232 citations · 895 across the 37 of their papers we have counts for
37 papers
Reversible magneto ionics in crystallized W Co20Fe60B20 MgO HfO2 ultra-thin films with perpendicular magnetic anisotropy
Song Chen, Elmer Monteblanco, Benjamin Borie +2
We have investigated electric field (E-field) induced modulation of perpendicular magnetic anisotropy (PMA) in both amorphous and crystalline W/CoFeB/MgO/HfO2 ultra-thin films. We…
Tuning of perpendicular magnetic anisotropy in Bi-substituted yttrium iron garnet films by He ion irradiation
Sreeveni Das, Rhodri Mansell, Lukáš Flajšman +6
We report the continuous tuning of magnetic anisotropy in perpendicularly magnetized bismuth-substituted yttrium iron garnet (Bi-YIG) films via He ion irradiation. Our findings…
Control of the magnetic anisotropy in multi-repeat Pt/Co/Al heterostructures using magneto-ionic gating
Tristan da Câmara Santa Clara Gomes, Tanvi Bhatnagar-Schöffmann, Sachin Krishnia +14
Controlling magnetic properties through the application of an electric field is a significant challenge in modern nanomagnetism. In this study, we investigate the magneto-ionic con…
Earthquake-like dynamics in ultrathin magnetic film
Gianfranco Durin, Vincenzo Maria Schimmenti, Marco Baiesi +6
We study the motion of a domain wall on an ultrathin magnetic film using the magneto-optical Kerr effect (MOKE). At tiny magnetic fields, the wall creeps only via thermal activatio…
Control of domain wall and pinning disorder interaction by light He ion irradiation in Pt/Co/AlOx ultrathin films
Cristina Balan, Johannes W. van der Jagt, Jose Peña Garcia +6
We have studied the effect of He irradiation on the dynamics of chiral domain walls in Pt/Co/AlOx trilayers in the creep regime. The irradiation leads to a strong decrease of t…
Improving Néel domain walls dynamics and skyrmion stability using He ion irradiation
Cristina Balan, Johannes W. van der Jagt, Aymen Fassatoui +8
Magnetization reversal and domain wall dynamics in Pt/Co/AlOx trilayers have been tuned by He+ ion irradiation. Fluences up to 1.5x10 ions/cm strongly decrease the perpe…
Optimization of Permalloy properties for magnetic field sensors using He irradiation
Giovanni Masciocchi, Johannes Wilhelmus van der Jagt, Maria-Andromachi Syskaki +7
Permalloy, despite being a widely utilized soft magnetic material, still calls for optimization in terms of magnetic softness and magnetostriction for its use in magnetoresistive s…
Revealing nanoscale disorder in W/CoFeB/MgO ultra-thin films using domain wall motion
Johannes Wilhelmus van der Jagt, Vincent Jeudy, André Thiaville +11
Disorder in ultra-thin magnetic films can significantly hinder domain wall motion. One of the main issues on the path towards efficient domain wall based devices remains the charac…
Enhancing All-Optical Switching of Magnetization by He Ion Irradiation
Pingzhi Li, Johannes W. van der Jagt, Maarten Beens +8
All-optical switching (AOS) of magnetization by a single femtosecond laser pulse in Co/Gd based synthetic ferrimagnets is the fastest magnetization switching process. On the other…
Ab-initio study of magneto-ionic mechanisms in ferromagnet/oxide multilayers
Adriano Di Pietro, Rohit Pachat, Liza Herrera Diez +3
The application of gate voltages in heavy metal/ferromagnet/Oxide multilayer stacks has been identified as one possible candidate to manipulate their anisotropy at will. However, t…
Ion irradiation and implantation modifications of magneto-ionically induced exchange bias in Gd/NiCoO
Christopher J. Jensen, Alberto Quintana, Mamour Sall +5
Magneto-ionic control of magnetic properties through ionic migration has shown promise in enabling new functionalities in energy-efficient spintronic devices. In this work, we demo…
Forecasting the outcome of spintronic experiments with Neural Ordinary Differential Equations
Xing Chen, Flavio Abreu Araujo, Mathieu Riou +6
Deep learning has an increasing impact to assist research, allowing, for example, the discovery of novel materials. Until now, however, these artificial intelligence techniques hav…
Multiple magneto-ionic regimes in Ta/CoFeB/HfO
R. Pachat, D. Ourdani, J. W. van der Jagt +11
In Ta/CoFeB/HfO2 stacks a gate voltage drives, in a nonvolatile way, the system from an underoxidized state exhibiting in-plane anisotropy (IPA) to an optimum oxidation level resul…
Tailoring interfacial effect in multilayers with Dzyaloshinskii-Moriya interaction by helium ion irradiation
A. Sud, S. Tacchi, D. Sagkovits +13
We show a method to control magnetic interfacial effects in multilayers with Dzyaloshinskii-Moriya interaction (DMI) using helium (He) ion irradiation. We report results from…
Bloch-to-Néel domain wall transition evinced through morphology of magnetic bubble expansion in Ta/CoFeB/MgO layers
Arianna Casiraghi, Alessandro Magni, Liza Herrera Diez +5
Ta/CoFeB/MgO trilayers with perpendicular magnetic anisotropy are often characterised by vanishing or modest values of interfacial Dzyaloshinskii-Moriya interaction (DMI), which re…
Effective field analysis using the full angular spin-orbit torque magnetometry dependence
Tomek Schulz, Kyujoon Lee, Benjamin Krüger +7
Spin-orbit torques promise ultra-efficient magnetization switching used for advanced devices based on emergent quasi-particles such as domain walls and skyrmions. Recently, the spi…
Domain-wall motion induced by spin transfer torque delivered by helicity-dependent femtosecond laser
Boyu Zhang, Yong Xu, Weisheng Zhao +8
In magnetic wires with perpendicular anisotropy, moving domain with only current or only circularly polarized light requires a high power. Here, we propose to reduce it by using bo…
Low spin-polarization in the heavy metal\ferromagnet structures detected through the domain wall motion by synchronized magnetic field and current
Xueying Zhang, Nicolas Vernier, Laurent Vila +9
CoFeB is a very soft material, in which Domain Wall (DW) can be moved easily under a weak magnetic field. However, it is very difficult to move DWs in Ta\CoFeB\MgO nanowires with i…
Tuning spin torque nano-oscillator nonlinearity using He+ irradiation
Sheng Jiang, Roman Khymyn, Sunjae Chung +6
We use He irradiation to tune the nonlinearity, , of all-perpendicular spin-torque nano-oscillators (STNOs) using the He fluence-dependent perpendicular magnet…
Energy-efficient domain wall motion governed by the interplay of helicity-dependent optical effect and spin-orbit torque
Boyu Zhang, Yong Xu, Weisheng Zhao +6
Spin-orbit torque provides a powerful means of manipulating domain walls along magnetic wires. However, the current density required for domain wall motion is still too high to rea…
The magnetic origin of the metal-insulator transition in V2O3: Mott meets Slater
J. Trastoy, A. Camjayi, J. del Valle +6
Despite decades of experimental and theoretical efforts, the origin of metal-insulator transitions (MIT) in strongly-correlated materials is one of the main longstanding problems i…
Study of energetics of 360° domain walls through annihilation
G. V. Karnad, E. Martinez, M. Voto +4
The Dzyaloshinskii-Moriya interaction (DMI) causes domain walls in perpendicular magnetized systems to adopt a homochiral configuration by winding in the same direction for both Up…
Tuning the magnetodynamic properties of all-perpendicular spin valves using He+ irradiation
S. Jiang, S. Chung, L. Herrera Diez +4
Using He+ ion irradiation, we demonstrate how the magnetodynamic properties of both ferromagnetic layers in all-perpendicular [Co/Pd]/Cu/[Co/Ni] spin valves can be tuned by varying…
Magnetoresistive sensors based on the elasticity of domain walls
Xueying Zhang, Nicolas Vernier, Zhiqiang Cao +4
Magnetic sensors based on the magnetoresistance effects have a promising application prospect due to their excellent sensitivity and advantages in terms of the integration. However…