Spin-glass behavior in iron-aluminum alloys: A microscopic model

Shukla, Prabodh; Wortis, Michael

doi:10.1103/physrevb.21.159

Cited by 92 publications

(42 citation statements)

References 23 publications

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“…% Al. 15 In addition, Fe-Al alloys respond to thermal treatments differently from Fe-Ga alloys; 14 usually water quenched Fe-Ga ͑Ref. 3͒ and Fe-Ga-C ͑Ref.…”

Section: Discovered Thatmentioning

confidence: 99%

Effect of carbon addition on the single crystalline magnetostriction of Fe-X (X=Al and Ga) alloys

Huang

McQueeney

et al. 2010

Journal of Applied Physics

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The effect of carbon addition on the magnetostriction of Fe-Ga and Fe-Al alloys was investigated and is summarized in this study. It was found that the addition of carbon generally increased the magnetostriction over binary alloys of Fe-Ga and Fe-Al systems. The formation of carbide in the Fe-Ga-C alloys with a composition near D0 3 phase region decreased the magnetostriction drastically. Fe-Al-C and Fe-Ga-C alloys responded differently to thermal treatments; the magnetostriction in the quenched Fe-Al-C alloys is equal to or slightly lower than that of the slow cooled as is observed in binary Fe-Al alloy; in contrast, the magnetostriction is generally higher in quenched Fe-Ga-C alloys than slow cooled condition, consistent with the behavior of binary alloys of Fe-Ga. A significant increase in magnetostriction between 25% and 165% depending on the phase region in Fe-Ga-C alloys by quenching was observed in the A2+D0 3 two-phase region and D0 3 single phase region. KeywordsPhysics and Astronomy, IPRT, alloying additions, aluminium alloys, carbon, gallium alloys, iron alloys, magnetostriction, quenching (thermal) Disciplines Condensed Matter Physics | Metallurgy CommentsThe following article appeared in Journal of Applied Physics 107 (2010) The effect of carbon addition on the magnetostriction of Fe-Ga and Fe-Al alloys was investigated and is summarized in this study. It was found that the addition of carbon generally increased the magnetostriction over binary alloys of Fe-Ga and Fe-Al systems. The formation of carbide in the Fe-Ga-C alloys with a composition near D0 3 phase region decreased the magnetostriction drastically. Fe-Al-C and Fe-Ga-C alloys responded differently to thermal treatments; the magnetostriction in the quenched Fe-Al-C alloys is equal to or slightly lower than that of the slow cooled as is observed in binary Fe-Al alloy; in contrast, the magnetostriction is generally higher in quenched Fe-Ga-C alloys than slow cooled condition, consistent with the behavior of binary alloys of Fe-Ga. A significant increase in magnetostriction between 25% and 165% depending on the phase region in Fe-Ga-C alloys by quenching was observed in the A2 + D0 3 two-phase region and D0 3 single phase region.

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“…% Al. 15 In addition, Fe-Al alloys respond to thermal treatments differently from Fe-Ga alloys; 14 usually water quenched Fe-Ga ͑Ref. 3͒ and Fe-Ga-C ͑Ref.…”

Section: Discovered Thatmentioning

confidence: 99%

Effect of carbon addition on the single crystalline magnetostriction of Fe-X (X=Al and Ga) alloys

Huang

McQueeney

et al. 2010

Journal of Applied Physics

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“…Physique 44 (1983) ; however there is now a qualitative agreement between different studies on the nature of the phases and on the order-disorder transitions in the Fe rich regions of the diagram [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. In fact this diagram is very complex and shows some very unusual features in metallurgical systems [15][16][17].…”

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confidence: 99%

Ordering effects in the Fe-Al system

Kuentzler

1983

J. Phys. France

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“…Further, experimental magnetic phase diagram shows that FeAl near stoichiometry is in a spin-glass phase [5], while in cold worked disordered Fe-Al alloys saturation magnetization persists in both stoichiometric FeAl and Al-rich alloys [4].…”

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confidence: 98%

Mössbauer spectroscopic study of a low temperature magnetic transition in ordered Fe-doped NiAl

Uwakweh

Liu

2007

Hyperfine Interact

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Mössbauer spectroscopic (MS) measurements at ambient and cryogenic temperatures on powdered Fe-doped NiAl materials (Ni-40Al-9Fe and Ni-50Al-9Fe) exhibited paramagnetic behavior down to 17 K, with one Fe-site in the hosts. At 4.2 K, Ni-40Al-9Fe (Al deficient) remained paramagnetic, while Ni-50Al-9Fe (Ni deficient) displayed a magnetic transition, resolved in terms of one Fe environment. The internal magnetic field of the magnetically split site of Ni-50Al-9Fe was 185±8 kOe determined from a field distribution model. This shows that electronic and magnetic interactions in ordered Fedoped NiAl depend on Fe site preference tendencies. The single Fe site observed at 4.2 K for the Ni-deficient alloy shows that its Fe distribution or site occupancy is not random but ordered. The interactions leading to the development of internal magnetic field in the Nideficient ordered alloy is temperature dependent being absent above 17 K based on MS measurements from ambient to 4.2 K.

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Spin-glass behavior in iron-aluminum alloys: A microscopic model

Cited by 92 publications

References 23 publications

Effect of carbon addition on the single crystalline magnetostriction of Fe-X (X=Al and Ga) alloys

Effect of carbon addition on the single crystalline magnetostriction of Fe-X (X=Al and Ga) alloys

Ordering effects in the Fe-Al system

Mössbauer spectroscopic study of a low temperature magnetic transition in ordered Fe-doped NiAl

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