Explanipedia

Enhanced laser-induced single-cycle terahertz generation in a spintronic emitter with a gradient interface Open

L. A. Shelukhin, Anna Kuzikova, А. V. Telegin, V. D. Bessonov, Alexey V. Ognev , et al. · 2025

The development of spintronic emitters of broadband terahertz (THz) pulses relies on designing heterostructures in which the processes of laser-driven spin current generation and subsequent spin-to-charge current conversion are the most ef…

Interface effect on antisymmetric exchange interaction in nanostructures Open

Mariya S. Murzina, А. V. Telegin, Marina V. Makarova, Svyatoslav A. Getmanov, Jae‐Gwan Park , et al. · 2024

The work is dedicated to the study of the peculiarities of spin wave dispersion in metallic magnetic nanostructures of heavy metal/ferromagnet based on PtCo compounds using Mandelstam-Brillouin light scattering techniques. Structural and m…

Spin-Orbit Torque-Assisted Detection of the Canted Magnetization Phase in a CoTb-Based Ferrimagnet Open

Maxim E. Stebliy, Zhimba Zh. Namsaraev, Michail A. Bazrov, Michail E. Letushev, Valerii A. Antonov , et al. · 2024

Ferrimagnets have the potential to play a key role in spintronics due to their high stability, low energy consumption, and rapid magnetic state switching. These characteristics are typically observed in ferrimagnetic materials near magneti…

Thermal Annealing Driven Enhancement of Perpendicular Magnetic Anisotropy and the Interfacial Dzyaloshinskii–Moriya Interaction in Ultrathin Ru/Co/W/Ru Films Open

Aleksei Yu. Samardak, Alexander Kolesnikov, Maxim E. Stebliy, А.В. Герасименко, А. V. Sadovnikov , et al. · 2023

Spin-related effects discovered in ultrathin magnetic films generally have an interfacial nature. The quality of interfaces between a heavy metal and a ferromagnet is the main driver of surface anisotropy, antisymmetric exchange, chiral da…

Electronic Structure of NdFeCoB Oxide Magnetic Particles Studied by DFT Calculations and XPS Open

Vadim Yu. Samardak, A. A. Komissarov, A. A. Dotsenko, V. V. Korochentsev, Ivan S. Osmushko , et al. · 2023

Neodymium-iron-boron magnetic oxide powders synthesized by sol–gel Pechini method were studied by using X-ray photoelectron spectroscopy (XPS) and quantum chemical modeling. The powder structure was examined by using X-ray diffraction (XRD…

Microstructure, ion adsorption and magnetic behavior of mesoporous γ-Fe<sub>2</sub>O<sub>3</sub> ferrite nanoparticles Open

Farzad Nasirpouri, Sohiela Fallah, Ghader Ahmadpour, Elnaz Moslehifard, Aleksei Yu. Samardak , et al. · 2023

Mesoporous γ-Fe 2 O 3 ferrite nanoparticles prepared in the presence of cetyltrimethylammonium bromide micellular templates.

Interwire and Intrawire Magnetostatic Interactions in Fe‐Au Barcode Nanowires with Alternating Ferromagnetically Strong and Weak Segments (Small 47/2022) Open

Aleksei Yu. Samardak, Yoo Sang Jeon, Vadim Yu. Samardak, A. G. Kozlov, Kirill A. Rogachev , et al. · 2022

Magnetic Memory Cells The dense packing of magnetic memory cells under the influence of magnetostatic fields can change the overall ability of the device to store information. In article number 2203555, Young Keun Kim, Alexander S. Samarda…

Interwire and Intrawire Magnetostatic Interactions in Fe-Au Barcode Nanowires with Alternating Ferromagnetically Strong and Weak Segments Open

Aleksei Yu. Samardak, Yoo Sang Jeon, Vadim Yu. Samardak, A. G. Kozlov, Kirill A. Rogachev , et al. · 2022

Metallic barcode nanowires (BNWs) composed of repeating heterogeneous segments fabricated by template-assisted electrodeposition can offer extended functionality in magnetic, electrical, mechanical, and biomedical applications. We can cons…

Field-Free Spin–Orbit Torque Switching Enabled by the Interlayer Dzyaloshinskii–Moriya Interaction Open

Wenqing He, Caihua Wan, Cuixiu Zheng, Yizhan Wang, Xiao Wang , et al. · 2022

Perpendicularly magnetized structures that are switchable using a spin current under field-free conditions can potentially be applied in spin-orbit torque magnetic random-access memory (SOT-MRAM). Several structures have been developed; ho…

Field-free superconducting diode effect in noncentrosymmetric superconductor/ferromagnet multilayers Open

Hideki Narita, Jun Ishizuka, Ryo Kawarazaki, Daisuke Kan, Yoichi Shiota , et al. · 2022

Predicted universality class of step bunching found on DC-heated Si(111) surfaces Open

Alexey M. Kozlov, Alexander S. Samardak, Nikolay N. Chernousov, Hristina Popova, Magdalena A. Załuska–Kotur , et al. · 2022

Concerted experimental and numerical studies of step bunching on vicinal crystal surfaces resulting from step-down electromigration of partially charged adatoms, confirmed the theoretical prediction of scaling dependence of the minimal bun…

Compositional Gradient Induced Enhancement of Dzyaloshinskii–Moriya Interaction in Pt/Co/Ta Heterostructures Modulated by Pt–Co Alloy Intralayers Open

Junho Park, Tae-Hyun Kim, Gyu Won Kim, Vladimir O. Bessonov, А. V. Telegin , et al. · 2022

FORC-Diagram Analysis for a Step-like Magnetization Reversal in Nanopatterned Stripe Array Open

V. K. Belyaev, Dmitry Murzin, J.C. Martínez-García, Montserrat Rivas, Nikolay Andreev , et al. · 2021

The fabrication approach of a magnonic crystal with a step-like hysteresis behavior based on a uniform non-monotonous iron layer made by shadow deposition on a preconfigured substrate is reported. The origin of the step-like hysteresis loo…

Ruderman–Kittel–Kasuya–Yosida-type interfacial Dzyaloshinskii–Moriya interaction in heavy metal/ferromagnet heterostructures Open

Tae-Hyun Kim, In Ho, Yong Jin Kim, Gyu Won Kim, A. A. Stashkevich , et al. · 2021

Abstract P-8:Fe2O3-SiO2-Au Core-Shell Nanoparticles for Theranostics Open

Vadim Yu. Samardak, Mukhamad Sobirov, Aleksei Ognev, Alexander S. Samardak, Thomas Myeongseok Koo , et al. · 2021

Background: Core-shell nanoparticles (NPs) Fe3O4-SiO2 covered with Au grains due to their unique magnetic, biological, optical and mechanical properties are promising nanostructured material especially in biomedical field. Magnetic core al…

Abstract P-7: NdFeCo-based Nanoparticles for Biomedical Applications Open

Vadim Yu. Samardak, S Azon, Aleksei Yu. Samardak, Е. К. Папынов, Alexander S. Samardak , et al. · 2021

Background: The multifunctional nanoparticles can be promising antitumor materials. The results of a study of synthesized NdFeCoB oxide nanoparticles (NPs) as a basis for drug transportation systems are presented. In the next step, the NPs…

Continuous nucleation switching driven by spin-orbit torques Open

Caihua Wan, Maxim E. Stebliy, X. Wang, Guoqiang Yu, Xiufeng Han , et al. · 2020

Continuous switching driven by spin-orbit torque (SOT) is preferred to realize neuromorphic computing in a spintronic manner. Here we have applied focused ion beam (FIB) to selectively illuminate patterned regions in a Pt/Co/MgO strip with…

Composition-driven crystal structure transformation and magnetic properties of electrodeposited Co–W alloy nanowires Open

Eunmin Yoo, Aleksei Yu. Samardak, Yoo Sang Jeon, Alexander S. Samardak, Alexey V. Ognev , et al. · 2020

The cobalt (Co)–tungsten (W) alloys exhibit unique combinations of mechanical and magnetic properties, biocompatibility, resistance against corrosion, wear, and high-temperature, which makes them desirable materials for various practical a…

Photovoltage detection of spin excitation of a ferromagnetic stripe and disk at low temperature Open

Najla Khaled Almulhem, Maxim E. Stebliy, J.C. Portal, Alexander S. Samardak, Harvey E. Beere , et al. · 2020

Photovoltage spectroscopy is a beneficial technique to investigate the dynamic properties of the spin excitations of ferromagnetic elements fabricated at the surface of a GaAs/Al0.33Ga0.67As heterojunction. This method is of particular int…

Damping in Ru/Co-based multilayer films with large Dzyaloshinskii-Moriya interaction Open

T. Ščepka, P. Neilinger, Alexander S. Samardak, Alexander Kolesnikov, Alexey V. Ognev , et al. · 2019

Recent development of the magnetic material engineering led to achievement of the systems with a high interfacial Dzyaloshinskii-Moriya interaction (DMI). As a result, the formation of non-collinear magnetic soliton states or nonreciprocal…

Crystal texture-dependent magnetic and magnetotransport properties of half-metallic Fe3O4 films grown on oxidized Si substrates by reactive deposition Open

В. В. Балашев, K. S. Ermakov, Aleksei Yu. Samardak, Alexey V. Ognev, Alexander S. Samardak , et al. · 2019

Magnetoresistive Sensor Development Roadmap (Non-Recording Applications) Open

Chao Zheng, Ke Zhu, Susana Cardoso, Jen-Yuan Chang, Joseph E. Davies , et al. · 2019

Magnetoresistive (MR) sensors have been identified as promising candidates for the development of high-performance magnetometers due to their high sensitivity, low cost, low power consumption, and small size. The rapid advance of MR sensor…

Skyrmionium – high velocity without the skyrmion Hall effect Open

Alexander Kolesnikov, Maxim E. Stebliy, Alexander S. Samardak, Alexey V. Ognev · 2018

Nanoscale control of perpendicular magnetic anisotropy, interfacial\n Dzyaloshinskii-Moriya interaction and skyrmions in the\n inversion-symmetry-broken Ru/Co/W/Ru films Open

А. И. Колесников, Alexey V. Ognev, Maxim E. Stebliy, Ludmila A. Chebotkevich, А.В. Герасименко , et al. · 2017

An enhancement of the spin-orbit effects arising on an interface between a\nferromagnet (FM) and a heavy metal (HM) is possible through the strong breaking\nof the structural inversion symmetry in the layered films. Here we show that\nthe …

Nanoscale control of perpendicular magnetic anisotropy, interfacial Dzyaloshinskii-Moriya interaction and skyrmions in the inversion-symmetry-broken Ru/Co/W/Ru films Open

Alexander Kolesnikov, Alexey V. Ognev, Maxim E. Stebliy, Ludmila A. Chebotkevich, А.В. Герасименко , et al. · 2017

An enhancement of the spin-orbit effects arising on an interface between a ferromagnet (FM) and a heavy metal (HM) is possible through the strong breaking of the structural inversion symmetry in the layered films. Here we show that the int…

Vortex dynamics and frequency splitting in vertically coupled nanomagnets Open

Maxim E. Stebliy, S. Jain, Alexander Kolesnikov, Alexey V. Ognev, Alexander S. Samardak , et al. · 2017

Manipulation of magnetic vortex parameters in disk-on-disk nanostructures with various geometry Open

Stebliy, Колесников, Ognev, Alexander S. Samardak, Ludmila A. Chebotkevich · 2016

Fabrication of high-resolution nanostructures of complex geometry by the single-spot nanolithography method Open

Alexander S. Samardak, M. V. Anisimova, Samardak, Alexey V. Ognev · 2016

Fabrication of high-resolution nanostructures of complex geometry by the single-spot nanolithography method Open

Alexander S. Samardak, M. V. Anisimova, Aleksei Yu. Samardak, Alexey V. Ognev · 2015

The paper presents a method for the high-resolution production of polymer nanopatterns with controllable geometrical parameters by means of a single-spot electron-beam lithography technique. The essence of the method entails the overexposu…

Manipulation of magnetic vortex parameters in disk-on-disk nanostructures with various geometry Open

Maxim E. Stebliy, Alexander Kolesnikov, Alexey V. Ognev, Alexander S. Samardak, Ludmila A. Chebotkevich · 2015

Magnetic nanostructures in the form of a sandwich consisting of two permalloy (Py) disks with diameters of 600 and 200 nm separated by a nonmagnetic interlayer are studied. Magnetization reversal of the disk-on-disk nanostructures depends …

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