Effects of ion irradiation on epitaxial Cu/Ni/Cu(001) with perpendicular magnetic anisotropy

2002 ◽  
Vol 81 (21) ◽  
pp. 4017-4019 ◽  
Author(s):  
T. G. Kim ◽  
Y. H. Shin ◽  
J. H. Song ◽  
M. C. Sung ◽  
I. S. Kim ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Irradiation ◽  
Perpendicular Magnetic Anisotropy

Physical and Magnetic Modification of Co/Pt Multilayers by Ion Irradiation

2002 ◽  
Vol 8 (4) ◽  
pp. 319-332 ◽  
Author(s):  
G.J. Kusinski ◽  
G. Thomas
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Irradiation ◽  
Strain Relaxation ◽  
Magnetic Domain ◽  
Perpendicular Magnetic Anisotropy ◽  
Spin Reorientation ◽  
Microstructural Changes ◽  
Spin Reorientation Transition ◽  
Before And After ◽  
Magnetic Modification

The microstructure of Co/Pt multilayers with large perpendicular magnetic anisotropy (PMA) was investigated before and after energetic ion irradiation. No pronounced microstructural changes were detected at ion doses sufficient to completely reduce the PMA and cause a spin reorientation transition to in-plane. Ion-induced displacement of Co and Pt atoms near Co/Pt interfaces lead to local “roughening” and Co layer strain relaxation, reducing the PMA. The magnetic domain confinement induced by ion irradiation and magnetic patterning by selective ion irradiation were also investigated.

On defects’ role in enhanced perpendicular magnetic anisotropy in Pt/Co/Pt, induced by ion irradiation

2019 ◽  
Vol 31 (18) ◽  
pp. 185801 ◽  
Author(s):  
M M Jakubowski ◽  
M O Liedke ◽  
M Butterling ◽  
E Dynowska ◽  
I Sveklo ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Irradiation ◽  
Perpendicular Magnetic Anisotropy

Formation of Co nanodisc with enhanced perpendicular magnetic anisotropy driven by Ga+ ion irradiation on Pt/Co/Pt films

2016 ◽  
Vol 94 (17) ◽  
Author(s):  
M. Sakamaki ◽  
K. Amemiya ◽  
I. Sveklo ◽  
P. Mazalski ◽  
M. O. Liedke ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Irradiation ◽  
Perpendicular Magnetic Anisotropy ◽  
Pt Films

scholarly journals Ion Irradiation of Oxidized FeCoZr-CaF2 Nanocomposite Films for Perpendicular Magnetic Anisotropy Enhancement

2017 ◽  
Vol 132 (2) ◽  
pp. 206-209
Author(s):  
J. Kasiuk ◽  
J. Fedotova ◽  
J. Przewoźnik ◽  
C. Kapusta ◽  
V. Skuratov ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Irradiation ◽  
Perpendicular Magnetic Anisotropy ◽  
Nanocomposite Films

TEM Study of Co/Pd and Co/Au Multilayers

1993 ◽  
Vol 51 ◽  
pp. 1036-1037
Author(s):  
A.E.M. De Veirman ◽  
F.J.G. Hakkens ◽  
W.M.J. Coene ◽  
F.J.A. den Broeder
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Beam ◽  
Perpendicular Magnetic Anisotropy ◽  
Optical Recording ◽  
Magnetic Multilayer ◽  
Ion Beam Sputtering ◽  
Cross Sectional ◽  
Transmission Electron ◽  
Beam Sputtering ◽  
Substrate Temperatures

There is currently great interest in magnetic multilayer (ML) thin films (see e.g.), because they display some interesting magnetic properties. Co/Pd and Co/Au ML systems exhibit perpendicular magnetic anisotropy below certain Co layer thicknesses, which makes them candidates for applications in the field of magneto-optical recording. It has been found that the magnetic anisotropy of a particular system strongly depends on the preparation method (vapour deposition, sputtering, ion beam sputtering) as well as on the substrate, underlayer and deposition temperature. In order to get a better understanding of the correlation between microstructure and properties a thorough cross-sectional transmission electron microscopy (XTEM) study of vapour deposited Co/Pd and Co/Au (111) MLs was undertaken (for more detailed results see ref.).The Co/Pd films (with fixed Pd thickness of 2.2 nm) were deposited on mica substrates at substrate temperatures Ts of 20°C and 200°C, after prior deposition of a 100 nm Pd underlayer at 450°C.

Magnetization dynamics of irradiation-fabricated perpendicularly magnetized dots inside a softer magnetic matrix

2003 ◽  
Vol 777 ◽  
Author(s):  
T. Devolder ◽  
M. Belmeguenai ◽  
C. Chappert ◽  
H. Bernas ◽  
Y. Suzuki
Keyword(s):  
Domain Wall ◽  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Ion Irradiation ◽  
Magnetic Nanostructures ◽  
Magnetic Storage ◽  
Exchange Field ◽  
Static Magnetization ◽  
Specific Domain ◽  
Helium Ion

AbstractGlobal Helium ion irradiation can tune the magnetic properties of thin films, notably their magneto-crystalline anisotropy. Helium ion irradiation through nanofabricated masks can been used to produce sub-micron planar magnetic nanostructures of various types. Among these, perpendicularly magnetized dots in a matrix of weaker magnetic anisotropy are of special interest because their quasi-static magnetization reversal is nucleation-free and proceeds by a very specific domain wall injection from the magnetically “soft” matrix, which acts as a domain wall reservoir for the “hard” dot. This guarantees a remarkably weak coercivity dispersion. This new type of irradiation-fabricated magnetic device can also be designed to achieve high magnetic switching speeds, typically below 100 ps at a moderate applied field cost. The speed is obtained through the use of a very high effective magnetic field, and high resulting precession frequencies. During magnetization reversal, the effective field incorporates a significant exchange field, storing energy in the form of a domain wall surrounding a high magnetic anisotropy nanostructure's region of interest. The exchange field accelerates the reversal and lowers the cost in reversal field. Promising applications to magnetic storage are anticipated.

scholarly journals Interfacial Dzyaloshinskii-Moriya Interaction, Perpendicular Magnetic Anisotropy and damping in CoFeB/oxide-based systems

2021 ◽  
pp. 1-1
Author(s):  
I. Benguettat-El Mokhtari ◽  
Y. Roussigne ◽  
S. M. Cherif ◽  
S. Auffret ◽  
C. Baraduc ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Moriya Interaction
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