Title :
Ni and NiFe nanocrystalline films prepared with gas-deposition method
Author :
Kita, Eiji ; Shiozawa, K. ; Sasaki, Y. ; Iwamoto, Y. ; Tasaki, A. ; Tanimoto, H.
Author_Institution :
Inst. of Appl. Phys., Tsukuba Univ., Ibaraki, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
The magnetic properties and structures of Ni and NiFe nanocrystalline films prepared with the gas-deposition method (GDM) are investigated. From the results of STM and SEM, fine particles, approximately 10 nm in diameter, were seen in the films. Furthermore, aggregates several tens of nm in diameter, composed of the small particles, are also observed. The magnetization of the Ni nanocrystalline films is about 50 emu/g, or 90% of that of bulk Ni. Coercivity of the Ni nanocrystals ranged from 4 to 20 Oe. In the case of NiFe, the concentration of Fe is slightly increased as the evaporation temperature is increased
Keywords :
coercive force; ferromagnetic materials; iron alloys; magnetic particles; magnetic thin films; magnetisation; nanostructured materials; nickel; nickel alloys; particle size; scanning electron microscopy; scanning tunnelling microscopy; soft magnetic materials; vacuum deposition; 10 nm; Ni; Ni nanocrystalline films; NiFe; NiFe nanocrystalline films; SEM; STM; aggregates; coercivity; evaporation temperature; fine particles; gas-deposition method; magnetic properties; magnetization; small particles; structures; Iron; Magnetic films; Magnetic materials; Magnetic properties; Nanostructured materials; Plasma measurements; Plasma temperature; Scanning electron microscopy; Soft magnetic materials; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
