Results 131 to 140 of about 50,805 (272)

Preparation of Cobalt Ferrite Nanocrystallites by Annealing of Alloyed Intermetallic Co-Fe and Study of Magnetic Behavior

Journal of Advanced Materials in Engineering, 2017
In this work, cobalt ferrite nanocrystallites were synthesized by air annealing of milled Co-Fe compound. Effect of annealing temperature on phase formation of cobalt ferrite and structural and magnetic properties of the product was studied.
M. Hakimi, P. Kameli, B. Aslibeiki, A. Faqeeh   +3 more
doaj  

Single‐Crystal PZT‐Driven Organic Piezo‐Phototronic Adaptive Transistors Toward Advanced Spatiotemporal Visual Computing

Advanced Science, EarlyView.
Here, we propose a single‐crystal PZT‐based piezo‐phototronic organic adaptive memory transistor (OAMT), achieving a record memory window capacity factor (γ) of 0.87 at a low SS of 200 mV/decade via efficient multi‐field control. The device achieves a high recognition accuracy ∼ 90% in neuromorphic simulations, demonstrates robust fault tolerance under
Chenhao Xu, Xingyu Cao, Zewen Li, Shifu Xiong, Yongxu Hu, Zhongwu Wang, Yujie Yuan, Lei Zheng, Wenping Hu   +8 more
wiley   +1 more source

Orientation‐Confinement‐Engineered Stabilization of Ferroelectricity in HfO2 toward Maximum Polarization

Advanced Science, EarlyView.
Ferroelectric phase stability in Hf₀.5Zr₀.5O2 films is enhanced by confinement to the (111) crystal orientation, as demonstrated by first‐principles calculations and experiments. Polarization approaching its maximum value is achieved through selective ferroelectric switching paths, which are further tuned by oxygen vacancies and cation doping to ...
Fatoye Sawyerr, Yongqing Sun, Zekun Zhang, Kang Jia, Shuning Lv, Qi Hu, Shu Shi, Qiushi Huang, Xie Zhang, Xiaoli Fan, Li‐min Liu, Shifeng Wen, Zheng Wen, Tengfei Cao, Jingsheng Chen   +14 more
wiley   +1 more source

Neural Network‐Based Permittivity Engineering of Magnetic Absorbers for Customizable Microwave Absorption

Advanced Science, EarlyView.
A neural network‐enabled permittivity engineering paradigm is introduced, transcending traditional trial‐and‐error design. By decoupling electromagnetic parameters and screening a high‐throughput feature space, an ultrathin (1.0 mm) magnetic absorber is inversely designed, experimentally achieving a superior and customizable 5.1 GHz bandwidth and ...
Chenxi Liu, Jinzhe Li, Sen Li, Zhongqiu Guo, Yao Chen, Tian Li, Renchi Qin, Jiaxu Sun, Yongxi Lu, Fanbin Meng   +9 more
wiley   +1 more source

Strain‐Assembled Crystalline SrRuO3 Microtube and Emergent Curvilinear Magnetism

Advanced Science, EarlyView.
The interfacial‐strain assembly based on planar nanomembranes presents a promising approach for constructing novel magnetic microstructures. By employing the perpendicular magnetic anisotropic SrRuO3 freestanding nanomembrane as a model system, we exploit the interfacial strain effect within the crystalline SrTiO3/SrRuO3 bilayer, and successfully ...
Lei Gao, Yuqian Wang, Xiangyu Lyu, Pengyu Liu, Mingtong Zhu, Jin Liu, Mengcheng Li, Ailing Ji, Qinghua Zhang, Lin Gu, Libo Ma, Zexian Cao, Nianpeng Lu   +12 more
wiley   +1 more source

Fe‐Based Nanocrystalline Magnetic Shielding Cylinder with Subfemtotesla‐Level Magnetic Noise

Advanced Science, EarlyView.
Shields with low magnetic noise are achieved by integrating Fe‐based nanocrystalline magnetic shielding cylinders into shielding systems based on μ‐metal. Benefiting from high permeability and low loss factor, Fe‐based nanocrystalline magnetic shielding cylinders effectively suppress magnetic noise. Notably, the magnetic shielding cylinder with the ten‐
Peipei Shen, Danyue Ma, Kun Wang, Shuang Li, Yanan Gao, Pengfei Wang, FuSen Yuan, Hua Chen, Zhuo Wang, Ziling Liu, Meng Xie, Bo Li, Hongbo Zhou, Baoan Sun   +13 more
wiley   +1 more source

Magneto‐X Effects in Magnetic Soft Materials and Their Applications

Advanced Science, EarlyView.
This review systematically explores magnetic soft materials (MSMs), a novel class of composites that transform under magnetic fields. It catalogs fundamental “Magneto‐X” effects, classifies materials by their matrix and magnetic fillers, and highlights transformative applications in soft robotics, biomedical devices, flexible electronics, etc. Finally,
Ziyin Xiang, Xiangling Xia, Benjamin Ducharne, Yujie Ye, Jie Shang, Run‐Wei Li   +5 more
wiley   +1 more source

Intrinsic Negative Magnetoresistance and Broadband Photoresponse in Magnetic van der Waals Crystal TaFeTe2

Advanced Science, EarlyView.
2D van der Waals (vdW) materials MM′Te2 with broken symmetry attract great interest for unique magnetic structures and optical‐phonon‐induced phase transitions. We report mechanically exfoliable TaFeTe2 single crystals, exhibiting spin‐glass behavior, intrinsic unsaturated negative magnetoresistance up to 9 T, self‐powered internal photocurrent, and ...
Changcun Li, Jiazhen Wu, Sirong Lu, Lei Liang, Wenying Zhou, Bingke Zhang, Degang Zhao, Fucai Liu   +7 more
wiley   +1 more source

Gate Enhancing Charge‐Spin Conversion in Organic Chiral Field Effect Transistors

Advanced Science, EarlyView.
Room‐temperature organic chiral multiferroic field effect transistors are demonstrated, enabling bidirectional control between spin and charge. Specifically, spin polarization affects the ferroelectric polarization, and ferroelectric polarization, in turn, can modulate spin polarization and spin‐dependent transport.
Shilin Li, Renjie Hu, Xiangping Zhao, Xi Wang, Wei Qin   +4 more
wiley   +1 more source

A laminated magnetic flux concentrator with low coercivity and high relative permeability for efficient flux modulation in MEMS magnetoresistive sensors. [PDF]

Microsyst Nanoeng
Jiao Q, Peng G, Jin Z, Zhang C, Chen J.
europepmc   +1 more source