Giant magnetoresistance in heterogeneous Cu-Co and Ag-Co alloy films (invited)

A. E. Berkowitz; J. R. Mitchell; M. J. Carey; A. P. Young; D. Rao; A. Starr; S. Zhang; F. E. Spada; F. T. Parker; A. Hutten; G. Thomas

doi:10.1063/1.353767

Giant magnetoresistance in heterogeneous Cu-Co and Ag-Co alloy films (invited)

A. E. Berkowitz, J. R. Mitchell, M. J. Carey, A. P. Young, D. Rao, A. Starr, S. Zhang, F. E. Spada, F. T. Parker, A. Hutten, G. Thomas

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

Giant magnetoresistance in sputtered single films of Cu-Co and Ag-Co heterogeneous alloys is discussed. The films consist of Co-rich precipitates in a nonferromagnetic matrix. The Ag-Co films have higher Δρ/ρ and Δρ values than the Cu-Co films, possibly due to less Co dissolved in the Ag matrix. Δρ scales inversely with precipitate particle size, implying that Co-rich clusters ≤20 Å diameter may be most effective for spin dependent scattering. This trend of the data and a phenomenological model suggest that interfacial spin dependent scattering is significantly stronger than the scattering within the Co-rich particles.

Original language	English (US)
Pages (from-to)	5320-5325
Number of pages	6
Journal	Journal of Applied Physics
Volume	73
Issue number	10
DOIs	https://doi.org/10.1063/1.353767
State	Published - 1993
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Giant magnetoresistance in heterogeneous Cu-Co and Ag-Co alloy films (invited)",

abstract = "Giant magnetoresistance in sputtered single films of Cu-Co and Ag-Co heterogeneous alloys is discussed. The films consist of Co-rich precipitates in a nonferromagnetic matrix. The Ag-Co films have higher Δρ/ρ and Δρ values than the Cu-Co films, possibly due to less Co dissolved in the Ag matrix. Δρ scales inversely with precipitate particle size, implying that Co-rich clusters ≤20 {\AA} diameter may be most effective for spin dependent scattering. This trend of the data and a phenomenological model suggest that interfacial spin dependent scattering is significantly stronger than the scattering within the Co-rich particles.",

author = "Berkowitz, {A. E.} and Mitchell, {J. R.} and Carey, {M. J.} and Young, {A. P.} and D. Rao and A. Starr and S. Zhang and Spada, {F. E.} and Parker, {F. T.} and A. Hutten and G. Thomas",

year = "1993",

doi = "10.1063/1.353767",

language = "English (US)",

volume = "73",

pages = "5320--5325",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Giant magnetoresistance in heterogeneous Cu-Co and Ag-Co alloy films (invited)

AU - Berkowitz, A. E.

AU - Mitchell, J. R.

AU - Carey, M. J.

AU - Young, A. P.

AU - Rao, D.

AU - Starr, A.

AU - Zhang, S.

AU - Spada, F. E.

AU - Parker, F. T.

AU - Hutten, A.

AU - Thomas, G.

PY - 1993

Y1 - 1993

N2 - Giant magnetoresistance in sputtered single films of Cu-Co and Ag-Co heterogeneous alloys is discussed. The films consist of Co-rich precipitates in a nonferromagnetic matrix. The Ag-Co films have higher Δρ/ρ and Δρ values than the Cu-Co films, possibly due to less Co dissolved in the Ag matrix. Δρ scales inversely with precipitate particle size, implying that Co-rich clusters ≤20 Å diameter may be most effective for spin dependent scattering. This trend of the data and a phenomenological model suggest that interfacial spin dependent scattering is significantly stronger than the scattering within the Co-rich particles.

AB - Giant magnetoresistance in sputtered single films of Cu-Co and Ag-Co heterogeneous alloys is discussed. The films consist of Co-rich precipitates in a nonferromagnetic matrix. The Ag-Co films have higher Δρ/ρ and Δρ values than the Cu-Co films, possibly due to less Co dissolved in the Ag matrix. Δρ scales inversely with precipitate particle size, implying that Co-rich clusters ≤20 Å diameter may be most effective for spin dependent scattering. This trend of the data and a phenomenological model suggest that interfacial spin dependent scattering is significantly stronger than the scattering within the Co-rich particles.

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JO - Journal of Applied Physics

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Giant magnetoresistance in heterogeneous Cu-Co and Ag-Co alloy films (invited)

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