Results 71 to 80 of about 21,402 (315)

The preparation of sintered NdFeB magnet with high-coercivity and high temperature-stability

, 2011
The NdFeB magnets with high intrinsic coercivity have been produced by using the conventional powder metallurgy method (including SC, HD and JM) of sintered NdFeB magnets. The effects of grain boundary phases on the microstructure and magnetic properties
Lee, Don, Don Lee, Guo, S., R J Chen, Yan, G. H., Y Ding, Yan, GH, G H Yan, Ding, Y., S Guo, A R Yan, Yan, A. R., Chen, R. J.   +12 more
core   +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

Geomagnetic Paleointensity Around 30 Ma Estimated From Afro‐Arabian Large Igneous Province

Geochemistry, Geophysics, Geosystems, 2020
We conducted a geomagnetic paleointensity study of lava flows at ∼30 Ma distributed in the Lima‐Limo section of the Afro‐Arabian Large Igneous Province.
Yutaka Yoshimura, Toshitsugu Yamazaki, Yuhji Yamamoto, Hyeon‐Seon Ahn, Tesfaye Kidane, Yo‐ichiro Otofuji   +5 more
doaj   +1 more source

Structure and magnetic properties of melt-spun Mn-Ga-Cu-Al ribbons

Materials Research Express, 2023
In this work, we investigated structure and magnetic properties of Mn _65 Ga _20 Al _15−x Cu _x (x = 0, 5, 10 and 15) alloy ribbons prepared by melt-spinning method combined with annealing.
Pham Thi Thanh, Nguyen Huy Ngoc, Nguyen Mau Lam, Kieu Xuan Hau, Nguyen Hai Yen, Truong Viet Anh, Nguyen Huy Dan   +6 more
doaj   +1 more source

Positive temperature coefficient of coercivity in Sm1-xDyx(Co0.695Fe0.2Cu0.08Zr0.025)(7.2) magnets with spin-reorientation-transition cell boundary phases

, 2015
Positive temperature coefficients of coercivity are first obtained in the series of Sm1-xDyx (Co0.695Fe0.2Cu0.08Zr0.025)(7.2) magnets. The temperature range with a positive temperature coefficient of coercivity is gradually moving to higher temperature ...
Lee, Don, Z. Liu, Don Lee, R. J. Chen, J. Liu, Li, W., Liu, L., Liu, Z., M. Li, L. Liu, A. R. Yan, W. Li, Liu, J., Yan, A. R., Li, M., Chen, R. J.   +15 more
core   +1 more source

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

Advanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng, Peng Zhang, Gang Qiu, Ting‐Hsun Yang, Chang Niu, Yaochen Li, Wenqiang Cui, Yang Feng, Peide D. Ye, Ke He, Kai Chang, Kang L. Wang   +11 more
wiley   +1 more source

Estudo do controle das propriedades magneticas de liga a base de terras-raras, Pr (Nd) - Fe-B-Cu, por forjamento uniaxial a quente [PDF]

, 1995
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro TecnologicoA presente tese se enquadra na área de materiais magneticamente duros e estuda o forjamento uniaxial a quente de ligas fundidas, Pr(Nd)-Fe-B-Cu, para produzir uma orientação ...
Marcondes, Paulo Victor Prestes
core  

Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions

Advanced Materials, EarlyView.
Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng, Yu Xuan Yeoh, Nicholas Yong Wei Foo, Keerthana Radhakrishnan, Guo Zhan Lum   +4 more
wiley   +1 more source

On subordination conditions for systems of minimal di erential operators

Современная математика: Фундаментальные направления
In this paper, we provide a review of results on apriori estimates for systems of minimal differential operators in the scale of spaces \(L^p(\Omega),\) where \(p\in[1,\infty].\) We present results on the characterization of elliptic and \(l ...
D. V. Limanskii, M. M. Malamud
doaj   +1 more source

Explicit T-coercivity for the Stokes problem: A coercive finite element discretization

Computers & Mathematics with Applications
Using the T-coercivity theory as advocated in [Chesnel, Ciarlet, T -coercivity and continuous Galerkin methods: application to transmission problems with sign changing coefficients (2013)], we propose a new variational formulation of the Stokes problem which does not involve nonlocal operators.
Patrick Ciarlet, Erell Jamelot
openaire   +2 more sources