Surface effects on electrical and magnetic properties of Ni75.2Mn23.6Pt1.2 alloy films


Oner Y.

THIN SOLID FILMS, vol.616, pp.680-689, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 616
  • Publication Date: 2016
  • Doi Number: 10.1016/j.tsf.2016.09.051
  • Journal Name: THIN SOLID FILMS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.680-689
  • Istanbul Technical University Affiliated: No

Abstract

We report on the magnetic, electrical resistivity and ferromagnetic resonance (FMR) properties of polycrystalline thin films of Ni75.2Mn23.6Pt1.2 prepared by electron beam evaporation with thicknesses from 10 to 800 nm. We measured field cooled magnetization as a function of temperature as well as hysteresis loops in parallel and perpendicular geometries (field parallel/perpendicular to film surface) at selected temperatures. We observe asymmetric double-shifted hysteresis loops below the freezing temperature, T-f, which can be attributed to the competition of unidirectional and uni-axial anisotropy fields.