Results 91 to 100 of about 21,402 (315)

Unveiling Exsolution‐Induced Giant Electronic and Magnetic Property Changes in Non‐Stoichiometric Titanate Perovskite Thin Films

Advanced Materials, EarlyView.
A giant insulator to metal transition and emergent superparamagnetism are revealed by nanoparticle exsolution in non‐stoichiometric titanate perovskite thin films. By combining transport, synchrotron spectroscopy, and first‐principles calculations, this work reveals how defect reconfiguration and lattice reconstruction fundamentally reshape electronic ...
Sungil Kim, June Ho Lee, Yaolong Xing, Dongchang Kim, Haeseong Jeong, Mongjun Jeong, Manuel Valvidares, Stuart S. P. Parkin, Sang Ho Oh, Donghwa Lee, Hyojin Yoon, Hyeon Han   +11 more
wiley   +1 more source

Morphological and magnetic features of Ru(III) doped magnetite ultrafine nanoparticles

Materials Research Express, 2020
Magnetite nanoparticles constitute a class of nanoparticles which is easily manipulated using a magnetic field. Magnetite nanoparticles doped with ruthenium (Ru) ions [Ru _x Fe _(3−x) O _4 ] were synthesized via co-precipitation method where 0.0 ≤ x ≤ 0 ...
M A Zayed, S I El-dek, M K Ahmed, Doaa H El Sherbiny   +3 more
doaj   +1 more source

The effect of Nd-Cu diffusion during hot pressing and hot deformation on the coercivity and the deformation ability of Nd-Fe-B HDDR magnets

, 2017
HDDR processed Nd-Fe-B powders blended with Nd-Cu powders were hot-pressed and then hot-deformed to obtain fully dense, anisotropic magnets. The microstructure evolution in hot-pressed and hot-deformed HDDR magnets was studied to illustrate the impact of
Lee, Don, Don Lee, Wenzong Yin, Tang, Xu, Jinyun Ju, Zhu, Mingyuan, Renjie Chen, Jin, Chaoxiang, Chaoxiang Jin, Aru Yan, Zexuan Wang, Haihang Wang, Yin, Wenzong, Wang, Zexuan, Wang, Haihang, Mingyuan Zhu, Ju, Jinyun, Xu Tang, Chen, Renjie, Yan, Aru   +19 more
core   +1 more source

Ferromagnetism of Molecular Beam Epitaxy‐grown Ultra‐thin Cr2Ge2Te6 Films Down to the Monolayer Limit on Si Substrates

Advanced Materials, EarlyView.
Uniform monolayer Cr2Ge2Te6 films are achieved on Si substrates by molecular beam epitaxy. Intrinsic ferromagnetism with perpendicular magnetic anisotropy is established in the films by anomalous Hall effect and superconducting quantum interference device measurements, albeit with strong magnetic fluctuations characteristic of its 2D nature.
Pengfei Ji, Ruixuan Liu, Tianchen Zhu, Yang Chen, Yitian Tong, Jinxuan Liang, Yunhe Bai, Yunyi Zang, Zuhan Geng, Fangting Chen, Xiyu Hong, Jiatong Zhang, Luyi Yang, Qi‐Kun Xue, Ke He, Xiao Feng   +15 more
wiley   +1 more source

Tuning Fe₂Ti Distribution to Enhance Extrinsic Magnetic Properties of SmFe₁₂-Based Magnets

Crystals
The ThMn12-type SmFe12-based rare-earth permanent magnet has attracted widespread attention due to its excellent intrinsic magnetic properties and high-temperature stability.
Jinbo Wei, Shuainan Xu, Chengyuan Xu, Xiaolian Liu, Yu Pan, Wei Wang, Yue Wu, Ping Chen, Jun Liu, Lizhong Zhao, Xuefeng Zhang   +10 more
doaj   +1 more source

Ferroelectric Dynamic‐Field‐Driven Nucleation and Growth Model for Predictive Materials‐To‐Circuit Co‐Design

Advanced Materials, EarlyView.
This study presents a compact dynamic‐field‐driven nucleation and growth (DFNG) model that captures ferroelectric switching behavior under arbitrary voltage waveforms. It enables extraction of time‐dependent domain wall velocity and growth dimensionality, which can then be extended to device‐level modeling.
Yi Liang, Soohyeon Kim, Tony Chiang, Megan K. Lenox, Ian Mercer, John J. Plombon, Jon‐Paul Maria, Jon F. Ihlefeld, Wenhao Sun, Wei Lu, John T. Heron   +10 more
wiley   +1 more source

Production of Rare-Earth-Free Iron Nitride Magnets (α″-Fe₁₆N₂)

Metals
To realize rare-earth-free magnets, we studied iron nitride (α″-Fe16N2) magnets, which contain no rare-earth elements. Fe-N powder with the α″-Fe16N2 phase has a high saturation magnetization comparable to high-performance rare-earth magnets but is not ...
Tetsuji Saito, Hitoshi Yamamoto, Daisuke Nishio-Hamane   +2 more
doaj   +1 more source

Impact of TbF3 diffusion on coercivity and microstructure in sintered Nd-Fe-B magnets by electrophoretic deposition

, 2016
Using electrophoretic deposition (EPD) method, the optimum diffusion temperature of TbF3 EPD-coated sintered Nd-Fe-B magnets was clarified. During the grain boundary diffusion, the coercivity increased gradually from 1241 to 1946 kA/m then decreased with
Guo, Shuai, Cao, Xuejing, Yan, Gaolin, Chen, Ling, Chen, Renjie, Yan, Aru   +5 more
core  

Van der Waals Chromium Telluride Thin Films Prepared by Hybrid Pulsed Laser Deposition With Tunable Magnetism

Advanced Materials Interfaces, EarlyView.
Epitaxial Cr(1+δ)Te2 thin films were synthesized via hybrid Pulsed Laser Deposition (PLD) that combined Molecular Beam Epitaxy (MBE) techniques with PLD. Control of the Cr intercalation, δ, enabled modulation of magnetic anisotropy, Curie temperature, and transport properties.
Pia Henning, Anna Tschesche, Tobias Meyer, Jasnamol Palakkal   +3 more
wiley   +1 more source

Magnetic Barium Hexaferrite Nanoparticles with Tunable Coercivity as Potential Magnetic Heating Agents

Nanomaterials
Using magnetic nanoparticles (MNPs) for extracorporeal heating applications results in higher field strength and, therefore, particles of higher coercivity can be used, compared to intracorporeal applications.
Diana Zahn, Marco Diegel, Alina Valitova, Jan Dellith, Silvio Dutz   +4 more
doaj   +1 more source