The effect of deposition process on the magnetic properties of coupled permalloy thin films

1993 ◽  
Vol 73 (10) ◽  
pp. 6365-6367 ◽  
Author(s):  
E. W. Hill ◽  
J. P. Li ◽  
B. K. Birtwistle
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Deposition Process ◽  
Permalloy Thin Films

Effect of Stress-induced Magnetic Anisotropy on the Properties of Giant Magnetostrictive Single Layer and Multilayer Thin Films

2004 ◽  
Vol 855 ◽  
Author(s):  
J. H. Tan ◽  
V. H. Guerrero ◽  
R. C. Wetherhold ◽  
W. A. Anderson
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Rf Sputtering ◽  
Single Layer ◽  
Annealing Treatment ◽  
Deposition Process ◽  
Vacuum System ◽  
Internal Stresses ◽  
Sensors And Actuators

ABSTRACTGiant magnetostrictive thin films deposited on nonmagnetic substrates can constitute effective sensors and actuators for microdevices. In this work, we investigated the effects of a stress-induced anisotropy on the magnetic properties of Tb0.4Fe0.6, Fe0.5Co0.5 single layer films and [Tb0.4Fe0.6/Fe0.5Co0.5]n multilayers deposited on Si substrates. The magnetostrictive thin films were fabricated by means of RF sputtering and were subjected to a post-deposition annealing treatment. The uniaxial magnetic anisotropy was induced by bending the substrate before deposition and then allowing it to resume its original flat shape after depositing the film. The heat treatment was performed in a vacuum system with a vacuum of 10−6 Torr. The magnetic properties of the fabricated specimens were measured using a SQUID. SEM and XRD analyses were performed to ensure that the thermal treatment would relax the internal stresses induced during the deposition process without crystallizing the film. The thickness of the single layer thin films studied was between 300 and 800 nm while multilayer samples consisted of 6 layers with each layer thickness ranged from about 20 to 40 nm. Compared to single layer samples, multilayer samples with stress anneal growth exhibited an improvement in magnetic saturation by a factor of two while maintaining a low coercive field. Manipulations of the magnitude and direction of magnetic anisotropy was observed by introducing various values of tensile and compressive stress into the film.

Magnetic Properties of Co-B Nanostructures Prepared via Electroless Deposition

2015 ◽  
Vol 233-234 ◽  
pp. 648-652
Author(s):  
David Richardson ◽  
Fernando M.F. Rhen
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Electroless Deposition ◽  
Deposition Time ◽  
Magnetic Measurements ◽  
Deposition Process ◽  
Specific Magnetization

We have investigated the magnetic properties of nanostructured Co-B alloys, that were prepared via electroless deposition. The deposition process results in the formation of a nanostructure consisting of nanotubes connected to thin films at both ends. Depending on the deposition time end-open or end-closed nanotubes can be formed. The overall nanostructure of Co-B deposit has a specific magnetization of 65.6 ± 8 JT-1Kg-1 (0.75 ± 0.09 μB per Co atom). We also investigated the anisotropy of the nanostructure by carrying out magnetic measurements with and without the top and base films. We only observed magnetic anisotropy in nanostructures with thin films, which had minimum coercivities of 557 A/m (7 Oe) and 4536 A/m (57 Oe) measured parallel and perpendicular to the nanotube axis. The nanotubes do not show any significant anisotropy with coercivities of 8753 A/m (110 Oe) and 7161 A/m (90 Oe) parallel and perpendicular to the nanotube axis.

Role of oxygen impurity in growth and magnetic properties of Ni83Fe17 permalloy thin films

2010 ◽  
Vol 322 (21) ◽  
pp. 3266-3270 ◽  
Author(s):  
P. Chowdhury ◽  
Harish C. Barshilia ◽  
K.S. Rajam ◽  
P.K. Mishra ◽  
C.L. Prajapat ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Oxygen Impurity ◽  
Permalloy Thin Films

Crystal structure and magnetic properties of UO2/permalloy thin films

2015 ◽  
Vol 591 ◽  
pp. 271-275
Author(s):  
E.A. Tereshina ◽  
S. Daniš ◽  
R. Springell ◽  
Z. Bao ◽  
L. Havela ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Magnetic Properties ◽  
Permalloy Thin Films
Sign in / Sign up

Export Citation Format

Share Document