Observation of highly enhanced curie temperature at Ni-Al alloy surfaces

M. Polak; L. Rubinovich; J. Deng

doi:10.1103/PhysRevLett.74.4059

Observation of highly enhanced curie temperature at Ni-Al alloy surfaces

M. Polak, L. Rubinovich, J. Deng

Department of Chemistry

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31 Scopus citations

Abstract

Detection of a distinct ferromagnetic order at surfaces of Ni-Al solid solutions is reported. By monitoring Lorentz force induced attenuation of the low-energy Auger electron spectrum, the Curie temperature at the annealed Ni9% Al(110) clean surface has been found 111 K higher than the bulk value, and for Ni5% Al the enhancement is 58 K. Its origin and the induced attenuation effects are discussed. Ar bombardment or O2 adsorption shift gradually the surface related transition temperature towards the bulk value.

Original language	English
Pages (from-to)	4059-4062
Number of pages	4
Journal	Physical Review Letters
Volume	74
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.74.4059
State	Published - 1 Jan 1995

ASJC Scopus subject areas

Physics and Astronomy (all)

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10.1103/PhysRevLett.74.4059

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title = "Observation of highly enhanced curie temperature at Ni-Al alloy surfaces",

abstract = "Detection of a distinct ferromagnetic order at surfaces of Ni-Al solid solutions is reported. By monitoring Lorentz force induced attenuation of the low-energy Auger electron spectrum, the Curie temperature at the annealed Ni9% Al(110) clean surface has been found 111 K higher than the bulk value, and for Ni5% Al the enhancement is 58 K. Its origin and the induced attenuation effects are discussed. Ar bombardment or O2 adsorption shift gradually the surface related transition temperature towards the bulk value.",

author = "M. Polak and L. Rubinovich and J. Deng",

year = "1995",

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AU - Rubinovich, L.

AU - Deng, J.

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N2 - Detection of a distinct ferromagnetic order at surfaces of Ni-Al solid solutions is reported. By monitoring Lorentz force induced attenuation of the low-energy Auger electron spectrum, the Curie temperature at the annealed Ni9% Al(110) clean surface has been found 111 K higher than the bulk value, and for Ni5% Al the enhancement is 58 K. Its origin and the induced attenuation effects are discussed. Ar bombardment or O2 adsorption shift gradually the surface related transition temperature towards the bulk value.

AB - Detection of a distinct ferromagnetic order at surfaces of Ni-Al solid solutions is reported. By monitoring Lorentz force induced attenuation of the low-energy Auger electron spectrum, the Curie temperature at the annealed Ni9% Al(110) clean surface has been found 111 K higher than the bulk value, and for Ni5% Al the enhancement is 58 K. Its origin and the induced attenuation effects are discussed. Ar bombardment or O2 adsorption shift gradually the surface related transition temperature towards the bulk value.

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Observation of highly enhanced curie temperature at Ni-Al alloy surfaces

Abstract

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