Results 91 to 100 of about 3,130,788 (298)

In Situ Observation of Domain Wall Pinning in Sm(Co,Fe,Cu,Zr)(z) Magnet by Lorentz Microscopy

, 2015
The microstructure and magnetic domain-wall motion of a sintered Sm(Co,Fe,Cu,Zr)(z) permanent magnet with different Cu and Fe contents was investigated by Lorentz transmission electron microscopy.
Z. Liu, Che, Renchao, Zhang, Jian, J. Du, Du, J., W. Xia, Liu, Z., Tian, Yue, Tian, Y., Xu, H., Liu, J. Ping, Liu, J., H. Xu, Zhang, J., J. Liu, J. Zhang, Xia, W., Xu, Hui, A. Yan, Xia, Weixing, Yan, A., Liu, Zhuang, Du, Juan, Xia, WX, Y. Tian, Yan, Aru   +25 more
core   +1 more source

Nonlinear dielectric response in ferroelectric thin films

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
Electrical permittivity dependence on electric external bias field was investigated in PZT thin films. The results revealed the existence of two mechanisms contributing to the electrical permittivity. The first one was related to the domain reorientation,
Lente, M. H., Bacichetti, A. L., Mendes, R. G., Eiras, J. A.   +3 more
doaj  

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram, Guangwei Du, Sangam Kanekar, Nandakumar Nagaraja   +3 more
wiley   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Leaky‐Integrate‐Fire Neuron via Synthetic Antiferromagnetic Coupling and Spin‐Orbit Torque

Advanced Science
Neuromorphic Computing (NC) is a promising candidate for Artificial Intelligence (AI) applications. To realize NC, electronic analogues of brain components, such as synapses and neurons, must be designed.
Badsha Sekh, Durgesh Kumar, Hasibur Rahaman, Ravi Shankar Verma, Ramu Maddu, Jianpeng Chan, Wai Lum William Mah, Stuart S. P. Parkin, S. N. Piramanayagam   +8 more
doaj   +1 more source

Antiferromagnetic domain wall creep driven by magnetoelectric effect

APL Materials, 2018
We observed the magnetoelectric induced domain wall propagation in a Pt/Co/Au/Cr2O3/Pt stacked thin film based on magnetic domain observations using scanning soft X-ray magnetic circular dichroism microscopy.
Yu Shiratsuchi, Hiroaki Yoshida, Yoshinori Kotani, Kentaro Toyoki, Thi Van Anh Nguyen, Tetsuya Nakamura, Ryoichi Nakatani   +6 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Domain wall resistance in perpendicular (Ga,Mn) As: Dependence on pinning

, 2010
We have investigated the domain wall resistance for two types of domain walls in a (Ga,Mn)As Hall bar with perpendicular magnetization. A sizeable positive intrinsic DWR is inferred for domain walls that are pinned at an etching step, which is quite ...
Wang KY (Wang K. Y.), R.P. Campion, Wunderlich J (Wunderlich J.), Campion RP (Campion R. P.), A.C. Irvine, Foxon CT (Foxon C. T.), A.W. Rushforth, K.W. Edmonds, Edmonds KW (Edmonds K. W.), Rushforth AW (Rushforth A. W.), Williams DA (Williams D. A.), K.Y. Wang, Irvine AC (Irvine A. C.), D.A. Williams, Olejnik K (Olejnik K.), C.T. Foxon, Gallagher BL (Gallagher B. L.), J. Wunderlich, K. Olejnik, B.L. Gallagher   +19 more
core   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Conformational Domain Wall Switch [PDF]

, 2019
Domain walls in ferroelectric materials have tantalizing potential in disruptive memory and reconfigurable nanoelectronics technologies. Here, a ferroelectric domain wall switch with three distinct addressable resistance states is demonstrated.
Valanoor Nagarajan, Sergey Prosandeev, Chen, L.-Q., Cheng, X, Zhang, Q., Bellaiche, L., Qi Zhang, Prosandeev, S., Bulanadi, R., Laurent Bellaiche, Prokhorenko, Sergei, Xiaoxing Cheng, Chen, LQ, Long‐Qing Chen, Ralph Bulanadi, Sergei Prokhorenko, Nagarajan, V., Zhang, Q ; https://orcid.org/, Seidel, J ; https://orcid.org/, Bulanadi, R, Sando, D ; https://orcid.org/, Daniel Sando, Prosandeev, S, Jan Seidel, Prokhorenko, S, Sharma, P., Sando, D., Cheng, X., Sharma, P ; https://orcid.org/, Nagarajan, V ; https://orcid.org/, Seidel, J., Pankaj Sharma, Bellaiche, L   +32 more
core   +1 more source