High strain-rate magnetoelasticity in Galfenol

Domann, John P.; Loeffler, Colin; Martin, Brad; Carman, Greg P.

doi:10.1063/1.4930891

Cited by 14 publications

(6 citation statements)

References 52 publications

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“…Magneto-elasticity occurs in Galfenol, which is an alloy consisting of iron doped with the metal gallium. Doumann et al have observed that Galfenol is able to turn up to 70% of mechanical energy into magnetic energy [81]. The findings might enable, for example, the development of novel type of collision detectors for vehicle applications.…”

Section: Harvesting Of Kinetic Energymentioning

confidence: 99%

An overview of the concept and technology of ubiquitous energy

Alanne

Cao

2019

Applied Energy

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The continuous and rapid development of energy technology challenges the scientific community to ponder the long-term energy evolution from the perspective of sustainable energy transition.We state that one of the key challenges for the new (post-fossil) energy era is to guarantee to all energy users an access to adequate resources of energy everywhere and at any moment of time.To crystallize the key ideas of such a pervasive energy supply chain into a single concept, we introduce the concept 'ubiquitous energy'. The main contribution of our paper is to create a discussion framework for the concept and to identify the most relevant technology pathways for the realization of 'ubiquitous energy'. Hence, we first present the background of the concept and discuss matters concerning the 'quality of energy to be present everywhere'. Secondly, we review the latest innovations in energy technology with respect to the energy supply chain and summarize technology pathways to 'ubiquitous energy'. To that end, we describe a systematic framework to classify energy technologies under energy generation, storage, transmission and distribution. We conclude that 'ubiquitous energy' covers various solutions in both scope and degree of integration, but the most prominent trend of development is the use of distributed and shared resources and local energy supply chains. Here, the research should focus on integrated and mobile energy conversion and storage options and wireless power transmission.

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Section: Harvesting Of Kinetic Energymentioning

confidence: 99%

An overview of the concept and technology of ubiquitous energy

Alanne

Cao

2019

Applied Energy

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“…Fe–Ga alloy (galfenol) is an attractive magnetostrictive material for energy-harvesting devices, sensors and actuators. It has good properties, such as a very large magnetostriction coefficient, and excellent mechanical properties [ 1 , 2 , 3 , 4 , 5 , 6 ]. The alloy exhibits significant magnetocrystalline anisotropy and high electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Rapid Secondary Recrystallization of the Goss Texture in Fe81Ga19 Sheets Using Nanosized NbC Particles

Fan

Yang

et al. 2021

Materials

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Herein, a simple and efficient method is proposed for fabricating Fe81Ga19 alloy thin sheets with a high magnetostriction coefficient. Sharp Goss texture ({110}<001>) was successfully produced in the sheets by rapid secondary recrystallization induced by nanosized NbC particles at low temperatures. Numerous NbC precipitates (size ~90 nm) were obtained after hot rolling, intermediate annealing, and primary recrystallization annealing. The relatively higher quantity of nanosized NbC precipitates with 0.22 mol% resulted in finer and uniform grains (~10 μm) through thickness after primary recrystallization annealing. There was a slow coarsening of the NbC precipitates, from 104 nm to 130 nm, as the temperature rose from 850 °C to 900 °C in a pure nitrogen atmosphere, as well as a primary recrystallization textured by strong γ fibers with a peak at {111} <112> favoring the development of secondary recrystallization of Goss texture at a temperature of 850 °C. Matching of the appropriate inhibitor characteristics and primary recrystallization texture guaranteed rapid secondary recrystallization at temperatures lower than 950 °C. A high magnetostriction coefficient of 304 ppm was achieved for the Fe81Ga19 sheet after rapid secondary recrystallization.

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“…Subsequently, the emphasis shifted to a full description of the solid-state system and the study of related subsystems [4][5][6][7][8][9][10][11][12] . The variety of interactions between these two subsystems creates a wide range of applications 13 exploiting the fact that in magnetostrictive materials the mechanical stress affects the magnetization orientation and vice versa [14][15][16][17][18][19][20][21] . For instance, the mechanical stress produced by an acoustic wave can drive magnetization dynamics and excite magnons in such materials if the frequency of lattice vibrations matches the eigenexcitations of the spin system 22,23 .…”

Section: Introductionmentioning

confidence: 99%

Double accumulation and anisotropic transport of magneto-elastic bosons in yttrium iron garnet films

Frey,

Bozhko,

L'vov

et al. 2021

Preprint

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Interaction between quasiparticles of a different nature, such as magnons and phonons in a magnetic medium, leads to the mixing of their properties and the formation of hybrid states in the areas of intersection of individual spectral branches. We recently reported the discovery of a new phenomenon mediated by the magnon-phonon interaction: the spontaneous bottleneck accumulation of magneto-elastic bosons under electromagnetic pumping of pure magnons into a ferrimagnetic yttrium iron garnet film. Here, by studying the transport properties of the accumulated magneto-elastic bosons, we reveal that such accumulation occurs in two frequency-distant groups of quasiparticles: quasi-phonons and quasi-magnons. They propagate with different speeds in different directions relative to the magnetization field. The theoretical model we propose qualitatively describes the double accumulation effect, and the analysis of the two-dimensional spectrum of quasiparticles in the hybridization region allows us to determine the wavevectors and frequencies of each of the groups.

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High strain-rate magnetoelasticity in Galfenol

Cited by 14 publications

References 52 publications

An overview of the concept and technology of ubiquitous energy

An overview of the concept and technology of ubiquitous energy

Rapid Secondary Recrystallization of the Goss Texture in Fe81Ga19 Sheets Using Nanosized NbC Particles

Double accumulation and anisotropic transport of magneto-elastic bosons in yttrium iron garnet films

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