44 citations · 404 across the 31 of their papers we have counts for
32 papers
Influence of Ferromagnetic Interlayer Exchange Coupling on Current-induced Magnetization Switching and Dzyaloshinskii-Moriya Interaction in Co/Pt/Co Multilayer System
Krzysztof Grochot, Piotr Ogrodnik, Jakub Mojsiejuk +4
This paper investigates the relationship among interlayer exchange coupling (IEC), Dzyaloshinskii-Moriya interaction (DMI), and multilevel magnetization switching within a Co/Pt/Co…
A comprehensive simulation package for analysis of multilayer spintronic devices
Jakub Mojsiejuk, Sławomir Ziętek, Krzysztof Grochot +2
We present cmtj - a comprehensive simulation package that allows large-scale macrospin simulations for a variety of multilayer spintronics devices. Apart from conventional static s…
Numerical Model Of Harmonic Hall Voltage Detection For Spintronic Devices
Sławomir Ziętek, Jakub Mojsiejuk, Krzysztof Grochot +3
We present a numerical macrospin model for harmonic voltage detection in multilayer spintronic devices. The core of the computational backend is based on the Landau-Lifshitz-Gilber…
Angular harmonic Hall voltage and magnetoresistance measurements of Pt/FeCoB and Pt-Ti/FeCoB bilayers for spin Hall conductivity determination
Witold Skowroński, Krzysztof Grochot, Piotr Rzeszut +8
Materials with significant spin-orbit coupling enable efficient spin-to-charge interconversion, which can be utilized in novel spin electronic devices. A number of elements, mainly…
Study of Spin-Orbit Interactions and Interlayer Ferromagnetic Coupling in Co/Pt/Co Trilayers in Wide Range of Heavy Metal Thickness
Piotr Ogrodnik, Krzysztof Grochot, Łukasz Karwacki +6
The spin-orbit torque, a torque induced by a charge current flowing through the heavy-metal conducting layer with strong spin-orbit interactions, provides an efficient way to contr…
Multi-state MRAM cells for hardware neuromorphic computing
Piotr Rzeszut, Jakub Chęciński, Ireneusz Brzozowski +3
Magnetic tunnel junctions (MTJ) have been successfully applied in various sensing application and digital information storage technologies. Currently, a number of new potential app…
Current-induced magnetization switching of exchange-biased NiO heterostructures characterized by spin-orbit torque
Krzysztof Grochot, Łukasz Karwacki, Stanisław Łazarski +7
In this work, we study magnetization switching induced by spin-orbit torque in W(Pt)/Co/NiO heterostructures with variable thickness of heavy-metal layers W and Pt, perpendicularly…
Spin Hall Magnetoresistance in Metallic Bilayers with In-plane Magnetized Ferromagnets
Łukasz Karwacki, Krzysztof Grochot, Stanisław Łazarski +6
We revisit the theory and experiment on spin Hall magnetoresistance (SMR) in bilayers consisting of a heavy metal (H) coupled to in-plane magnetized ferromagnetic metal (F), and de…
Structural, magnetostatic and magnetodynamic studies of Co/Mo-based uncompensated synthetic antiferromagnets
Piotr Ogrodnik, Jarosław Kanak, Maciej Czapkiewicz +7
In this work, we comprehensively investigate and discuss the structural, magnetostatic, dynamic, and magnetoresistive properties of epitaxial Co/Mo superlattices. The magnetization…
Multi-bit MRAM storage cells utilizing serially connected perpendicular magnetic tunnel junctions
Piotr Rzeszut, Witold Skowroński, Sławomir Ziętek +2
Serial connection of multiple memory cells using perpendicular magnetic tunnel junctions (pMTJ) is proposed as a way to increase magnetic random access memory (MRAM) storage densit…
Field-free spin-orbit torque switching in Co/Pt/Co multilayer with mixed magnetic anisotropies
Stanisław Łazarski, Witold Skowroński, Jarosław Kanak +5
Spin-orbit-torque (SOT) induced magnetization switching in Co/Pt/Co trilayer, with two Co layers exhibiting magnetization easy axes orthogonal to each other is investigated. Pt lay…
CoFeB/MgO/CoFeB structures with orthogonal easy axes: perpendicular anisotropy and damping
H. Głowiński, A. Żywczak, J. Wrona +4
We report on the Gilbert damping parameter , the effective magnetization , and the asymmetry of the -factor in bottom-CoFeB(0.93~nm)/MgO(0.90--1.25~nm)/CoFeB(1.31~…
Characterization of spin wave propagation in (111) YIG thin films with large anisotropy
Adam Krysztofik, Hubert Głowiński, Piotr Kuświk +6
We report on long-range spin wave (SW) propagation in nanometer-thick yttrium iron garnet (YIG) film with an ultralow Gilbert damping. The knowledge of a wavenumber value $|\vec{k}…
Determination of spin Hall angle in heavy metal/CoFeB-based heterostructures with interfacial spin-orbit fields
Witold Skowroński, Łukasz Karwacki, Sławomir Ziętek +7
Magnetization dynamics in W/CoFeB, CoFeB/Pt and W/CoFeB/Pt multilayers was investigated using spin-orbit-torque ferromagnetic resonance (SOT-FMR) technique. An analytical model bas…
Biaxial magnetic field setup for angular magnetic measurements of thin films and spintronic nanodevices
Piotr Rzeszut, Witold Skowroński, Sławomir Ziętek +2
The biaxial magnetic-field setup for angular magnetic measurements of thin film and spintronic devices is designed and presented. The setup allows for application of the in-plane m…
Antiferromagnetic nano-oscillator in external magnetic fields
Jakub Chęciński, Marek Frankowski, Tomasz Stobiecki
We describe the dynamics of an antiferromagnetic nano-oscillator in an external magnetic field of any given time distribution. The oscillator is powered by a spin current originati…
Field- and temperature-modulated spin-diode effect in a GMR nanowire with dipolar coupling
Piotr Ogrodnik, Tomasz Stobiecki, Józef Barnaś +4
An analytical model of the spin-diode effect induced by resonant spin-transfer torque in a ferromagnetic bilayer with strong dipolar coupling provides the resonance frequencies and…
Simultaneous readout of two adjacent bit tracks with a spin-torque oscillator
Jakub Chęciński, Marek Frankowski, Tomasz Stobiecki
We propose a novel setup for a spin-torque oscillator reader in magnetic hard disk drive technology. Two adjacent bit tracks are to be read simultaneously, leading to high data tra…
Influence of intermixing at the Ta/CoFeB interface on spin Hall angle in Ta/CoFeB/MgO heterostructures
Monika Cecot, Lukasz Karwacki, Witold Skowronski +7
We investigate the spin Hall effect in perpendicularly magnetized Ta/Co40Fe40B20/MgO trilayers with Ta underlayers thicker than the spin diffusion length. The crystallographic stru…
Electric-field tunable spin waves in PMN-PT/NiFe heterostructure: experiment and micromagnetic simulations
Slawomir Zietek, Jakub Checinski, Marek Frankowski +2
We present a comprehensive theoretical and experimental study of voltage-controlled standing spin waves resonance (SSWR) in PMN-PT/NiFe multiferroic heterostructures patterned into…
Electric-field tunable spin diode FMR in patterned PMN-PT/NiFe structures
Sławomir Ziętek, Piotr Ogrodnik, Witold Skowroński +4
Dynamic properties of NiFe thin films on PMN-PT piezoelectric substrate are investigated using the spin-diode method. Ferromagnetic resonance (FMR) spectra of microstrips with vary…
Temperature dependence of spin-orbit torques in W/CoFeB bilayers
Witold Skowronski, Monika Cecot, Jaroslaw Kanak +7
We report on the temperature and layer thickness variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements reveal dissimila…
Buffer influence on magnetic dead layer, critical current and thermal stability in magnetic tunnel junctions with perpendicular magnetic anisotropy
Marek Frankowski, Antoni Żywczak, Maciej Czapkiewicz +11
We present a thorough research on Ta/Ru-based buffers and their influence on features crucial from the point of view of applications of MTJs, such as critical switching current and…
Towards wafer scale inductive characterization of spin transfer torque critical current density of magnetic tunnel junction stacks
Sibylle Sievers, Niklas Liebing, Santiago Serrano-Guisan +12
We explore the prospects of wafer scale inductive probing of the critical current density for spin transfer torque switching of a CoFeB/MgO/CoFeB magnetic tunnel junction…