scholarly journals Enhanced orbital magnetic moments in magnetic heterostructures with interface perpendicular magnetic anisotropy

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Tetsuro Ueno ◽  
Jaivardhan Sinha ◽  
Nobuhito Inami ◽  
Yasuo Takeichi ◽  
Seiji Mitani ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Moments ◽  
Perpendicular Magnetic Anisotropy ◽  
Magnetic Heterostructures

scholarly journals Detecting quadrupole: a hidden source of magnetic anisotropy for Manganese alloys

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jun Okabayashi ◽  
Yoshio Miura ◽  
Yohei Kota ◽  
Kazuya Z. Suzuki ◽  
Akimasa Sakuma ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Quantum Physics ◽  
Theoretical Calculations ◽  
Magnetic Moments ◽  
Perpendicular Magnetic Anisotropy ◽  
Linear Dichroism ◽  
First Principles Calculation ◽  
X Ray ◽  
Manganese Alloys ◽  
Ordered Alloys

Abstract Mn-based alloys exhibit unique properties in the spintronics materials possessing perpendicular magnetic anisotropy (PMA) beyond the Fe and Co-based alloys. It is desired to figure out the quantum physics of PMA inherent to Mn-based alloys, which have never been reported. Here, the origin of PMA in ferrimagnetic Mn3− δ Ga ordered alloys is investigated to resolve antiparallel-coupled Mn sites using x-ray magnetic circular and linear dichroism (XMCD/XMLD) and a first-principles calculation. We found that the contribution of orbital magnetic moments in PMA is small from XMCD and that the finite quadrupole-like orbital distortion through spin-flipped electron hopping is dominant from XMLD and theoretical calculations. These findings suggest that the spin-flipped orbital quadrupole formations originate from the PMA in Mn3− δ Ga and bring the paradigm shift in the researches of PMA materials using x-ray magnetic spectroscopies.

scholarly journals A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance

2014 ◽  
Vol 26 (37) ◽  
pp. 6483-6490 ◽  
Author(s):  
Zhenchao Wen ◽  
Hiroaki Sukegawa ◽  
Takao Furubayashi ◽  
Jungwoo Koo ◽  
Koichiro Inomata ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Tunnel Magnetoresistance ◽  
Magnetic Heterostructures

Perpendicular magnetic anisotropy of Tb magnetic moments in Tb/Fe multilayers

1997 ◽  
Vol 165 (1-3) ◽  
pp. 408-410
Author(s):  
M. Trhlík ◽  
P. De Moor ◽  
K. Mibu ◽  
N. Severijns ◽  
T. Shinjo ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Moments ◽  
Perpendicular Magnetic Anisotropy

Orbital magnetic moments of Co in multilayers with perpendicular magnetic anisotropy

1994 ◽  
Vol 49 (18) ◽  
pp. 12888-12896 ◽  
Author(s):  
D. Weller ◽  
Y. Wu ◽  
J. Stöhr ◽  
M. G. Samant ◽  
B. D. Hermsmeier ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Moments ◽  
Perpendicular Magnetic Anisotropy

Investigation and Effective Control of Perpendicular Magnetic Anisotropy for TbCo Films with Different Underlayers

SPIN ◽  
2016 ◽  
Vol 06 (03) ◽  
pp. 1650009 ◽  
Author(s):  
Minghong Tang ◽  
Shaohai Chen ◽  
Xiangli Zhang ◽  
Zongzhi Zhang ◽  
Q. Y. Jin
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Saturation Magnetization ◽  
Magnetic Moments ◽  
Perpendicular Magnetic Anisotropy ◽  
Effective Control ◽  
Experimental Measurements ◽  
Alloy Films ◽  
Micromagnetic Simulations

We performed a detailed study on the perpendicular magnetic anisotropy (PMA) of TbCo film by using two kinds of nonmagnetic underlayers, Ta and Ta/Cu with different thicknesses. We found that for both the Tb-rich and Co-rich TbCo alloy films, the PMA strength decreases considerably with the increase of Ta underlayer thickness, while their net saturation magnetization [Formula: see text] exhibit opposite varying trends. The [Formula: see text] value continues to increase for the Co-rich TbCo samples while decrease for the Tb-rich films. Interestingly, an additional Cu layer inserted between the Ta and TbCo layers can efficiently recover the PMA and [Formula: see text]. We attribute such observed variation behaviors of magnetic properties to the increased disordering of Tb magnetic moments at the Ta/TbCo interface, which has been verified by both experimental measurements and micromagnetic simulations.

Magnetic anisotropic properties of Pd/Co/Pd trilayer films studied by X-ray absorption spectroscopy and magnetic circular dichroism

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19014-19019 ◽  
Author(s):  
K. Saravanan ◽  
C.-H. Kao ◽  
Y.-C. Shao ◽  
Y.-F. Wang ◽  
B.-Y. Wang ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Electronic Structures ◽  
Magnetic Circular Dichroism ◽  
Magnetic Moments ◽  
Perpendicular Magnetic Anisotropy ◽  
Effect Of Temperature ◽  
Alloy Formation ◽  
X Ray ◽  
The Relationship ◽  
X Ray Absorption

Strong perpendicular magnetic anisotropy (PMA) is observed in annealed Pd/Co/Pd trilayer film. The effect of temperature on alloy formation, the relationship among the atomic/electronic structures, magnetic moments and PMA has been studied.

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
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