Journal of Material Sciences & Engineering

Kosuri Umadevi

Publications

• Research Article
  Tuning Magnetic Properties of Thick CoFeB Film by Interlayer Coupling in Trilayer Structured Thin Films
  Author(s): Anabil Gayen, Arout Chelvane J, Kosuri Umadevi and Perumal AlagarsamyAnabil Gayen, Arout Chelvane J, Kosuri Umadevi and Perumal Alagarsamy
  
  This study deals with tuning magnetic properties of a thick amorphous (a-)Co20Fe60B20 (CoFeB262) film by using interlayer magnetic coupling in trilayer structured films of [CoFeB262 (100 nm)/[Cr,Ta (x nm)]/CoFeB262 (y nm)] with y=2-50, xCr=0.75, 2 and xTa=1, 4. All the films are deposited directly on thermally oxidized Si substrate at ambient temperature using magnetron sputtering. The as-deposited a-CoFeB262 (100 nm) film exhibits magnetic stripe domain and transcritical hysteresis loop due to large effective magnetic anisotropy caused by stress induced during deposition of the films. On the other hand, the shape of magnetic hysteresis (M-H) loops in trilayer films transforms from transcritical to rectangular shaped one with enhanced remanence ratio (MR/MS) of ≥ 75% and single magneti.. Read More»
  DOI: 10.4172/2169-0022.1000437

  Abstract PDF