Giant magnetic moment of the core-shell Co13@Mn20 clusters: First-principles calculations

2011 ◽  
Vol 32 (11) ◽  
pp. 2474-2478 ◽  
Author(s):  
Qun Jing ◽  
Hai-Bin Cao ◽  
Gui-Xian Ge ◽  
Yuan Xu Wang ◽  
Hong-Xia Yan ◽  
...  
2020 ◽  
Vol 34 (25) ◽  
pp. 2050214 ◽  
Author(s):  
Chang Liu ◽  
Enling Li ◽  
Tuo Peng ◽  
Kaifei Bai ◽  
Yanpeng Zheng ◽  
...  

In this paper, electronic and optical properties of GaN/InN core/shell nanowires (CSNWs) have been theoretically investigated through the first principles calculations. The binding energy of In and N atoms on surface of six crystal planes along the [Formula: see text]-axis of GaN nanowires are all negative, which indicate that In and N atoms can be effectively deposited on the surface of GaN nanowires and preparing GaN/InN CSNWs is feasible theoretically. Calculation results of electronic properties indicate that the core/shell ratio and diameter of GaN/InN CSNWs have significant effect on the band structure, bandgap can be effectively adjusted when keeping the number of GaN layers unchanged and changing the number of InN layers. Moreover, with the increase in the number of InN layers, the absorption spectrum of GaN/InN CSNW has significant redshift and few weak absorption peaks appear in the visible light region.


2017 ◽  
Vol 19 (23) ◽  
pp. 15021-15029 ◽  
Author(s):  
Yusheng Wang ◽  
Nahong Song ◽  
Min Jia ◽  
Dapeng Yang ◽  
Chikowore Panashe ◽  
...  

First principles calculations based on density functional theory were carried out to study the electronic and magnetic properties of C2N nanoribbons (C2NNRs).


2019 ◽  
Vol 33 (07) ◽  
pp. 1950074
Author(s):  
Bin Yang ◽  
Zhinan Li ◽  
Fanghui Zhu ◽  
Liwu Jiang ◽  
Chuan-Hui Zhang

The electronic structure, martensitic transformation and magnetic properties of [Formula: see text] Heusler alloy were studied by first-principles calculations. It is found that the stable structure of austenitic [Formula: see text] is the ferromagnetic [Formula: see text] structure, and a martensitic transformation is possible to occur with the distortion degree of 1.26. By the analysis of the electronic structure, some results of magnetic moment are consistent with previous theoretical calculations.


ACS Omega ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 864-870
Author(s):  
Shulin Zhong ◽  
Bo Xu ◽  
Ao Cui ◽  
Siyu Li ◽  
Susu Liao ◽  
...  

2016 ◽  
Vol 845 ◽  
pp. 162-165
Author(s):  
Mikhail A. Zagrebin ◽  
Vladimir V. Sokolovskiy ◽  
Vasiliy D. Buchelnikov ◽  
Marina A. Klyuchnikova

The composition dependences of the density of states in Co- and Cr-doped Ni-Mn-Sn Heusler alloys are investigated by using first principles calculations. The off-stoichiometric compositions are realized by the coherent-potential approximation. We have shown that the spin polarization decreases with increasing Cr and Co concentrations. While, the total magnetic moment was found to decrease (increase) with increasing Cr (Co) concentration, respectively.


2013 ◽  
Vol 710 ◽  
pp. 174-177
Author(s):  
Lei Feng ◽  
Fei Wang ◽  
Ju Gao ◽  
Jin Zhi Yin ◽  
Xiu Yan Luo

A new Heusler alloyV2NiGawith Hg2CuTi-type structure was investigated by first-principles calculations. The band structures and magnetic properties have been studied. The alloy has a total magnetic moment of 1.05μBper unit cell on first-principles calculations which is in agreement with theSlaterPauling(SP) rule. The magnetic moments ofV(1) atom andV(2) atom are 1.28μBand-0.44μBrespectively, so the alloy is a ferrimagnetism.


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