Results 21 to 30 of about 311,855 (255)

Electrical polarization of nuclear spins in a breakdown regime of quantum Hall effect

, 2006
We have developed a method for electrical polarization of nuclear spins in quantum Hall systems. In a breakdown regime of odd-integer quantum Hall effect (QHE), excitation of electrons to the upper Landau subband with opposite spin polarity dynamically ...
Hamaya, K., Kawamura, M., Machida, T., Masubuchi, S., Sugihara, K., Takahashi, H.   +5 more
core   +1 more source

Deformation Behavior of La2O3‐Doped Copper during Equal Channel Angular Pressing

Advanced Engineering Materials, EarlyView.
By additions of strengthening elements and/or structure optimization, the mechanical properties of copper can be increased while keeping favorable electric conductivity. By combining addition of La2O3 and processing by equal channel angular pressing, substructure development is achieved, leading to increase in microhardness to more than double the ...
Lenka Kunčická, Josef Walek, Radim Kocich   +2 more
wiley   +1 more source

Low‐Activation Compositionally Complex Alloys for Advanced Nuclear Applications—A Review

Advanced Engineering Materials, EarlyView.
Low‐activation compositionally complex alloys (LACCAs) are advanced metallic materials primarily composed of low‐activation elements, offering advantages such as rapid compliance with operational standards and safe recyclability. This review highlights their potential for extreme high‐temperature irradiation environments as structural materials for ...
Yangfan Wang, Hanliang Zhu, Zhiyang Wang, Zhijun Qiu, Xiao Wang, Zengxi Pan, Hongtao Zhu, Mingxing Zhang, Huijun Li   +8 more
wiley   +1 more source

Electrical Control of Magnetization in Charge-ordered Multiferroic LuFe2O4

, 2009
LuFe2O4 exhibits multiferroicity due to charge order on a frustrated triangular lattice. We find that the magnetization of LuFe2O4 in the multiferroic state can be electrically controlled by applying voltage pulses.
Cheng, Zhao-Hua, Li, Chang-Hui, Liu, Yi, Sun, Young, Wang, Fen, Zhang, Xiang-Qun   +5 more
core   +1 more source

Synergistic Effects of Cerium and Magnesium on Optimizing Electrical Conductivity and Mechanical Properties of AlSi3 Cast Alloys

Advanced Engineering Materials, EarlyView.
This study investigates the impact of Ce and/or Mg on the electrical conductivity (EC) and mechanical properties of AlSi3 cast alloy. It highlights the synergistic effects of Ce and Mg on eutectic Si modification and Mg solute reduction in the Al matrix, resulting in the optimization of EC, strength, and ductility of the alloy.
Farnaz Yavari, Mousa Javidani, Lei Ray Pan, X.‐Grant Chen   +3 more
wiley   +1 more source

Avalanches in Breakdown and Fracture Processes

, 1999
We investigate the breakdown of disordered networks under the action of an increasing external---mechanical or electrical---force. We perform a mean-field analysis and estimate scaling exponents for the approach to the instability.
A. A. Griffith, A. Buchel, A. Buchel, A. Garcimartín, A. Guarino, A. H. Thompson, A. Hansen, A. Hansen, A. Petri, Alessandro Vespignani, B. Gutenberg, B. K. Chakrabarti, B. Kahng, B. Suki, C. Maes, C. Unger, C. Unger, D. Heerman, D. Sornette, F. Tzschichholz, G. Caldarelli, G. Cannelli, G. Vasconcelos, H. A. Daniels, H. Eugene Stanley, J. B. Rundle, J. B. Rundle, J. B. Rundle, J. D. Gunton, J. P. Sethna, J. Weiss, K. Dahmen, K.-T. Leung, K.-T. Leung, L. de Arcangelis, L. de Arcangelis, L. Golubovic, L. Golubovic, L. Monette, L. Monette, M. Acharaya, M. Acharaya, M. Kloster, P. C. Hemmer, P. Diodati, P. Duxbury, P. Ray, Purusattam Ray, R. Englman, R. L. B. Selinger, R. L. B. Selinger, S. Ciliberto, S. Field, S. Kirkpatrik, S. L. Phoenix, S. Roux, S. Zapperi, S. Zapperi, S. Zapperi, Stefano Zapperi, T. Ray, V. I. Räisänen, W. H. Press, Z.-G. Wang   +63 more
core   +1 more source

Enhancing the Age‐Hardening Response of Laser Powder‐Bed Fusion WE43 Alloy through Microstructural Control

Advanced Engineering Materials, EarlyView.
Laser powder‐bed fusion (L‐PBF) can produce dense WE43 magnesium alloy parts, but their mechanical properties are limited by a nonhomogeneous microstructure. This study investigates the effects of varying direct aging (T5) and artificial age‐hardening (T6) conditions on microstructure and strength. Optimized T6 treatment significantly improves strength
Prathviraj Upadhyaya, Sinéad M. Uí Mhurchadha, Oliver J. McCarthy, Tríona Kennedy, Mert Celikin, Ramesh Raghavendra   +5 more
wiley   +1 more source

Direct Consolidation of Copper–Graphene Composite by Rotary Swaging

Advanced Engineering Materials, EarlyView.
The applicability of the rotary swaging method for preparation of electroconductive copper–graphene composite by direct consolidation of powders is proven. The consolidated material features advantageous microstructure featuring fine grains and twins, with homogeneous distribution of graphene, primarily along the twin boundaries, which contribute to ...
Radim Kocich, Lenka Kunčická, Pavel Czernek   +2 more
wiley   +1 more source

Schottky nanocontacts on ZnO nanorod arrays [PDF]

, 2019
We report on fabrication and electrical characteristics of ZnO nanorod Schottky diode arrays. High quality ZnO nanorods were grown for the fabrication of the Schottky diodes using noncatalytic metalorganic vapor phase epitaxy and Au was evaporated on the
Kim, JW, Park, SM, Park, WI, Yi, GC
core   +1 more source

Investigation of Solid‐Solution Phase Formation in AlCuNiSi Medium Entropy Alloys and its Effect on Microstructural, Thermal, and Microhardness Properties

Advanced Engineering Materials, EarlyView.
This study focuses on synthesizing equiatomic AlCuNiSi medium‐entropy alloys using mechanical alloying for advanced industrial applications. Continuous milling leads to grain refinement and the formation of stable BCC/FCC solid‐solution phases, resulting in enhanced mechanical properties. A unique Si‐rich solid‐solution phase is observed, which did not
Mustafa Okumuş, Mehmet Emin Demir, Celal Onat   +2 more
wiley   +1 more source