…The three series of samples have one in common, the heterostructure with the thinnest studied layers (12.5 nm), i.e. [Fe 3 Ga(12.5nm)/TbFe 2 (12.5nm)]i 6 . Hysteresis loops at room temperature were carried out in a vibrating sample magnetometer (VSM).…”

Section: Experimental Techniquesmentioning

confidence: 99%

“…However, its high coercivity of ~4 kOe, is a drawback for industrial applications [2]. Heterostructures comprised ofTbFe 2 and soft magnetic layers such as Ni, Fe, or FeB have already been studied [3][4][5][6]. In these systems, the combination of TbFe2 and low coercivity materials was expected to provide multilayers with a low H c and a noticeably magnetostriction constant.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of nanostructured systems based on TbFe2

Ranchal

Gutiérrez-Díez

González-Martín

2012

Journal of Alloys and Compounds

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The aim of this work is to study the magnetic properties of annealed [Fe 3 Ga/TbFe 2 ] n heterostructures grown by sputtering at room temperature. The interest of investigating multilayers comprised of TbFe2 and Fe3Ga is their complementary properties in terms of coercivity and magnetostriction. We have studied the thickness combination which optimizes the magnetic and magnetostrictive properties of the annealed multilayers.

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High magnetostriction in low applied magnetic fields in amorphous Tb-Fe (hard)/Fe-B (soft) multilayers

Cited by 19 publications

References 7 publications

Excellent magnetic softness in TbFe/FeCoV multilayers

Excellent magnetic softness in TbFe/FeCoV multilayers

Geometric and Mechanical Considerations for the Design of the Magnetostrictive Thin Film Actuators^#

Magnetic properties of nanostructured systems based on TbFe2

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High magnetostriction in low applied magnetic fields in amorphous Tb-Fe (hard)/Fe-B (soft) multilayers

Cited by 19 publications

References 7 publications

Excellent magnetic softness in TbFe/FeCoV multilayers

Excellent magnetic softness in TbFe/FeCoV multilayers

Geometric and Mechanical Considerations for the Design of the Magnetostrictive Thin Film Actuators#

Magnetic properties of nanostructured systems based on TbFe2

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Product

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Geometric and Mechanical Considerations for the Design of the Magnetostrictive Thin Film Actuators^#