Controllable magnetic anisotropy and magnetostriction constant in palladium cobalt alloy films: Effects of composition, thickness, and stress

2019 ◽  
Vol 126 (8) ◽  
pp. 083906 ◽  
Author(s):  
Takashi Harumoto ◽  
Ji Shi ◽  
Yoshio Nakamura
Keyword(s):  
Magnetic Anisotropy ◽  
Cobalt Alloy ◽  
Alloy Films ◽  
Magnetostriction Constant

Origins of substrate-topography-induced magnetic anisotropy in sputtered cobalt-alloy films

2002 ◽  
Vol 92 (6) ◽  
pp. 3223-3230 ◽  
Author(s):  
D. J. Twisselmann ◽  
P. G. Chambers ◽  
C. A. Ross ◽  
G. Khanna ◽  
B. M. Clemens
Keyword(s):  
Magnetic Anisotropy ◽  
Cobalt Alloy ◽  
Alloy Films ◽  
Substrate Topography ◽  
Induced Magnetic Anisotropy

Effect of Thickness on Mechanically Tunable Magnetic Anisotropy of FeGa Thin Films Deposited on Flexible Substrates

2015 ◽  
Vol 815 ◽  
pp. 227-232 ◽  
Author(s):  
Ying Yu ◽  
Shu Hong Xie ◽  
Qing Feng Zhan
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Effective Strain ◽  
Anisotropy Field ◽  
Saturation Field ◽  
Effective Anisotropy ◽  
Magnetostriction Constant ◽  
The Difference ◽  
Different Strains

A practical way to manipulate the magnetic anisotropy of magnetostrictive FeGa thin films grown on flexible polyethylene terephthalate (PET) substrates is introduced in this study. The effect of film thickness on magnetic properties and magnetostriction constant of polycrystalline FeGa thin films was investigated. The anisotropy field Hk of flexible FeGa films, i.e., the saturation field determined by fitting the hysteresis curves measured along the hard axis, was enhanced with increasing the tensile strain applied along the easy axis of the thin films, but this enhancement via strain became unconspicuous with increasing the thickness of FeGa films. In order to study the magnetic sensitivity of thin films responding to the external stress, we applied different strains on these films and measure the corresponding anisotropy field. Moreover, the effective magnetostriction constant of FeGa films was calculated from the changes of both anisotropy field and external strain based on the Villari effect. A Neel’s phenomenological model was developed to illustrate that the effective anisotropy field of FeGa thin films was contributed from both the constant volume term and the inverse thickness dependent surface term. Therefore, the magnetic properties for the volume and surface of FeGa thin films were different, which has been verified in this work by using vibrating sample magnetometer (VSM) and magneto-optic Kerr effect (MOKE) system. The anisotropy field contributed by the surface of FeGa film and obtained by MOKE is smaller than that contributed by the film volume and measured by VSM. We ascribed the difference in Hk to the relaxation of the effective strain applied on the films with increasing the thickness of films.

Porosity and its Effect on Barrier Performance of Thin Electroless Cobalt Alloy Caps

2007 ◽  
Vol 990 ◽  
Author(s):  
Qingyun Chen ◽  
Jun Liu ◽  
Elizabeth Walker ◽  
Richard Hurtubise ◽  
Daniel Stritch ◽  
...  
Keyword(s):  
Process Optimization ◽  
Copper Substrate ◽  
Deposition Process ◽  
Barrier Property ◽  
Electrochemical Methods ◽  
Cobalt Alloy ◽  
Alloy Films ◽  
Barrier Performance ◽  
The Impact ◽  
Deposit Film

ABSTRACTPinhole densities of electroless cobalt alloy films on copper substrate are characterized using optical and electrochemical methods. The impact of pits or pinholes on deposit film barrier property is discussed. The improved film barrier property is shown by reduction of pits formation through deposition process optimization.

Magnetooptical properties of alloy films Co–Pd with perpendicular magnetic anisotropy

1999 ◽  
Vol 203 (1-3) ◽  
pp. 244-246 ◽  
Author(s):  
E Gan'shina ◽  
V Guschin ◽  
S Kirov ◽  
O Shabanova ◽  
A Tselev
Keyword(s):  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Alloy Films
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