Results 121 to 130 of about 451,786 (303)

Asymmetric magnetization splitting in diamond domain structure: Dependence on exchange interaction and anisotropy

, 2011
The distributions of magnetization orientation for both Landau and diamond domain structures in nano-rectangles have been investigated by micromagnetic simulation with various exchange coefficient and anisotropy constant.
A. Hubert, Hai Sang, Kaixuan Xie, M. J. Donahue, Peng Zhang, W. H. Press, Weiwei Lin, Xiaopu Zhang   +7 more
core   +1 more source

Geometry-induced frustration of magnetization in a planar soft-hard magnetic system [PDF]

arXiv, 2007
We computationally study the frustrated magnetic configurations of a thin soft magnetic layer with the boundary condition fixed by underlying hard magnets. Driven by geometrical constraints and external magnetic field, transitions between frustrated energy minima result in magnetic hysteretic behavior.
arxiv  

Hollow‐Structured Nanorobot with Excellent Magnetic Propulsion for Catalytic Pollutant Degradation, Anti‐Bacterial and Biofilm Removal

Advanced Healthcare Materials, EarlyView.
A hollow‐structured Fe3O4@AgAu@PDA‐ZnPc nanosphere has been developed, exhibiting controllable catalytic activity and “photothermal‐photodynamic‐Ag+” coupling antibacterial characteristics. When subjected to a rotating magnetic field, these performances are uniquely enhanced by magnetic propulsion, allowing the nanosphere to function as a magnetic ...
Jing Wang, Guangjin Yu, Qunling Fang, Yunqi Xu, Jie Zhang, Ailing Hui, Shouhu Xuan, Ken Cham‐Fai Leung   +7 more
wiley   +1 more source

Magnetization transport and quantized spin conductance

, 2003
We analyze transport of magnetization in insulating systems described by a spin Hamiltonian. The magnetization current through a quasi one-dimensional magnetic wire of finite length suspended between two bulk magnets is determined by the spin conductance
D. Forster, D. C. Mattis, D. D. Awschalom, D. L. Maslov, Daniel Loss, E. Fradkin, Florian Meier, R. Shankar, S. Allen, S. Datta   +9 more
core   +1 more source

Compact magnets for magnetic resonance

Concepts in Magnetic Resonance Part A, 2008
AbstractThis article provides an introduction to magnetic material properties and an overview of compact permanent magnet designs. The descriptions are focused on portable magnetic resonance instruments, including in‐magnet and open configurations. A few examples are presented for spectroscopy as well as for space‐resolved and relaxation measurements. ©
Vasiliki Demas, Pablo J. Prado, Martin D. Hürlimann, Yi Qiao Song, Paola Fantazzini, Villiam Bortolotti   +5 more
openaire   +3 more sources

Optoelectronic Devices for In‐Sensor Computing

Advanced Materials, EarlyView.
The raw data obtained directly from sensors in the noisy analogue domain is often unstructured, which lacks a predefined format or organization and does not conform to a specific data model. Optoelectronic devices for in‐sensor visual processing can integrate perception, memory, and processing functions in the same physical units, which can compress ...
Qinqi Ren, Chaoyi Zhu, Sijie Ma, Zhaoqing Wang, Jianmin Yan, Tianqing Wan, Weicheng Yan, Yang Chai   +7 more
wiley   +1 more source

Negative magnetic susceptibility and nonequivalent ensembles for the mean-field $\phi^4$ spin model

, 2007
We calculate the thermodynamic entropy of the mean-field $\phi^4$ spin model in the microcanonical ensemble as a function of the energy and magnetization of the model.
Alessandro Campa, Barré, Barré, Campa, Chavanis, Chavanis, Chomaz, Costeniuc, Costeniuc, Costeniuc, Costeniuc, Dauxois, Desai, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Eyink, Gross, Hahn, Hahn, Hugo Touchette, Ispolatov, Kiessling, Lynden-Bell, Lynden-Bell, Ruelle, Rugh, Rugh, Smith, Stefano Ruffo, Thirring, Touchette, Touchette, Touchette, Touchette   +37 more
core   +1 more source

Chiroferromagnetic Quantum Dots for Chiroptical Synapse (ChiropS)

Advanced Materials, EarlyView.
Chiroptical activity is enhanced by up to 0.003 in the g‐factor through the induction of ferromagnetism in quantum dots. A chiroptical neuromorphic synapse, composed of chiroferromagnetic quantum dots, generates different synaptic weights from multiple wavelengths and circularly polarized light.
Junyoung Kwon, Jae Bum Jeon, Walber Gonçalves Guimarães Júnior, Min Gu Lee, Changhyeon Lee, Geunyoung Kim, Hanchan Song, Woon Hyung Cheong, Sung Gap Im, André F. de Moura, Kyung Min Kim, Jihyeon Yeom   +11 more
wiley   +1 more source

Spin-Orbit Torques in ferrimagnetic GdFeCo Alloys

, 2016
The spin-orbit torque switching of ferrimagnetic Gd$_x$(Fe$_{90}$Co$_{10}$)$_{100-x}$ films was studied for both transition metal (TM)-rich and rare earth (RE)-rich configurations.
Cheema, Suraj, Hellman, Frances, Iwata, Satoshi, Kato, Takeshi, Matsumura, Tomoya, Roschewsky, Niklas, Salahuddin, Sayeef   +6 more
core   +1 more source

Tuning Transition Metal 3d Spin state on Single‐atom Catalysts for Selective Electrochemical CO2 Reduction

Advanced Materials, EarlyView.
The introduction of P into a single‐atom Fe catalyst is shown to induce a shift in its electronic configuration toward a high spin state. This is proposed to enhance electron back donation via the dxz/dyz‐π* bond, which improves *COOH adsorption and facilitates the electrochemical conversion of CO2 to CO.
Yipeng Zang, Yan Liu, Ruihu Lu, Qin Yang, Bingqing Wang, Mingsheng Zhang, Yu Mao, Ziyun Wang, Yanwei Lum   +8 more
wiley   +1 more source