New closed flux stripe domain model for weak perpendicular magnetic anisotropy films

2006 ◽  
Vol 89 (17) ◽  
pp. 172510 ◽  
Author(s):  
Oscar de Abril ◽  
María del Carmen Sánchez ◽  
Claudio Aroca
Keyword(s):  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Domain Model ◽  
Stripe Domain

Perpendicular Magnetic Anisotropy in Fe–N Thin Films: Threshold Field for Irreversible Magnetic Stripe Domain Rotation

SPIN ◽  
2016 ◽  
Vol 06 (04) ◽  
pp. 1640014 ◽  
Author(s):  
L.-C. Garnier ◽  
M. Eddrief ◽  
S. Fin ◽  
D. Bisero ◽  
F. Fortuna ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Magnetic Anisotropy ◽  
Magnetic Measurements ◽  
Perpendicular Magnetic Anisotropy ◽  
The Body ◽  
Threshold Field ◽  
Iron Nitride ◽  
Magnetic Field Direction ◽  
Stripe Domain

The magnetic properties of an iron nitride thin film obtained by ion implantation have been investigated. N[Formula: see text] ions were implanted in a pristine iron layer epitaxially grown on ZnSe/GaAs(001). X-ray diffraction measurements revealed the formation of body-centered tetragonal N-martensite whose [Formula: see text]-axis is perpendicular to the thin film plane and [Formula: see text]-parameter is close to that of [Formula: see text]-Fe8N. Magnetic measurements disclosed a weak perpendicular magnetic anisotropy (PMA) whose energy density [Formula: see text] was assessed to about 105[Formula: see text]J/m3. A sharp decline of the in-plane magnetocrystalline anisotropy (MCA) was also observed, in comparison with the body-centered cubic iron. The origin of the PMA is attributed to the MCA of N-martensite and/or stress-induced anisotropy. As a result of the PMA, weak magnetic stripe domains with a period of about 130[Formula: see text]nm aligned along the last saturating magnetic field direction were observed at remanence by magnetic force microscopy. The application of an increasing in-plane magnetic field transverse to the stripes [Formula: see text] highlighted a threshold value ([Formula: see text][Formula: see text]T) above which these magnetic domains irreversibly rotated. Interestingly, below this threshold, the stripes do not rotate, leading to a zero remanent magnetization along the direction of the applied field. The interest of this system for magnetization dynamics is discussed.

Thickness Dependent Perpendicular Magnetic Domain Patterns in Sputtered Epitaxial FePt (001) L10 Films

1998 ◽  
Vol 517 ◽  
Author(s):  
J.-U. Thiele ◽  
L. Folks ◽  
M. F. Toney ◽  
D. K. Weller
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Domain ◽  
Perpendicular Magnetic Anisotropy ◽  
Grazing Incidence ◽  
Anisotropy Constant ◽  
Exchange Constant ◽  
Stripe Domain ◽  
Chemical Ordering ◽  
Out Of Plane ◽  
Face Centered

AbstractThe present paper discusses the magnetic anisotropy and magnetic domain structure of highly ordered epitaxial FePt(001) films grown on Pt seeded MgO(001) substrates. These films were grown by dc-magnetron sputtering from a Fe50Pt50 alloy target at a substrate temperature of 550°C during deposition. Thicknesses were varied between 15 and 170 nm. The presence of the highly anisotropic face centered tetragonal L10 crystal structure with a maximum long range chemical ordering of 95% and a low degree of misorientations was confirmed by specular and grazing incidence X-ray diffraction measurements. For film thicknesses ≥ 50 nm in-plane and out-of-plane hysteresis measurements indicate large perpendicular magnetic anisotropy and at the same time low remanent magnetisation. Magnetic force microscopy reveals highly interconnected perpendicular stripe domain patterns. From their characteristic width, which is strongly dependent on the film thickness, a value of the dipolar length, D0, of 50 ±5 nm is derived. Assuming an exchange constant of 10-6 erg/cm, this value is consistent with an anisotropy constant Ku ∼ 1.108 erg/cc.

scholarly journals Control of Stripe-Domain-Wall Magnetization in Multilayers Featuring Perpendicular Magnetic Anisotropy

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
Ruslan Salikhov ◽  
Fabian Samad ◽  
Benny Böhm ◽  
Sebastian Schneider ◽  
Darius Pohl ◽  
...  
Keyword(s):  
Domain Wall ◽  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Stripe Domain

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.

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

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

scholarly journals Buffer layer engineering of L10 FePd thin films with large perpendicular magnetic anisotropy

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025106
Author(s):  
Xinjun Wang ◽  
Sergiy Krylyuk ◽  
Daniel Josell ◽  
Delin Zhang ◽  
Deyuan Lyu ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Buffer Layer ◽  
Perpendicular Magnetic Anisotropy

scholarly journals The influence of an ultra-high resistivity Ta underlayer on perpendicular magnetic anisotropy in Ta/Pt/Co/Pt heterostructures

RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11219-11224
Author(s):  
Wei Zhang ◽  
Xiaoxiong Jia ◽  
Rui Wang ◽  
Huihui Liu ◽  
Zhengyu Xiao ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Stability ◽  
Magnetic Anisotropy ◽  
High Stability ◽  
Essential Role ◽  
Perpendicular Magnetic Anisotropy ◽  
Low Energy ◽  
High Resistivity ◽  
Excellent Thermal Stability ◽  
Low Energy Consumption

Thin films with perpendicular magnetic anisotropy (PMA) play an essential role in the development of technologies due to their excellent thermal stability and potential application in devices with high density, high stability, and low energy consumption.

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