@article{33579,
  keywords = {nickel, nickel alloys, Magnetic (CE), Martensitic phase transitions},
  author = {P Pörsch and M Kallmayer and T Eichhorn and G Jakob and H.J Elmers and C.A Jenkins and C Felser and Ramamoorthy Ramesh and M Huth},
  title = {Suppression of martensitic phase transition at the Ni2 MnGa film surface},
  abstract = {We investigated magnetic and structural properties at the surface of epitaxial Ni2 MnGa (110) Heusler films using x-ray absorption spectroscopy and x-ray magnetic circular dichroism both in transmission and total electron yield mode. The magnetic shape memory films were prepared by dc sputtering from a stoichiometric target onto sapphire substrates at an optimized substrate temperature of 773 K. X-ray diffraction confirms a (110) oriented growth on Al2 O3 (11 2- 0) and an austenite to martensite transition at 270-280 K. At the surface the martensitic phase transition and the magnetization are strongly suppressed. The deviation in the surface properties is caused by a Mn deficiency near the surface. © 2008 American Institute of Physics.},
  year = {2008},
  journal = {Applied Physics Letters},
  volume = {93},
  number = {2},
  issn = {00036951},
  doi = {10.1063/1.2957647},
  note = {cited By 18},
  language = {eng},
}