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X-ray spectroscopy measurements have been performed on a series of Pt/Co/AlOx trilayers to investigate the role of Co oxidation in the perpendicular magnetic anisotropy of the Co/AlOx interface. It is observed that high temperature…

Using the spin-spiral formulation of the tight-binding linear muffin-tin orbital method, the principal components of the exchange stiffness tensor are calculated for typical hard magnets including tetragonal CoPt-type and hexagonal YCo5…

Materials Science · Physics 2009-11-10 K. D. Belashchenko

We report an experimental assessment of surface kinetic roughening properties that are anisotropic in space. Working for two specific instances of silicon surfaces irradiated by ion-beam sputtering under diverse conditions (with and without…

Materials Science · Physics 2015-06-11 Edoardo Vivo , Matteo Nicoli , Martin Engler , Thomas Michely , Luis Vázquez , Rodolfo Cuerno

We studied the depth dependent magnetization profile of the magnetostrictive Co thin film layer in a PMN-PT (011)/Ta/Co/Ta structure under both zero and nonzero applied electric field using polarized neutron reflectometry. Application of…

Mesoscale and Nanoscale Physics · Physics 2019-04-02 Md Mamun Al-Rashid , Alexander Grutter , Brian Kirby , Jayasimha Atulasimha

The anisotropy of magnetic emulsions induced by simultaneously acting electric and magnetic fields is theoretically and experimentally investigated. Due to the anisotropy, the electric conductivity and magnetic permeability of a magnetic…

Materials Science · Physics 2011-09-13 Yury I. Dikansky , Alexander N. Tyatyushkin , Arthur R. Zakinyan

Skyrmions, which are topologically stable magnetic structures, have manifested promising features to be used as an information carrier in new-age, non-volatile data storage devices. In this article, Co/Pt square nano-structure with Co-free…

Materials Science · Physics 2025-01-23 Tamali Mukherjee , V Satya Narayana Murthy

We report the experimental observation of collective picosecond magnetization dynamics in [Co/Pd]8 multilayers with perpendicular magnetic anisotropy. The precession frequency shows large and systematic variation from about 5 GHz to about…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 S. Pal , B. Rana , O. Hellwig , T. Thomson , A. Barman

Binary neutron star mergers can produce extreme magnetic fields, some of which can lead to strong magnetar-like remnants. While strong magnetic fields have been shown to affect the dynamics of outflows and angular momentum transport in the…

High Energy Astrophysical Phenomena · Physics 2025-08-26 Elias R. Most , Jeffrey Peterson , Luigi Scurto , Helena Pais , Veronica Dexheimer

The desired result of magnetic anisotropy investigations is the determination of value(s) of various anisotropy constant(s). This is sometimes difficult, especially when the precise knowledge of saturation magnetization is required, as it…

Classical Physics · Physics 2013-12-30 Marek W. Gutowski

Magnetic systems exhibiting exchange bias effect are being considered as materials for applications in data storage devices, sensors and biomedicine. As the size of new mag- netic devices is being continuously reduced, the influence of…

The anisotropic magnetic properties of Sr$_2$IrO$_4$ are investigated, using longitudinal and torque magnetometry. The critical scaling across $T_c$ of the longitudinal magnetization is the one expected for the 2D XY universality class.…

Strongly Correlated Electrons · Physics 2016-04-20 L. Fruchter , D. Colson , V. Brouet

We present a study on the magnetic behavior of dextran-coated magnetite nanoparticles (DM NPs) with sizes between 3 and 19 nm, synthesized by hydrothermal-assisted co-precipitation method. The decrease of saturation magnetization ($M_s$)…

Materials Science · Physics 2023-03-28 Zhila Shaterabadi , Gholamreza Nabiyouni , Gerardo F Goya , Meysam Soleymani

We have performed a systematic investigation of magnetotransport of a series of as-grown and annealed Ga1-xMnxAs samples with 0.011 <= x <= 0.09. We find that the anisotropic magnetoresistance (AMR) generally decreases with increasing…

Materials Science · Physics 2009-11-11 K. Y. Wang , K. W. Edmonds , R. P. Campion , L. X. Zhao , C. T. Foxon , B. L. Gallagher

We have measured the magnetoresistance of stretched sheets of carbon nanotubes in temperatures ranging from 2 K to 300 K and in magnetic fields up to 9 T, oriented either perpendicular or parallel to the plane of the sheets. The samples…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 E. Cimpoiasu , G. A. Levin , B. White , D. Lashmore

Using broadband ferromagnetic resonance, we measure the damping parameter of [Co(5 \r{A})/Pt(3 \r{A})]${\times 6}$ multilayers whose growth was optimized to maximize the perpendicular anisotropy. Structural characterizations indicate abrupt…

Materials Science · Physics 2018-07-16 Thibaut Devolder , S. Couet , J. Swerts , G. S. Kar

Temperature- and bias voltage-dependent transport measurements of magnetic tunnel junctions (MTJs) with perpendicularly magnetized Co/Pd electrodes are presented. Magnetization measurements of the Co/Pd multilayers are performed to…

Materials Science · Physics 2015-05-19 Zoë Kugler , Volker Drewello , Markus Schäfers , Jan Schmalhorst , Günter Reiss , Andy Thomas

The transverse anisotropy constant and the related D\"oring mass density are key parameters of the one-dimensional model to describe the motion of magnetic domain walls. So far, no general framework is available to determine these…

Mesoscale and Nanoscale Physics · Physics 2015-08-12 Felix Büttner , Benjamin Krüger , Stefan Eisebitt , Mathias Kläui

Thin magnetic multilayered films containing FePt have attracted a lot of attention recently due to their possible usage in ultra-high density magnetic storage. Although structure defects play a dramatic role in the magnetization process and…

Mesoscale and Nanoscale Physics · Physics 2016-01-27 E. M. Plotnikova , I. I. Trushkin , D. A. Lenkevich , A. L. Kotelnikov , A. Cockburn , K. A. Zvezdin

Thickness modulation at the edges of nanostructured magnetic thin films is shown to have important effects on their perpendicular magnetic anisotropy. Thin film wires with tapered edges were made from [Co/Pd]20 multilayers or L10-FePt films…

Mesoscale and Nanoscale Physics · Physics 2015-10-30 Jinshuo Zhang , Pin Ho , Jean Anne Currivan-Incorvia , Saima A. Afroz , M. Baldo , Caroline A. Ross

We systematically investigate the perpendicular magnetocrystalline anisotropy (MCA) in Co$-$Pt/Pd-based multilayers. Our magnetic measurement data shows that the asymmetric Co/Pd/Pt multilayer has a significantly larger perpendicular…