Giant magnetoresistance in PtMn alloys

M. J. Carey; A. B. Banful; L. Folks; B. A. Gurney; R. F.C. Farrow; A. J. Kellock

doi:10.1063/1.1712022

Giant magnetoresistance in PtMn alloys

M. J. Carey, A. B. Banful, L. Folks, B. A. Gurney, R. F.C. Farrow, A. J. Kellock

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8 Scopus citations

Abstract

The giant magnetoresistance in PtMn alloys was studied. It was shown that the onset of chemical and magnetic order in PtMn was accompanied by a large increase in the resistivity, ρ, contrary to that observed in nonmagnetic or ferromagnetic disorder-order transitions. It was observed that the characterstics of the resistance change with anneal time in two regimes, with only the second regime involving a disorder/order transition. The change of ρ with time was used to calculate the activation energy for the L1 ₀ transformation in PtMn.

Original language	English (US)
Pages (from-to)	3097-3099
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	16
DOIs	https://doi.org/10.1063/1.1712022
State	Published - Apr 19 2004
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1712022

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abstract = "The giant magnetoresistance in PtMn alloys was studied. It was shown that the onset of chemical and magnetic order in PtMn was accompanied by a large increase in the resistivity, ρ, contrary to that observed in nonmagnetic or ferromagnetic disorder-order transitions. It was observed that the characterstics of the resistance change with anneal time in two regimes, with only the second regime involving a disorder/order transition. The change of ρ with time was used to calculate the activation energy for the L1 0 transformation in PtMn.",

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T1 - Giant magnetoresistance in PtMn alloys

AU - Carey, M. J.

AU - Banful, A. B.

AU - Folks, L.

AU - Gurney, B. A.

AU - Farrow, R. F.C.

AU - Kellock, A. J.

PY - 2004/4/19

Y1 - 2004/4/19

N2 - The giant magnetoresistance in PtMn alloys was studied. It was shown that the onset of chemical and magnetic order in PtMn was accompanied by a large increase in the resistivity, ρ, contrary to that observed in nonmagnetic or ferromagnetic disorder-order transitions. It was observed that the characterstics of the resistance change with anneal time in two regimes, with only the second regime involving a disorder/order transition. The change of ρ with time was used to calculate the activation energy for the L1 0 transformation in PtMn.

AB - The giant magnetoresistance in PtMn alloys was studied. It was shown that the onset of chemical and magnetic order in PtMn was accompanied by a large increase in the resistivity, ρ, contrary to that observed in nonmagnetic or ferromagnetic disorder-order transitions. It was observed that the characterstics of the resistance change with anneal time in two regimes, with only the second regime involving a disorder/order transition. The change of ρ with time was used to calculate the activation energy for the L1 0 transformation in PtMn.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Giant magnetoresistance in PtMn alloys

Abstract

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