Electronic structures and impurity cluster features in Mg-Zn-Y alloys with a synchronized long-period stacking ordered phase
Electronic structures and impurity cluster features in Mg-Zn-Y alloys with a synchronized long-period stacking ordered phase
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同步长周期堆垛有序相Mg-Zn-Y合金的电子结构和杂质团簇特征
DOI:
10.1016/j.jallcom.2018.05.163
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发表时间:
2018
影响因子:
6.2
通讯作者:
and H. Sato
中科院分区:
文献类型:
--
作者:
S. Hosokawa;K. Maruyama;K. Kobayashi;J. R. Stellhorn;B. Paulus;A. Koura;F. Shimojo;T. Tsumuraya;M. Yamasaki;Y. Kawamura;S. Yoshioka;and H. Sato
Photoemission and inverse-photoemission spectroscopy (PES and IPES) measurements were carried out on polycrystalline Mg97Zn1Y2, Mg85Zn6Y9, and Mg75Zn10Y15alloys with a synchronized long-period stacking ordered phase together with non-doped Mg to investigate the valence- and conduction-band electronic structures, respectively. It was found from the valence-band PES spectra that the non-doped Mg includes at most 25% of an intrinsic oxidation portion. With increasing impurity concentration, the valence-band density of states (DOS) very slightly changes, while the conduction-band DOS drastically varies. The contributions of the impurity elements are clarified using a density functional theory calculation for the Mg85Zn6Y9alloy. The core-level PES measurements were also performed at the Mg 2s, 2p, Zn 3p, 3d, and Y 3dlevels to study the chemical natures of the corresponding elements. The Y 3dcore spectrum exhibits mostly three doublets in Mg97Zn1Y2, while mostly only one in the heavily doped alloys, reflecting a coexistence of three different sites of the Y atoms; ones in the Zn6Y8L12clusters, ones in their fragments, and isolated ones in Mg97Zn1Y2.
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影响因子:
2.5
作者:
M. Taniguchi;J. Ghijsen
通讯作者:
J. Ghijsen
影响因子:
1.2
作者:
Kawamura, Y;Hayashi, K;Masumoto, T
通讯作者:
Masumoto, T
DOI:
10.1016/j.msea.2016.06.069
发表时间:
2016-08
影响因子:
6.4
作者:
Kazuma Shiraishi;T. Mayama;M. Yamasaki;Y. Kawamura
通讯作者:
Kazuma Shiraishi;T. Mayama;M. Yamasaki;Y. Kawamura
影响因子:
6
作者:
Yamasaki, Michiaki;Matsushita, Masafumi;Kawamura, Yoshihito
通讯作者:
Kawamura, Yoshihito
影响因子:
9.4
作者:
Hagihara, K.;Kinoshita, A.;Umakoshi, Y.
通讯作者:
Umakoshi, Y.