The structure and magnetism of epitaxial Ni80Fe20 films grown on stepped and nonstepped Mo(001) planes and MgO(110) substrate have been studied. Single-crystal Ni80Fe20(110) films were prepared on MgO(110) substrates. Bi-crystal Ni80Fe20(110) films were stabilized on Mo(001) nonstepped planes. On Mo(001) stepped surfaces, interestingly enough, quad-crystal Ni80Fe20(110) films with rough surfaces were formed above ∼200°C and single-crystal Ni80Fe20(001) films with smooth surfaces were formed below ∼100°C. Thick films (>300 Å) of single-crystal, bicrystal, and quad-crystal Ni80Fe20(110) show uniaxial, biaxial and isotropic magnetic behavior, respectively. The easy axis of the single-crystal Ni80Fe20(001) is directed along the Mo step edge direction and the M-H loop along the hard axis reveals a two-step magnetic moment rotation process. The magnetic anisotropies of the Ni80Fe20 films were determined by vibrating sample magnetometer. Details of the epitaxial growth and interplay of structure and magnetism of these Ni80Fe20 films are presented.
|Number of pages||9|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2001 Nov 1|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics