Results 31 to 40 of about 4,708 (228)

Paleomagnetic Constraint of the Brunhes Age Sedimentary Record From Lake Junín, Peru

Frontiers in Earth Science, 2020
Normalized remanence, a proxy for relative geomagnetic paleointensity, along with radiocarbon and U-Th age constraints, facilitates the generation of a well-constrained chronology for sediments recovered during International Continental Scientific ...
Robert G. Hatfield, Robert G. Hatfield, Joseph S. Stoner, Katharine E. Solada, Ann E. Morey, Arielle Woods, Christine Y. Chen, David McGee, Mark B. Abbott, Donald T. Rodbell   +9 more
doaj   +1 more source

Production of (Sm,Zr)(Fe,Co)3 magnets

Heliyon, 2022
This study was aimed at the improvement of SmFe3-based alloys prepared by means of melt-spinning. A systematic study was carried out on (Sm1-xZrx)(Fe0.75Co0.25)3 (x = 0–0.4) alloys melt-spun at a wheel speed of 50 m/s and annealed at 773–1173 K.
Tetsuji Saito
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Effects of heat treatment processes on microstructural evolution and magnetic properties in medium-carbon low-alloy semi-hard magnetic steels

Cailiao gongcheng
To obtain Fe-based medium-carbon low-alloy semi-hard magnetic steels with high residual magnetic flux density Br， five distinct heat treatment processes are employed： full annealing， air quenching （AQ）， water quenching （WQ）， air quenching followed by ...
LI Jun, ZHAO Kai, LI Bo, ZHAO Yu, GUO Huan, HAN Siyuan   +5 more
doaj   +1 more source

Tunable Magnetic Properties of Interconnected Permalloy Nanowire Networks

Nanomaterials, 2023
In this study, we investigate the magnetic properties of interconnected permalloy nanowire networks using micromagnetic simulations. The effects of interconnectivity on the hysteresis curves, coercivity, and remanence of the nanowire networks are ...
Alejandro Pereira, Guidobeth Sáez, Eduardo Saavedra, Juan Escrig   +3 more
doaj   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Tectonic Inversion of the SCS from 3-D Magnetization Vector Clustering: Evidence for Differential Rotation and Ridge Jump

Applied Sciences
The eastern and southwestern sub-basins of the South China Sea (SCS) display starkly contrasting magnetic lineation patterns, yet quantitative 3-D mapping of the subsurface magnetic architecture—essential for deciphering basin evolution—remains ...
Juechang Wan, Shuling Li, Zhe Ji
doaj   +1 more source

Essai de la fluméthrine pour le contrôle de la tique Amblyomma variegatum dans un élevage bovin en Guadeloupe

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1987
Une expérimentation a été conduite dans un élevage de Guadeloupe pour estimer l'efficacité et la rèmanence d'un pyrèthre, la fluméthrine, administrée en bain, en aspersion et en dépôt dorsal ("Pour-on") sur la tique Amblyomma variegatum. L'efficacité est
Nicolas Barré, Emmanuel Camus, Jean Delaporte   +2 more
doaj   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

Advanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia, Rogelio Ortigosa, Jesús Martínez‐Frutos, Daniel Garcia‐Gonzalez   +3 more
wiley   +1 more source

Proximity Induced Magnetic Anisotropy and Trefoil Fermiology in Monolayer FeCl2/Bi(111)

Advanced Materials, EarlyView.
Reorientation of magnetic anisotropy in a 2D van der Waals magnet is demonstrated in monolayer FeCl2 epitaxially grown on a bismuth substrate, from its natural out‐of‐plane direction to a predominantly in‐plane orientation. The FeCl2/bismuth heterostructure exhibits moiré‐induced interface states, suggesting strong coupling at the interface.
Shigemi Terakawa, Binbin Liu, Frank Schindler, Titus Neupert, Jing‐Rong Ji, Gabriele Domaine, Emily C. McFarlane, Daiyu Geng, Jiabao Yang, Fadi Choueikani, Philippe Ohresser, Manuel Valvidares, Pierluigi Gargiani, Craig Polley, Gerardina Carbone, Mats Leandersson, Stuart S. P. Parkin, Amilcar Bedoya‐Pinto, Niels B. M. Schröter   +18 more
wiley   +1 more source