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Your search keyword '"Zhang Xue-Feng"' showing total 9 results
Start Over Author "Zhang Xue-Feng" Journal chinese physics b
9 results on '"Zhang Xue-Feng"'

1. Asymmetric scattering behaviors of spin wave dependent on magnetic vortex chirality

Author

Zhang, Xue-Feng, Shim, Je-Ho, Ma, Xiao-Ping, Song, Cheng, Yu, Haiming, and Piao, Hong-Guang

Subjects
Condensed Matter::Materials Science, Condensed Matter - Materials Science, Computer Science::Neural and Evolutionary Computation, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, General Physics and Astronomy, Applied Physics (physics.app-ph), Physics - Applied Physics
Abstract

In this letter, an asymmetric spin wave scattering behaviors caused by vortex chirality are investigated in cross-shaped ferromagnetic system by using the micromagnetic simulations. In the system, four scattering behaviors are found, 1) asymmetric skew scattering, depending on the polarity of vortex core, 2) back scattering (reflection), depending on the vortex core stiffness, 3) side deflection scattering, depending on structural symmetry of the vortex circulation, and 4) geometrical scattering, depending on waveguide structure. The first and second scattering behaviors are attributed to nonlinear topological magnon spin Hall effect related to magnon spin-transfer torque effect, which has value for magnonic exploration and application.

Published
2023

9. Evolution of structure and magnetic properties in PrCo5 magnet for high energy ball milling in ethanol.

Author

Li Zhu-Bai, Lan Jian-Ting, Zhang Xue-Feng, Liu Yan-Li, and Li Yong-Feng

Subjects
MAGNETIC moments, ETHANOL, NANOCOMPOSITE materials, MAGNETIZATION, MAGNETS
Abstract

High energy ball milling (HEBM) is employed to produce nano-sized grains and particles. In this paper, the structure and magnetic properties are investigated in PrCo5 alloy for HEBM in an ethanol milling medium. With the increase of milling time, the grain size reduces and the coercivity increases. For a milling time of less than 30 min, the hysteresis loop of the aligned sample is very different from that of the un-aligned sample and it does not show a large decrease in magnetization slope, indicating a relatively good alignment of easy axes in particles due to the fact that the texture is nearly well preserved. However, when the milling time is further prolonged, the textured structure deteriorates in the powders. Even though exchange coupling exists between grains within the particle, the magnetic properties are exchange-decoupled between particles and the dipolar interaction results in a negative value of δm in the whole range of the magnetic field. [ABSTRACT FROM AUTHOR]

Published
2015
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