Lorentz TEM study of the magnetic microstructure in near-eutectoid Co-Pt alloys
Lorentz TEM study of the magnetic microstructure in near-eutectoid Co-Pt alloys
复制标题
近共析 Co-Pt 合金磁性微观结构的洛伦兹 TEM 研究
DOI:
10.1016/j.jmmm.2019.02.036
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发表时间:
2019
影响因子:
2.7
通讯作者:
De Graef, Marc
中科院分区:
文献类型:
--
作者:
Kashyap, Isha;Vetter, Eric P.;Floro, Jerrold A.;De Graef, Marc
In this paper, we report Lorentz Transmission Electron Microscopy (LTEM) observations of magnetic domain structures in a near-eutectoid Co 40 Pt 60 alloy. The crystallographic microstructure is characterized using conventional bright field/dark field TEM imaging. The magnetic induction orientation inside magnetic domains is extracted from Fresnel through-focus images by reconstructing the phase of electron wave using the transport-of-intensity equation. The alloy shows a nano-chessboard pattern composed of the L1 0 tetragonal and L1 2 cubic phases. The magnetization distribution in four neighboring L1 0 tiles in the nano-chessboard structure is found to follow a vortex/anti-vortex configuration to reduce the magnetostatic and magneto-crystalline anisotropy energies. An unconventional domain wall referred to as an inter phase magnetic domain wall (IPMDW) is observed at the inter-phase boundaries of L1 0 and L1 2 phases. Magnetic domain walls in other microstructures (tweed microstructure, macro-twinned structure, coarsened L1 0 plates) are also documented.
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影响因子:
2.8
作者:
Isha Kashyap;M. De Graef
通讯作者:
M. De Graef
影响因子:
9.4
作者:
Le Bouar, Y;Loiseau, A;Khachaturyan, AG
通讯作者:
Khachaturyan, AG
DOI:
--
发表时间:
2004
期刊:
J.Appl.Phys. 96
影响因子:
--
作者:
T.Sannomiya;J.Shi;Y.Nakamura;O.Nittono
通讯作者:
O.Nittono
DOI:
10.1017/cbo9780511615092.010
发表时间:
2003-04
期刊:
--
影响因子:
--
作者:
M. Graef
通讯作者:
M. Graef
影响因子:
2.7
作者:
Priya Ghatwai;E. Vetter;M. Hrdy;W. Soffa;J. Floro
通讯作者:
J. Floro