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

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32 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 languageEnglish
Pages (from-to)4059-4062
Number of pages4
JournalPhysical Review Letters
Volume74
Issue number20
DOIs
StatePublished - 1 Jan 1995

ASJC Scopus subject areas

  • General Physics and Astronomy

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