44 citations · 293 across the 13 of their papers we have counts for
14 papers
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…
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…
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…
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…
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…
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…
Rectification of radio frequency current in giant magnetoresistance spin valve
Sławomir Ziętek, Piotr Ogrodnik, Marek Frankowski +7
We report on a highly efficient spin diode effect in an exchange-biased spin-valve giant magnetoresistance (GMR) strips. In such multilayer structures, symmetry of the current dist…
Spin-torque diode radio-frequency detector with voltage tuned resonance
Witold Skowroński, Marek Frankowski, Jerzy Wrona +3
We report on a voltage tunable radio-frequency (RF) detector based on a magnetic tunnel junction (MTJ). The spin-torque diode effect is used to excite and/or detect RF oscillations…
Backhopping effect in magnetic tunnel junctions: comparison between theory and experiment
Witold Skowroński, Piotr Ogrodnik, Jerzy Wrona +5
We report on the magnetic switching and backhopping effects due to spin-transfer-torque in magnetic tunnel junctions. Experimental data on the current-induced switching in junction…
Influence of MgO tunnel barrier thickness on spin-transfer ferromagnetic resonance and torque in magnetic tunnel junctions
Witold Skowroński, Maciej Czapkiewicz, Marek Frankowski +6
Spin-transfer ferromagnetic resonance (ST-FMR) in symmetric magnetic tunnel junctions (MTJs) with a varied thickness of the MgO tunnel barrier (0.75 nm < < 1.05 nm) is st…
Magnetic field sensor with voltage-tunable sensing properties
Witold Skowroński, Piotr Wiśniowski, Tomasz Stobiecki +3
We report on a magnetic field sensor based on CoFeB/MgO/CoFeB magnetic tunnel junctions. By taking advantage of the perpendicular magnetic anisotropy of the CoFeB/MgO interface, th…
Spin transfer torque oscillator based on asymmetric magnetic tunnel junctions
Witold Skowroński, Tomasz Stobiecki, Jerzy Wrona +2
We present a study of the spin transfer torque oscillator based on CoFeB/MgO/CoFeB asymmetric magnetic tunnel junctions. We observe microwave precession in junctions with different…