Magnetostrictive properties of FeAl/polyester and FeAl/silicone composites

Riesgo, G.; Carrizo, J.; Elbaile, L.; Crespo, R.D.; Sepúlveda, R.; Garcı́a, J.A.

doi:10.1016/j.mseb.2016.11.004

Cited by 8 publications

(5 citation statements)

References 35 publications

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“…[29] The influence of Ho-doping and annealing on the magnetostriction of Tb-Dy-Ho-Fe/epoxy composites was investigated. Riesgo et al [32] studied magnetostriction in composites consisting of Fe 81 Al 19 powder particles randomly distributed in polyester and silicone matrixes. A method of producing magnetostrictive composites containing powdered Terfenol-D (70% volume fraction) and epoxy resin was developed, [31] and the magnetostriction was 720 ppm for a prestress of 7 MPa.…”

Section: Magnetostrictive Materialsmentioning

confidence: 99%

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

2017

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In the coming era of the internet of things (IoT), wireless sensor networks that monitor, detect, and gather data will play a crucial role in advancements in public safety, human healthcare, industrial automation, and energy management. Batteries are currently the power source of choice for operating wireless network devices due to their ease of installation; however, they require periodic replacement due to capacity limitations. Within the scope of the IoT, battery maintenance of the trillion sensor nodes that may be implemented will be practically infeasible from environmental, resource, and labor cost perspectives. In considering individual self-powered sensor nodes, the idea of harvesting energy from ambient vibrations, heat, and electromagnetic waves has recently triggered noticeable research interest in the academic community. This paper gives an overview of energy harvesting materials and systems. Three main categories are presented: piezoelectric ceramics/polymers, magnetostrictive alloys, and magnetoelectric (ME) multiferroic composites. State-of-the-art harvesting materials and structures are presented with a focus on characterization, fabrication, modeling and simulation, and durability and reliability. Some perspectives and challenges for the future development of energy harvesting materials are also highlighted.

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Section: Magnetostrictive Materialsmentioning

confidence: 99%

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

2017

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“…These composites used to be made with iron particles of nano or micro sizes dispersed in a silicon polymer matrix [4][5][6][7]; however, recently other matrices: polymers, polyester, rubbers, thermoplastic elastomers, etc. and particles: ferrites (of barium, cobalt, iron and strontium), alloys of FeAl, and FaGa, etc., are being used [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Villari Effect at Low Strain in Magnetoactive Materials

Riesgo¹,

Elbaile

Carrizo

et al. 2020

Materials

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Magnetic composites of soft magnetic FeGa particles embedded in a silicone matrix have been synthesized. The Villari effect has been studied depending on the size and concentration of the particles and on the magnetic state of the composite. The results indicate a decrease in the Villari effect when the concentration of the magnetic particles increases. These results suggest a relationship between the Villari effect and the mechanical properties of the composites. The Young’s modulus of the composites has been obtained by microindentation and their values related to the intensity and slope of the Villari signals. The results are explained on the basis that the reduction in the cross section of the composite when submitted to stress is the main origin of the variation of the magnetic flux in the Villari effect in this kind of composite. It has also been obtained that the magnetic state of the composite plays an important role in the Villari signal. When the magnetization of the composite is greater, the magnetic flux across the composite is greater too and, so, the same reduction in the cross section originates a greater Villari signal.

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“…Another relevant characteristic of the MR elastomers is their high magnetostriction [19][20][21][22][23] that makes them excellent candidates to be used in stress and force sensors.…”

Section: Introductionmentioning

confidence: 99%

Villari effect in silicone/FeGa composites

et al. 2019

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This paper presents the results of the Villari effect study in FeGa magnetorheological composites with very low stresses. The composites consist of a silicone matrix and Fe75Ga25 powder of size ranging from 50 to 100 µm. Two types of composites, one is with 45 wt% and the other one with 30 wt% of Fe75Ga25 powder have been manufactured. The Villari effect has been measured in both samples as-manufactured and in those in which a 1 T magnetic field has been applied after curing. The results indicate that the composites with an applied field of 1 T after curing show the greatest Villari signal even without any applied magnetic field. This fact allows a design of a low-cost force sensor and high performance. A simple model, based on the change in the cross-section of the composite, has been developed to explain the results obtained.

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Magnetostrictive properties of FeAl/polyester and FeAl/silicone composites

Cited by 8 publications

References 35 publications

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

Villari Effect at Low Strain in Magnetoactive Materials

Villari effect in silicone/FeGa composites

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