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Related papers: Perpendicular magnetic anisotropy and magnetizatio…

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We report on the perpendicular magnetic anisotropy (PMA) behavior of heavy metal (HM)/ Fe alloy/MgO thin film heterostructures after an ultrathin HfO2 passivation layer is inserted between the Fe alloy and the MgO. This is accomplished by…

Materials Science · Physics 2017-05-10 Yongxi Ou , D. C. Ralph , R. A. Buhrman

Magnetization reversal mechanisms and depth-dependent magnetic profile have been investigated in Co/Pd thin films magnetron-sputtered under continuously varying pressure with opposite deposition orders. For samples grown under increasing…

Materials Science · Physics 2014-04-15 Peter K. Greene , B. J. Kirby , J. W. Lau , J. A. Borchers , M. R. Fitzsimmons , Kai Liu

We study THz-driven spin dynamics in thin CoPt films with perpendicular magnetic anisotropy. Femtosecond magneto-optical Kerr effect measurements show that demagnetization amplitude of about $1\%$ can be achieved with a peak THz electric…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Debanjan Polley , Matteo Pancaldi , Matthias Hudl , Paolo Vavassori , Sergei Urazhdin , Stefano Bonetti

Impact of rapid thermal processing (RTP) on microstructure and magnetic properties of Gd-Fe thin films have been investigated with a special emphasis to magnetic microstructure. 100 nm thick amorphous Gd-Fe film shows elongated stripe…

Mesoscale and Nanoscale Physics · Physics 2018-03-28 A. Talapatraa , J. Arout Chelvane , B. Satpati , S. Kumar , J. Mohanty

We demonstrate a simple method to tailor the magnetization reversal mechanisms of Co/Pt multilayers by depositing them onto large area nanoporous anodized alumina (AAO) with various aspect ratios, A = pore depth/diameter. Magnetization…

Materials Science · Physics 2009-01-30 M. Tofizur Rahman , Randy K. Dumas , Nasim Eibagi , Nazmun N Shams , Yun-Chung Wu , Kai Liu , Chih-Huang Lai

[Co/Ni] multilayers with perpendicular magnetic anisotropy (PMA) have been researched and applied in various spintronic applications. Typically the seed layer material is studied to provide the desired face-centered cubic (\textit{fcc})…

The perpendicular magnetic anisotropy K$_e$$_f$$_f$, magnetization reversal, and field-driven domain wall velocity in the creep regime are modified in Pt/Co(0.85-1.0 nm)/Pt thin films by strain applied via piezoelectric transducers.…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 P. M. Shepley , A. W. Rushforth , M. Wang , G. Burnell , T. A. Moore

The magnetic properties of MnAs epilayers have been investigated for two different substrate orientations: GaAs(100) and GaAs(111). We have analyzed the magnetization reversal under magnetic field at low temperatures, determining the…

Materials Science · Physics 2014-02-26 L. B. Steren , J. Milano , V. Garcia , M. Marangolo , M. Eddrief , V. H. Etgens

We investigate magnetic anisotropy and magnetization reversal mechanism in chromium telluride thin films grown by molecular beam epitaxy. We report existence of strong perpendicular anisotropy in these thin films, along with a relatively…

Mesoscale and Nanoscale Physics · Physics 2017-05-10 Tanmoy Pramanik , Anupam Roy , Rik Dey , Amritesh Rai , Samaresh Guchhait , Hema CP Movva , Cheng-Chih Hsieh , Sanjay K Banerjee

Controlling the uniaxial magnetic anisotropy is of practical interest to a wide variety of applications. We study Co$_{40}$Fe$_{40}$B$_{20}$ single films grown on various crystalline orientations of LiNbO$_3$ substrates and on oxidized…

Materials Science · Physics 2023-06-06 R. L. Seeger , F. Millo , A. Mouhoub , G. de Loubens , A. Solignac , T. Devolder

We examined the photo-induced dynamics of ferromagnetic Co/Pt thin films demonstrating perpendicular magnetic anisotropy with element specificity using resonant polar magneto-optical Kerr effect measurements at Pt~N${}_{6,7}$ and…

Understanding the stability of thin film nanomagnets with perpendicular magnetic anisotropy (PMA) against thermally induced magnetization reversal is important when designing perpendicularly magnetized patterned media and magnetic random…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 Gabriel D. Chaves-OFlynn , Eric Vanden-Eijnden , D. L. Stein , A. D. Kent

Perpendicularly magnetized films showing small saturation magnetization, $M_\mathrm{s}$, are essential for spin-transfer-torque writing type magnetoresistive random access memories, STT-MRAMs. An intermetallic compound, {(Mn-Cr)AlGe} of the…

Materials Science · Physics 2021-07-02 Takahide Kubota , Keita Ito , Rie Y Umetsu , Koki Takanashi

The magnetic properties of ordered nanoscale Co/Cu/Py multilayer antidot films with different pore sizes prepared on top of nanoporous alumina membranes are presented. By using Co and Py films separated by a Cu thin layer, and tuning the…

Materials Science · Physics 2014-12-23 J. C. Denardin , E. Burgos , R. Lavín , S. Vojkovic , J. Briones , M. Flores

A model is studied for the theoretical description of nanoscale magnetic films with high perpendicular anisotropy. In the model the magnetic film is described in terms of single domain magnetic grains with Ising-like behavior, interacting…

Statistical Mechanics · Physics 2016-08-31 U. Nowak

Recent research on CoPd alloys with perpendicular magnetic anisotropy (PMA) has suggested that they might be useful as the pinning layer in CoFeB/MgO-based perpendicular magnetic tunnel junctions (pMTJ's) for various spintronic applications…

Materials Science · Physics 2019-03-12 Joseph. B. Abugri , Billy D. Clark , P. B. Visscher , Jie Gong , Subhadra Gupta

The ferromagnetism of a thin GaMnAs layer with a perpendicular easy anisotropy axis is investigated by means of several techniques, that yield a consistent set of data on the magnetic properties and the domain structure of this diluted…

Rare earth/transition metal (RE/TM) multilayers with perpendicular magnetic anisotropy are key ingredients for the development of spintronic applications. Their compensation temperature depends on the ratio of the thicknesses of rare earth…

Engineering magnetic anisotropy in a ferro- or ferrimagnetic (FM) thin film is crucial in spintronic device. One way to modify the magnetic anisotropy is through the surface of the FM thin film. Here, we report the emergence of a…

The magnetization reversal process in thin-film ferromagnetic elements with surface anisotropy of various shapes and sizes is investigated by means of numerical simulation. The dependence of the perpendicular and in-plane hysteresis loops…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 N. A. Usov , O. N. Serebryakova