Results 81 to 90 of about 14,919 (307)

Aimantation spontanée des ferrites

, 1951
Les auteurs ont étudié les variations de l'aimantation à saturation des ferrites de magnésium et de cuivre en fonction de la température de trempe et montré que leurs résultats pouvaient s'interpréter par une théorie de L. Néel relative à l'équilibre des
René Pauthenet, L. Bochirol
core   +1 more source

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

Advanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren, Ke Yang, Chichong Lu, Song Ma, Bowen Zheng, Zhenhui Ma   +5 more
wiley   +1 more source

Ferritas Ni-Zn: breve revisão sobre o processo convencional de fabricação e as propriedades permeabilidade magnética e constante dielétrica Ni-Zn ferrites: brief review on the conventional method of fabrication and the magnetic permeability and dielectric constant properties

Cerâmica, 2006
As ferritas Ni-Zn são cerâmicas magnéticas que têm sido amplamente aplicadas na fabricação de componentes elétricos e eletrônicos. Esses materiais têm sido estudados há décadas por diversos autores, os quais têm definido a relação entre as propriedades ...
V. L. O. Brito
doaj   +1 more source

Thermocouple Junctioned with Ferrites

, 1997
Measurements are reported of the thermo-e.m.f. of a thermoelectric junction composed of polycrystalline ferrites or multilayered ferrite films as a function of the temperature. The thermo-e.m.f.
M. Sugimoto, Kwon, O., Fukushima, Y., Sugimoto, M., Hiratsuka, N., N. Hiratsuka, Y. Fukushima, O.H. Kwon   +7 more
core   +1 more source

Magnetoelectric Nanoparticles Enable Modulation of Cortical Networks by Low‐Intensity Static Magnetic Fields In Vitro

Advanced Science, EarlyView.
Neuromodulation strategies are increasingly needed to stimulate, restore, or replace altered neuronal activity in disease. Cobalt ferrite‐barium titanate (CFO–BTO) magnetoelectric nanoparticles convert low‐intensity static magnetic fields into local electrical modulation of cortical networks.
Nathalia Cancino‐Fuentes, Alejandro Suarez‐Perez, Elric Zhang, Hao Ye, Marta Bonato, Joana Covelo, Vitaly Pustovalov, Anton Guimera‐Brunet, Xavi Illa, Valentin Gantenbein, Cagatay M. Oral, Marta Parazzini, Salvador Pané, Maria V. Sanchez‐Vives   +13 more
wiley   +1 more source

Differential Tissue‐Coupled Powering for Battery‐Free Injectable Electroceuticals

Advanced Science, EarlyView.
A thread‐like injectable neural stimulator is powered through differential tissue‐coupled powering (DTCP), which harvests RF‐frequency tissue potentials with an elongated receiver while preserving a injectable cross‐section. The system integrates an ASIC, stimulation electrodes, and a portable transmitter, enabling wireless peripheral nerve stimulation,
Han Wu, Sultan Mahmud, Mali Halac, Asif Iftekhar Omi, Domenica Sofia Baez Rodas, Jeremiasz Dados, Chaojun Cheng, Anyu Jiang, Cameron Wallace, Anvi Singh, Erin Patrick, Baibhab Chatterjee, Shriya Srinivasan, Adam Khalifa   +13 more
wiley   +1 more source

BEHAVIORS OF ADDITIVES IN FERRITES

, 1977
On discute l'influence de différents cations allant des métaux alcalins aux métaux de transition de la classification périodique. Les ferrites utilisés sont le ferrite de Ni, le ferrite de Mg et le ferrite de Zn qui présentent une distribution différente
J. TASAKI, T. IZUSHI
core   +1 more source

Preparation and microwave absorbing properties in the X-band of natural ferrites from iron sands by high energy milling

Materials Research Express, 2018
Bulk natural ferrites based in iron sands were synthesized at room temperature by high energy ball milling. The reduced particle sizes of the ferrites were milled at 100 rpm at selected time intervals of 0, 2, 4, and 6 h. The as-milled products were then
X Mashuri, W Lestari, X Triwikantoro, X Darminto   +3 more
doaj   +1 more source

Magnetoelectric BaTiO3/CoFe2O4 Thin‐Film Meshes for Neuronal Differentiation

Advanced Science, EarlyView.
We engineer an epitaxial BaTiO3/CoFe2O4 magnetoelectric mesh that overcomes boundary‐induced mechanical clamping. Progressively reducing the mechanical constraint, from substrate‐clamped to PDMS‐transferred and ultimately freestanding, enhances magnetic‐to‐electric transduction and strengthens magnetoelectric coupling.
Mathieu Mirjolet, Hao Ye, Abderrahim Lahlahi Attalhaoui, Donghoon Kim, Vitaly Pustovalov, Elric Zhang, Marc Tudela‐Pi, Bastian Gebauer, Juan Bautista Carda Castelló, Anton Guimerà‐Brunet, Josep Puigmartí‐Luis, Xiang‐Zhong Chen, Minsoo Kim, Salvador Pané   +13 more
wiley   +1 more source

A Study on Waste-derived NiZn Soft Ferrites As EMI Suppressor [PDF]

, 2011
Nickel-zinc soft ferrites with spinel structure are important electronic components popularly used as EMI suppressor, electromagnet core and transformer core. It contains nickel, zinc or manganese, and the raw material is mainly hematite.
Woon, H. S.
core   +3 more sources