Magnetic and transport properties of Co2MnSnxSb1−x Heusler alloys

Magnetic and transport properties of Co2MnSnxSb1−x Heusler alloys

We present the magnetic, structural, and transport properties of the quaternary Heusler alloys Co2MnSnxSb1−x (x=0, 0.25, 0.50, 0.75, and 1.0), which have been theoretically predicted to be half-metallic. Magnetization measurements as a function of applied field show that the saturation moment for x=...

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Veröffentlicht in:Journal of applied physics 2009-01, Vol.105 (1)
Hauptverfasser: Paudel, Moti R., Wolfe, Christopher S., Patton, Heather, Dubenko, Igor, Ali, Naushad, Christodoulides, Joseph A., Stadler, Shane
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container_title Journal of applied physics
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creator Paudel, Moti R.
Wolfe, Christopher S.
Patton, Heather
Dubenko, Igor
Ali, Naushad
Christodoulides, Joseph A.
Stadler, Shane
description We present the magnetic, structural, and transport properties of the quaternary Heusler alloys Co2MnSnxSb1−x (x=0, 0.25, 0.50, 0.75, and 1.0), which have been theoretically predicted to be half-metallic. Magnetization measurements as a function of applied field show that the saturation moment for x=1 (Co2MnSn) is near the Slater–Pauling value of 5μB; however, the moment for x=0 (Co2MnSb) falls far short of its predicted value of 6μB. Resistivity as a function of temperature was measured from 5 to 400 K, and a phase transition from a half-metallic ferromagnetic phase to a normal ferromagnetic phase was observed between 50 and 80 K for all of the alloys. At low temperature (10 K
doi_str_mv 10.1063/1.3054291
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Magnetization measurements as a function of applied field show that the saturation moment for x=1 (Co2MnSn) is near the Slater–Pauling value of 5μB; however, the moment for x=0 (Co2MnSb) falls far short of its predicted value of 6μB. Resistivity as a function of temperature was measured from 5 to 400 K, and a phase transition from a half-metallic ferromagnetic phase to a normal ferromagnetic phase was observed between 50 and 80 K for all of the alloys. At low temperature (10 K&lt;T&lt;40 K), the resistivity ratio was found to vary as R(T)/R(T=5 K)=A+BT2+CT9/2, where the T2 term results from electron-electron scattering, whereas the T9/2 term is a consequence of double magnon scattering.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.3054291</identifier><language>eng</language><ispartof>Journal of applied physics, 2009-01, Vol.105 (1)</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c194t-4d67bd929b2a0b0aefaafb120a8863ce07841c86b8653f70bd5e21a36bfa75743</citedby><cites>FETCH-LOGICAL-c194t-4d67bd929b2a0b0aefaafb120a8863ce07841c86b8653f70bd5e21a36bfa75743</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids></links><search><creatorcontrib>Paudel, Moti R.</creatorcontrib><creatorcontrib>Wolfe, Christopher S.</creatorcontrib><creatorcontrib>Patton, Heather</creatorcontrib><creatorcontrib>Dubenko, Igor</creatorcontrib><creatorcontrib>Ali, Naushad</creatorcontrib><creatorcontrib>Christodoulides, Joseph A.</creatorcontrib><creatorcontrib>Stadler, Shane</creatorcontrib><title>Magnetic and transport properties of Co2MnSnxSb1−x Heusler alloys</title><title>Journal of applied physics</title><description>We present the magnetic, structural, and transport properties of the quaternary Heusler alloys Co2MnSnxSb1−x (x=0, 0.25, 0.50, 0.75, and 1.0), which have been theoretically predicted to be half-metallic. 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title Magnetic and transport properties of Co2MnSnxSb1−x Heusler alloys
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