Structural and magnetoresistive properties of magnetic tunnel junctions with half-metallic Co2 MnAl

J. J. Qiu; G. C. Han; W. K. Yeo; P. Luo; Zaibing Guo; T. Osipowicz

doi:10.1063/1.2830554

Structural and magnetoresistive properties of magnetic tunnel junctions with half-metallic Co2 MnAl

J. J. Qiu, G. C. Han, W. K. Yeo, P. Luo, Zaibing Guo, T. Osipowicz

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

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Abstract

A series of polycrystalline full-Heusler Co2 MnAl thin films were deposited on Si (100) coated with thermo Si O2 by using different types of seed layers such as Cr, Mg, MgOCr, and MgO. The properties of the Co2 MnAl thin films such as the coercivity, atomic composition, and crystalline structure strongly depend on the deposition conditions and seed layers. Very soft Co2 MnAl thin films with coercivity of 8.3 Oe and small magnetostriction coefficient λS =1.43× 10-5 had been obtained when MgO was used as seed layer. Magnetic tunnel junctions with magnetoresistance ratio of 12%-19% by utilizing the Co2 MnAl as bottom ferromagnetic electrode have been successfully fabricated.

Original language	English (US)
Article number	07A903
Journal	Journal of Applied Physics
Volume	103
Issue number	7
DOIs	https://doi.org/10.1063/1.2830554
State	Published - Apr 21 2008

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Physics and Astronomy(all)

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title = "Structural and magnetoresistive properties of magnetic tunnel junctions with half-metallic Co2 MnAl",

abstract = "A series of polycrystalline full-Heusler Co2 MnAl thin films were deposited on Si (100) coated with thermo Si O2 by using different types of seed layers such as Cr, Mg, MgOCr, and MgO. The properties of the Co2 MnAl thin films such as the coercivity, atomic composition, and crystalline structure strongly depend on the deposition conditions and seed layers. Very soft Co2 MnAl thin films with coercivity of 8.3 Oe and small magnetostriction coefficient λS =1.43× 10-5 had been obtained when MgO was used as seed layer. Magnetic tunnel junctions with magnetoresistance ratio of 12%-19% by utilizing the Co2 MnAl as bottom ferromagnetic electrode have been successfully fabricated.",

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T1 - Structural and magnetoresistive properties of magnetic tunnel junctions with half-metallic Co2 MnAl

AU - Qiu, J. J.

AU - Han, G. C.

AU - Yeo, W. K.

AU - Luo, P.

AU - Guo, Zaibing

AU - Osipowicz, T.

PY - 2008/4/21

Y1 - 2008/4/21

N2 - A series of polycrystalline full-Heusler Co2 MnAl thin films were deposited on Si (100) coated with thermo Si O2 by using different types of seed layers such as Cr, Mg, MgOCr, and MgO. The properties of the Co2 MnAl thin films such as the coercivity, atomic composition, and crystalline structure strongly depend on the deposition conditions and seed layers. Very soft Co2 MnAl thin films with coercivity of 8.3 Oe and small magnetostriction coefficient λS =1.43× 10-5 had been obtained when MgO was used as seed layer. Magnetic tunnel junctions with magnetoresistance ratio of 12%-19% by utilizing the Co2 MnAl as bottom ferromagnetic electrode have been successfully fabricated.

AB - A series of polycrystalline full-Heusler Co2 MnAl thin films were deposited on Si (100) coated with thermo Si O2 by using different types of seed layers such as Cr, Mg, MgOCr, and MgO. The properties of the Co2 MnAl thin films such as the coercivity, atomic composition, and crystalline structure strongly depend on the deposition conditions and seed layers. Very soft Co2 MnAl thin films with coercivity of 8.3 Oe and small magnetostriction coefficient λS =1.43× 10-5 had been obtained when MgO was used as seed layer. Magnetic tunnel junctions with magnetoresistance ratio of 12%-19% by utilizing the Co2 MnAl as bottom ferromagnetic electrode have been successfully fabricated.

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DO - 10.1063/1.2830554

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JF - Journal of Applied Physics

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ER -

Structural and magnetoresistive properties of magnetic tunnel junctions with half-metallic Co2 MnAl

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