Single-Crystal Magnetic Anisotropy and Magnetostriction Studies in Iron-Base Alloys

Hall, R. C.

doi:10.1063/1.1735741

Cited by 86 publications

(27 citation statements)

References 6 publications

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“…=4.4 × 10 4 J/m 3 ) is close to the reported value of K 1 = 4.2 × 10 4 J/m 3 for bulk Fe 70 Co30 [31], whereas for d = 14.3 nm, K eff (= 1.7 × 10 5 J/m 3 ) is much larger than that for bulk Fe 70 Co 30 . Such a large effective anisotropy can beFig.…”

supporting

confidence: 86%

Preparation and magnetic characteristics of size-monodispersed Fe–Co alloy cluster assemblies

Peng¹,

Chen²,

She³

et al. 2009

Journal of Alloys and Compounds

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supporting

confidence: 86%

Preparation and magnetic characteristics of size-monodispersed Fe–Co alloy cluster assemblies

Peng¹,

Chen²,

She³

et al. 2009

Journal of Alloys and Compounds

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“…5) and V (Ref. 6) is consistent with this view. More recently, in 2000, significantly greater values of k c,2 , up to near 340 Â 10 À 6 (:340 microstrain, referred to as lS in this paper), were reported in Fe alloys containing Ga. 7 Large magnetostriction values for these alloys were not observed in the rhombohedral constant, k e,2 .…”

Section: Introductionsupporting

confidence: 66%

Tetragonal magnetostriction and magnetoelastic coupling in Fe-Al, Fe-Ga, Fe-Ge, Fe-Si, Fe-Ga-Al, and Fe-Ga-Ge alloys

Restorff

Wun‐Fogle

Hathaway

et al. 2012

Journal of Applied Physics

117

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This paper presents a comparative study on the tetragonal magnetostriction constant,λ γ,2 , [ = (3/2)λ 100 ] and magnetoelastic coupling, b 1 , of binary Fe 100-xZ x (0 < x < 35, Z = Al, Ga, Ge, and Si) and ternary Fe-Ga-Al and Fe-Ga-Ge alloys. The quantities are corrected for magnetostrains due to sample geometry (the magnetostrictive form effect). Recently published elastic constant data along with magnetization measurements at both room temperature and 77 K make these corrections possible. The form effect correction lowers the magnetostriction by ∼10 ppm for high-modulus alloys and by as much as 30 ppm for low-modulus alloys. The elastic constants are also used to determine the values of the magnetoelastic coupling constant, b 1 . With the new magnetostriction data on the Fe-Al-Ga alloy, it is possible to show how the double peak magnetostriction feature of the binary Fe-Ga alloy flows into the single peak binary Fe-Al alloy. The corrected magnetostriction and magnetoelastic coupling data for the various alloys are also compared using the electron-per-atom ratio, e/a, as the common variable. The Hume-Rothery rules link thee/a ratio to the regions of phase stability, which appear to be intimately related to the magnetostriction versus the solute concentration curve in these alloys. Using e/a as the abscissa tends to align the peaks in the magnetostriction and magnetoelastic coupling for the Fe-Ga, Fe-Ge, Fe-Al, Fe-Ga-Al, and Fe-Ga-Ge alloys, but not for the Fe-Si alloys for which the larger atomic size difference may play a greater role in phase stabilization. Corrections for the form effect are also presented for the rhombohedral magnetostriction,λ ɛ,2 , and the magnetoelastic coupling, b 2 , of Fe 100-x Ga x (0 < x < 35) alloys.Keywords aluminium alloys, elastic constants, elastic moduli, gallium alloys, germanium alloys, iron alloys, magnetisation, magnetoelastic effects, magnetostriction, silicon alloys Disciplines Condensed Matter Physics | Metallurgy CommentsThe following article is from Journal of Applied Physics 111 (2012) This paper presents a comparative study on the tetragonal magnetostriction constant, k c,2 , [ ¼ (3/2) k 100 ] and magnetoelastic coupling, b 1 , of binary Fe 100-x Z x (0 < x < 35, Z ¼ Al, Ga, Ge, and Si) and ternary Fe-Ga-Al and Fe-Ga-Ge alloys. The quantities are corrected for magnetostrains due to sample geometry (the magnetostrictive form effect). Recently published elastic constant data along with magnetization measurements at both room temperature and 77 K make these corrections possible. The form effect correction lowers the magnetostriction by $10 ppm for high-modulus alloys and by as much as 30 ppm for low-modulus alloys. The elastic constants are also used to determine the values of the magnetoelastic coupling constant, b 1 . With the new magnetostriction data on the Fe-Al-Ga alloy, it is possible to show how the double peak magnetostriction feature of the binary Fe-Ga alloy flows into the single peak binary Fe-Al alloy. The corrected magnetostriction and magnetoel...

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“…Hall has shown that λ 100 of bcc Fe increases moderately with the addition of 2%-4% Mo. 13) Figure 12 …”

Section: Magnetostriction Of Fe-ga-ni and Fe-ga-mo Alloysmentioning

confidence: 99%

Magnetostrictive Properties of Galfenol Alloys Under Compressive Stress

et al. 2002

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Single-Crystal Magnetic Anisotropy and Magnetostriction Studies in Iron-Base Alloys

Cited by 86 publications

References 6 publications

Preparation and magnetic characteristics of size-monodispersed Fe–Co alloy cluster assemblies

Preparation and magnetic characteristics of size-monodispersed Fe–Co alloy cluster assemblies

Tetragonal magnetostriction and magnetoelastic coupling in Fe-Al, Fe-Ga, Fe-Ge, Fe-Si, Fe-Ga-Al, and Fe-Ga-Ge alloys

Magnetostrictive Properties of Galfenol Alloys Under Compressive Stress

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