Forced magnetostriction and its temperature-dependence of binary alloys between iron, cobalt and nickel

Stoelinga, J.H.M.; Gersdorf, R.; Vries, G. de

doi:10.1016/0031-8914(65)90040-6

Cited by 41 publications

(4 citation statements)

References 21 publications

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“…Another route in magnetostriction investigations was the study of binary, iron-based alloys, such as NiFe, SiFe, and CoFe [24,25], which evolved until the development of specific Iron-Gallium and Iron-Aluminum binary alloys (known as Galfenol and Alfenol, respectively) with noticeable magnetostrictive coupling (≈300 ppm for Galfenol) and improved mechanical properties that allowed a better workability and strength [26,27], with respect to Terfenol-D and similar rare earth-based compounds. While in principle, all of them are suitable for actuation or sensing scopes, Terfenol was mostly employed for actuation in rod or prismatic geometries, due to its very large deformations and forces and limited workability and brittleness [28].…”

Section: Effect: Joule (Direct) Villari (Inverse) Wiedemann Matteuccimentioning

confidence: 99%

Review of Modeling and Control of Magnetostrictive Actuators

et al. 2019

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Magnetostrictive actuators play an important role in the perception of usefulness of smart materials and devices. Their applications are potentially wider than that of piezoelectric actuators because of the higher energy density and intrinsic robustness. However, the non-negligible hysteresis and complexity of their characteristics make the design and control quite difficult and has limited their diffusion in industrial applications. Nevertheless, the scientific literature presents a wide offer of results in design and geometries, modeling and control that may be exploited for applications. This paper gives a reasoned review of the main results achieved in the literature about design, modeling and control of magnetostrictive actuators exploiting the direct effects of magnetostriction (Joule and Wiedemann). Some perspectives and challenges about magnetostrictive actuators development are also gathered.

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Section: Effect: Joule (Direct) Villari (Inverse) Wiedemann Matteuccimentioning

confidence: 99%

Review of Modeling and Control of Magnetostrictive Actuators

et al. 2019

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“…Assuming that the orbital moment does not cause a volume change, we can estimate κC band from eq. (16) by using the observed value of dω/dH=5xl0 -10 /Oe at 4.2 K 20) as κC band =0.7x10 -8 cm 6 /emu 2 . At room temperature, χ hf increases almost twice.…”

Section: Local Moment Limitmentioning

confidence: 99%

“…On the contrary, dω/dH does not change within the experimental accuracy. 20) This means that the contribution of the interaction term to volume change should be very small, that is C band >> C int . It is an interesting problem to analyze the spontaneous volume magnetostriction.…”

Section: Local Moment Limitmentioning

confidence: 99%

Magnetovolume Effects in Ferromagnetic Transition Metals

Shiga

1981

J. Phys. Soc. Jpn.

112

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Magnetovolume effects in ferromagnetic transition metals and alloys, such as the spontaneous volume magnetostriction, the forced volume magnetostriction, are described by a phenomenological theory based upon a fluctuating local band picture, in which both itinerant electron and local moment characters are taken into account. The magnetovolume effects of Fe, Ni and the Fe-Ni Invar alloy are analyzed on the basis of the proposed theory. It has been shown that the degree of shrinkage of local moments above the Curie temperature can be estimated from this analysis. It is concluded that local moments remain almost unchanged in bcc Fe and, on the contrary, they shrink markedly in the Invar alloy.

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“…On the other hand, dw/dH does not change with temperature within the experimental accuracy. 9 > This means that k' is negligibly small from Eq. (3).…”

Section: Bee Ironmentioning

confidence: 99%

Magnetovolume Effects in Strongly and Intermediately Correlated Elecron Systems

Shiga

1990

Prog. Theor. Phys. Suppl.

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Analyses of magnetovolume effects such as the forced volume magnetostriction and the thermal expansion anomaly can give estimation of local amplitude of spin fluctuations. We have shown that bee Fe has a rigid magnetic moment and that the magnetic moment of Invar type alloys is rather soft. It is pointed out that the total energy difference between the magnetized state and the nonmagnetic state obtained by self-consistent energy band calculations using a local-spin-density approximation is much higher than the Curie temperature for rigid spin systems and comparable for soft spin systems. The effects of zero point spin fluctuations observed in the YMn2 system are discussed. § 1. Introduction

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Forced magnetostriction and its temperature-dependence of binary alloys between iron, cobalt and nickel

Cited by 41 publications

References 21 publications

Review of Modeling and Control of Magnetostrictive Actuators

Review of Modeling and Control of Magnetostrictive Actuators

Magnetovolume Effects in Ferromagnetic Transition Metals

Magnetovolume Effects in Strongly and Intermediately Correlated Elecron Systems

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