Results 131 to 140 of about 21,402 (315)

Magnetoelectric Nanoparticle‐Based Wireless Brain–Computer Interface: Underlying Physics and Projected Technology Pathway

Advanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) enable fully wireless, minutely invasive neuromodulation, and potentially neural recording, by converting magnetic into electric and, conversely, electric into magnetic fields, respectively, at high spatiotemporal resolution.
Elric Zhang, Max Shotbolt, Mostafa Abdel‐Mottaleb, Shawnus Chen, Victoria Andre, Jieyuan Tian, Jonathan Shulgach, Max Murphy, Brian Noga, Ping Liang, Darcy Griffin, Douglas Weber, Marta Pardo, Salvador Pane, Sakhrat Khizroev   +14 more
wiley   +1 more source

Enhanced coercivity of exchange-biased Fe/MnPd bilayers [PDF]

, 1999
We present detailed studies of the enhanced coercivity of exchange-bias bilayer Fe/MnPd, both experimentally and theoretically. We have demonstrated that the existence of large higher-order anisotropies due to exchange coupling between different Fe and ...
Roos, B., Demokritov, Sergey O., Tang, Y. J., Wang, Y. J., Mewes, T., Hillebrands, Burkard   +5 more
core  

Engineering of Crystal and Domain Structures in Epitaxial Y:HfO2 Thin Films by YSZ Substrate Miscut

Advanced Science, EarlyView.
We investigate how YSZ substrate miscut influences crystal structure and domain formation in epitaxial Y‐doped HfO2 thin films. Using magnetron sputtering, high‐resolution X‐ray diffraction, atomic‐resolution scanning transmission electron microscopy, and first‐principles calculations, we systematically examine the characteristics of thickness‐ and ...
Jun Young Lee, Hyung‐Jin Choi, Kun Hee Ye, Haneul Choi, Byeong‐hyeon Lee, Min‐Seok Kim, Dong‐Hun Han, June Hyuk Lee, Sung Ok Won, Tae Heon Kim, Hye Jung Chang, Jung‐Hae Choi, Seung‐Hyub Baek   +12 more
wiley   +1 more source

Direct chemical synthesis of well dispersed L1(0)-FePt nanoparticles with tunable size and coercivity

, 2016
We report a simple, green, one-step solid-phase approach to synthesize well-dispersed single-crystal L1(0)-FePt nanoparticles with coercivity of more than 20 kOe.
Xia, Weixing, Zheng, Qiang, Zhang, Jian, Du, Juan, Bian, Baoru, Liu, J. Ping, He, Jianghai, Yan, Aru   +7 more
core  

Coercivity enhancement in anisotropic Pr13Fe79.4B7Nb0.3Ga0.3 powders

, 2012
Highly anisotropic Pr13Fe79.4B7Nb0.3Ga0.3 powders with a residual magnetization of 1.4 T, an intrinsic coercivity of 10 kOe, and a maximum energy product of 32 MGOe were obtained by a modified hydrogenation disproportionation desorption recombination ...
Yingchang Yang, Liu, Shunquan, Jinbo Yang, Xing, Meiying, Zhong Lin, Lin, Zhong, Meiying Xing, Shunquan Liu, Changsheng Wang, Wang, Changsheng, Yang, Jinbo, Han, Jingzhi, Yan Zhang, Yang, Yingchang, Zhang, Yan, Jingzhi Han   +15 more
core   +1 more source

Ferroelectric Devices for In‐Memory and In‐Sensor Computing

Advanced Science, EarlyView.
Inspired by biological systems, in‐memory and in‐sensor computing overcome von Neumann bottlenecks. Ferroelectric devices can mimic synaptic functions and sense stimuli like light or force, therefore are ideal for these paradigms. This review introduces the ferroelectric devices applied for in‐memory and in‐sensor computing, covering their structures ...
Hong Fang, Ronghuan Xie, Qiang Cao, Shishen Yan, Xiaolin Wang, Limei Zheng   +5 more
wiley   +1 more source

Unilateral problems with degenerate coercivity

, 1999
In this note we prove some existence and regularity results for unilateral problems with degenerate ...
Cirmi, G. Rita, BOCCARDO, Lucio, G. Rita Cirmi, Lucio Boccardo, R. CIRMI   +4 more
core  

Triple‐Mode Ferroelectric Thin‐Film Transistor for Hybrid Electrical–Optical Reservoir Computing

Advanced Science, EarlyView.
A triple‐mode ferroelectric thin‐film transistor is developed by integrating Si3N4/HZO/IGZO layers to realize three independent memory modes: electric long‐term, electric short‐term, and optical short‐term. This single‐device architecture functions as both a reservoir and readout layer, achieving 92.43% MNIST accuracy. It offers a fully hardware‐based,
Hyeonho Lee, Seungjun Lee, Tae‐Hyeon Kim, Yonghee Jeong, Gwangmin An, Minsu Ko, Junsu Yu, Heung Soo Kim, Yang Chai, Sungjun Kim   +9 more
wiley   +1 more source

Local Polarization Unit Engineering Enables Ultrahigh Energy Density in NBT‐Based High‐Entropy Ceramic Capacitors

Advanced Science, EarlyView.
Herein, we demonstrate a breakthrough in dielectric energy storage by engineering local polarization units in high‐entropy multilayer ceramic capacitors (MLCCs). The optimized MLCCs achieve an ultrahigh recoverable energy density of 18.2 J cm−3 with 91% efficiency, coupled with exceptional thermal stability and fatigue resistance.
Shiyu Zhou, Yucheng Zhou, Linhai Li, A. Pelaiz‐Barranco, Xuefeng Chen, Genshui Wang, Yiwei Chen, Rongjiang Wang, Konstantin Nefedev, Tengfei Hu, Dawei Wang, Tongqing Yang   +11 more
wiley   +1 more source

Coercivity Mechanisms of Single-Molecule Magnets

, 2023
Magnetic hysteresis has become a crucial aspect for characterizing single-molecule magnets, but the comprehension of the coercivity mechanism is still a challenge.
Wu, Ruqian, Zheng, Yan-Zhen, Gu, Lei, Zhao, Guoping, Luo, Qiancheng   +4 more
core