Results 71 to 80 of about 1,236 (182)

Radiation Resilient Synthetic Antiferromagnets‐Based Neuromorphic Device for Sea Surface Temperature Reconstruction

Advanced Science, EarlyView.
By leveraging strong antiferromagnetic coupling, radiation‐tolerant synthetic antiferromagnetic synaptic devices are developed. Their intrinsic nonlinearity emulates neuronal activation, while linear and symmetric conductance modulation mimics synaptic plasticity.
Mingxu Song, Jiahao Liu, Ruisheng Hu, Teng Xu, Aihua Tang, Zhihong Zhu   +5 more
wiley   +1 more source

Efficient Current‐Driven Perpendicular Magnetization Switching Through the Synergy of the Orbital and Spin Hall Effects

Advanced Science, EarlyView.
NiNb alloys enable efficient charge‐to‐spin conversion by combining the spin Hall effect of nickel with the orbital Hall effect of niobium. Composition tuning yields spin‐torque efficiencies of −1.4 to −1.7 and a non‐monotonic efficiency‐resistivity relationship, revealing orbital‐spin synergy beyond conventional spin Hall materials and offering a ...
Chuangwen Wu, Jing Zhou, Yibo Fan, Jiali Chen, Rongce Sun, Zonghao Deng, Zengxin Wei, Chuantong Ren, Xingen Zheng, Zhaowei Zhang, Jing Zhang, Jingfeng Li, Jinkui Zhao, Wei Jiang, Haibo Ke, Hao Wu, Weihua Wang   +16 more
wiley   +1 more source

Beyond a phenomenological description of magnetostriction

Nature Communications, 2018
Although magnetostriction is universal in magnetic materials, understanding its microscopic origin remains challenging. Here the authors use X-ray and ultrafast electron diffraction to separate the material’s sub-picosecond spin and lattice responses and
A. H. Reid, X. Shen, P. Maldonado, T. Chase, E. Jal, P. W. Granitzka, K. Carva, R. K. Li, J. Li, L. Wu, T. Vecchione, T. Liu, Z. Chen, D. J. Higley, N. Hartmann, R. Coffee, J. Wu, G. L. Dakovski, W. F. Schlotter, H. Ohldag, Y. K. Takahashi, V. Mehta, O. Hellwig, A. Fry, Y. Zhu, J. Cao, E. E. Fullerton, J. Stöhr, P. M. Oppeneer, X. J. Wang, H. A. Dürr   +30 more
doaj   +1 more source

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

Wavelength scaling of ultrafast demagnetization in Co/Pt multilayers [PDF]

, 2020
International audienceUltrafast demagnetization, a phenomenon of utmost interest in the context of optical control of magnetically recorded data, has been extensively studied in a variety of different materials.
Lüning, Jan, Cardin, Vincent; orcid:, Vodungbo, Boris, Jal, Emmanuelle; orcid:, Cardin, Vincent, Légaré, François, Varin, Charles, Balciunas, Tadas, Ibrahim, Heide, Jal, Emmanuelle, Légaré, Katherine, Ibrahim, Heide; orcid:, Baltuska, Andrius, Jaouen, Nicolas   +13 more
core   +1 more source

Ultrafast Transitions in X‐Ray Irradiated Solids

Contributions to Plasma Physics, EarlyView.
ABSTRACT In this review, we present current developments on modeling ultrafast transitions in solids triggered by intense, atto‐ to femtosecond pulses from X‐ray free electron lasers. This specific irradiation regime requires dedicated simulation tools based on theoretical and computational methods, involving the elements of classical and quantum ...
Sebastião Antunes, Konrad J. Kapcia, Vladimir Lipp, Beata Ziaja   +3 more
wiley   +1 more source

Universal field-tunable terahertz emission by ultrafast photoinduced demagnetization in Fe, Ni, and Co ferromagnetic films [PDF]

, 2020
We report a universal terahertz (THz) emission behavior from simple Ni, Fe, and Co metallic ferromagnetic films, triggered by the femtosecond laser pulse and subsequent photoinduced demagnetization on an ultrafast time scale.
Park, Seung-Young, Kim, Dong-Hyun, Lee, Sang-Hyuk, Kim, Seongheun, Choi, Yeon Suk, Kim, Dong Eon, Shim, Je-Ho, Park, Jaehun, Kim, Hyun-Joong, Hong, Jung-Il, Huang, Lin, Kim, Seon-Dae, Shin, Hee Jun   +12 more
core   +1 more source

Photon energy-dependent ultrafast magnetization dynamics in magnetic heterostructures

Communications Materials
Laser-induced ultrafast demagnetization has traditionally been understood as a process in which photon absorption excites nonequilibrium electrons, leading to demagnetization followed by magnetization recovery.
In Cheol Yu, San Ko, Won Tae Kim, Byong-Guk Park, Byoung S. Ham, Kab-Jin Kim, Fabian Rotermund   +6 more
doaj   +1 more source

Imaging ultrafast multiferroic dynamics in BiFeO3 [PDF]

APL Materials
The sub-picosecond control of ferroic orders represents a key frontier in the development of next-generation ultrafast technologies. Among the various prototypical systems, magnetoelectric multiferroic materials, exhibiting coupled ferroelectric and ...
A. Levchuk, S. Fusil, T. Chirac, V. Garcia, M. Viret, J.-Y. Chauleau   +5 more
doaj   +1 more source

Manipulation of Magnetization Switching by Ultrafast Spin‐Polarized Hot‐Electron Transport in Synthetic Antiferromagnet

Advanced Electronic Materials, 2023
Uncovering the physical mechanisms that govern ultrafast charge and spin dynamics is becoming indispensable both at the fundamental level and to develop future spin‐based electronics. Recently it has been shown that femtosecond pulsed‐laser excitation of
Meiyang Ma, Zhuoyi Li, Xuezhong Ruan, Jing Wu, Ruifeng Wang, Tianyu Liu, Jun Du, Xianyang Lu, Yongbing Xu   +8 more
doaj   +1 more source