Magnetostrictive Rare Earth-Fe2 Compounds

Clark, A. E.

doi:10.1007/978-3-642-73263-8_6

Cited by 69 publications

(40 citation statements)

References 62 publications

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“…By alloying Tb and Dy with Fe such that the compound TbxDy 1-xFe2 (x._0. 3) forms, high strains at a low field are possible from the low anisotropy energy, which maximizes domain wall mobility and easy domain rotation at low fields (3). Figure 1 shows the dependence of the 2L111magnetostriction on the Tb:Dy ratio; note that at x=0.75, the magnetostriction changes axes to the < 100> crystallographic direction for DyFe2 alloys.…”

Section: Introductionmentioning

confidence: 99%

Terfenol: A study of the phase equilibrium diagram and the solidification process

Anderson

1993

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Section: Introductionmentioning

confidence: 99%

Terfenol: A study of the phase equilibrium diagram and the solidification process

Anderson

1993

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“…This is known as the "three parameter method" (Clark 1980). A comparison of these methods along with a calculation based on a plane wave model is found in the references (Reed, Greenough et al 1994;Reed 1994).…”

Section: Magnetomechanical Couplingmentioning

confidence: 99%

“…Work continued with magnetostrictives, including nickel and permalloy, into the 20th century, resulting in an early magnetostrictive telephone, magnetostrictive oscillators, torquemeters, and sonar (Hunt 1953). However, it was not until the discovery of "giant" magnetostrictive alloys by the Naval Ordinance Laboratory in the 1960s (Clark 1980) that magnetostrictive materials became a contending transducer technology. Many uses for magnetostrictive actuators, sensors, and dampers have surfaced in the last two decades as more reliable and larger strain and force giant magnetostrictive materials such as Terfenol-D have become commercially available.…”

Section: Magnetostriction Overviewmentioning

confidence: 99%

“…Further details can be found in the references (Lee 1955;Cullity 1972;Clark 1980;Jiles 1991;Lacheisserie 1993). The saturation magnetostriction for Terfenol-D is generally approximated as 996 although it is a function of operating conditions, in particular mechanical prestress.…”

Section: Saturation Magnetostrictionmentioning

confidence: 99%

“…Many anhysteretic models have been forwarded for ferromagnetic materials, including the isotropic Langevin function, higher order Langevin functions, and anisotropic models (Ramesh et al 1996). For giant magnetostrictive material, such as Terfenol-D, under a sufficient compressive stress, the primary magnetization mechanism is thought to be domain magnetization rotation (Clark 1980;JUes 1995).…”

Section: Anhysteretic Magnetizationmentioning

confidence: 99%

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Design, analysis, and modeling of giant magnetostrictuve transducers

Calkins

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This manusciipt has been rqjroduced from the microfilm master. UMI films the text directfy from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of conqmter printer.Hie qnali^ of this leprodvction is dq)endait npon the qnali^ of the copy sabmitted. Broken or indistinct print, colored or poor quality illustrations and photogr^hs, print bleedthrough, substandard marginc^ and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be rraioved, a note win indicate the deletion.Oversize materials (e.g., nu^ drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and contimiing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photogr^hs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photogr^hs or illustrations appearing in this copy for an additional charge. Contact UMI directfy to order. Terfenol-D exhibits giant magnetostriction which has significant converse effects. A Bell & Howell informationTherefore, at the same time that the magnetization of the material changes its shape, a su«ss on the material changes its magnetization. This converse effect explains, in part, the influence of stress on performance and opens the door to applications of sensing, passive damping, and electrical energy generation.This complicated nature has often led to frustration and skepticism on the part of the engineer and technologist interested in applications, prompting talk of the "tricky",

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Magnetostrictive Devices

Dapino

Deng

Calkins

et al. 2016

Wiley Encyclopedia of Electrical and Electronics Engineering

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Magnetostrictive materials exhibit coupling between magnetic and mechanical energies. This bidirectional energy exchange can be employed for actuation, sensing, and energy harvesting. All ferromagnetic materials exhibit the magnetostrictive effect, but only certain iron–rare earth alloys, iron–gallium alloys, amorphous metals, and iron‐ aluminum alloys exhibit sufficiently high magnetostriction for commercial use. Because the magnetostrictive effect is an intrinsic material property that is robust against external factors such as stress and cyclic fatigue, magnetostrictive devices are suitable for harsh environments. This article provides an overview ofmagnetostrictivematerials and devices, particularly focused on Metglas, Terfenol‐D, and Galfenol. Various transducer topologies are presented and discussed, along with quantification of performance metrics and experimental aspects related to understanding and harnessing the intrinsic nonlinearities of magnetostrictive materials. Selected modeling approaches considering both constitutive material behavior and system response are presented.

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Magnetostrictive Rare Earth-Fe2 Compounds

Cited by 69 publications

References 62 publications

Terfenol: A study of the phase equilibrium diagram and the solidification process

Terfenol: A study of the phase equilibrium diagram and the solidification process

Design, analysis, and modeling of giant magnetostrictuve transducers

Magnetostrictive Devices

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