OBSERVATION OF HIGHLY ENHANCED CURIE-TEMPERATURE AT NI-AL ALLOY SURFACES Academic Article uri icon

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 Ni–9% Al (110) clean surface has been found 111 K higher than the bulk value, and for Ni–5% Al the enhancement is 58 K. Its origin and the induced attenuation effects are discussed. Ar bombardment or O 2 adsorption shift gradually the surface related transition temperature towards the bulk value.

publication date

  • January 1, 1995