scholarly journals Structures and magnetic properties of iron silicide from adaptive genetic algorithm and first-principles calculations

2018 ◽  
Vol 124 (7) ◽  
pp. 073901 ◽  
Author(s):  
Zejin Yang ◽  
Shunqing Wu ◽  
Xin Zhao ◽  
Manh Cuong Nguyen ◽  
Shu Yu ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Magnetic Properties ◽  
First Principles ◽  
Iron Silicide ◽  
Adaptive Genetic Algorithm ◽  
First Principles Calculations

Fe–Si networks in Na2FeSiO4 cathode materials

2016 ◽  
Vol 18 (34) ◽  
pp. 23916-23922 ◽  
Author(s):  
P. Wu ◽  
S. Q. Wu ◽  
X. Lv ◽  
X. Zhao ◽  
Z. Ye ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Crystal Structures ◽  
Cathode Materials ◽  
First Principles ◽  
Low Energy ◽  
Adaptive Genetic Algorithm ◽  
First Principles Calculations ◽  
Network Search ◽  
Algorithm Search

Using a combination of adaptive genetic algorithm search, motif-network search scheme and first-principles calculations, we have systematically studied the low-energy crystal structures of Na2FeSiO4.

First principles calculations of optical and magnetic properties of SrFe 2 O 4 compound under pressure

2014 ◽  
Vol 378 (35) ◽  
pp. 2644-2650 ◽  
Author(s):  
Zohre Javdani ◽  
Hojat Allah Badehian ◽  
Hamdollah Salehi ◽  
Peiman Amiri
Keyword(s):  
Magnetic Properties ◽  
First Principles ◽  
First Principles Calculations ◽  
Optical And Magnetic Properties

Magnetism and Half-Metallicity in (100) Surface of Inverse Heusler Mn2CoSb

2014 ◽  
Vol 1015 ◽  
pp. 377-380
Author(s):  
Tao Chen ◽  
Ying Chen ◽  
Yin Zhou ◽  
Hong Chen
Keyword(s):  
Density Functional Theory ◽  
Magnetic Properties ◽  
First Principles ◽  
Heusler Alloy ◽  
Density Functional ◽  
Magnetic Moments ◽  
Surface States ◽  
First Principles Calculations ◽  
Half Metallicity ◽  
Functional Theory

Using the first-principles calculations within density functional theory (DFT), we investigated the electronic and magnetic properties of (100) surface of inverse Heusler alloy Mn2CoSb with five different terminations. Our work reveals that the surface Mn atom moves to vacuum while surface Co atom moves to slab. Moreover, duo to the reason that the surface atom lost half of the nearest atoms with respect to the bulk phase, resulting in the decrease of hybridization, the atom-resolved spin magnetic moments of surface atoms are enhanced. Further investigation on DOS and PDOS showed that half-metallicity was preserved only in SbSb-termination while was destroyed in MnCo-, MnSb-, MnMn-, and CoCo-termination due to the appearance of surface states.

Magnetic properties of rutile TiO2-1/6 from first-principles calculations

2010 ◽  
Vol 4 (8-9) ◽  
pp. 236-238 ◽  
Author(s):  
Guang-bing Han ◽  
Shu-jun Hu ◽  
Shi-shen Yan ◽  
Shi-shou Kang ◽  
Liang-mo Mei
Keyword(s):  
Magnetic Properties ◽  
First Principles ◽  
First Principles Calculations ◽  
Rutile Tio2

STABLE STRUCTURES, ELECTRIC AND MAGNETIC PROPERTIES OF NANOPARTICLES COn(n = 1-6) CLUSTERS: FIRST-PRINCIPLES CALCULATIONS

2013 ◽  
Vol 27 (15) ◽  
pp. 1362007
Author(s):  
JUN LIU ◽  
SHENG-BIAO TAN ◽  
HUI-NING DONG
Keyword(s):  
Magnetic Properties ◽  
Ground State ◽  
First Principles ◽  
Lower Energy ◽  
Magnetic Moments ◽  
Molecular Orbitals ◽  
First Principles Calculations ◽  
Half Metallicity ◽  
Ground State Structures ◽  
Stable Structures

The ground state geometric structures of the nanoparticles or clusters CO n(n = 1-6) were given based on the first-principles calculations. Then the magnetic properties of the clusters CO n(n = 1-6) and ( CO n)-2(n = 1-6) were calculated in system. Results show that their ground state structures are closely related to the numbers of O-ions. These clusters have no magnetic moments and half-metallicity if they are electroneutral. However, they have magnetic moments if they have positive or negative charges. The total magnetic moments of the clusters ( CO n)-2(n = 1-6, but n≠3) are all 2.0000 μB, and all their ions have contributions to the total magnetic moments. The main reason is that the molecular orbitals with lower energy filled with paired electrons and the molecular orbitals with higher energy are occupied by two electrons in parallel.

Calculated magnetic properties of co-doped CdTe(V, P): First-principles calculations

2017 ◽  
Vol 13 ◽  
pp. 87-90 ◽  
Author(s):  
F. Goumrhar ◽  
L. Bahmad ◽  
O. Mounkachi ◽  
A. Benyoussef
Keyword(s):  
Magnetic Properties ◽  
First Principles ◽  
First Principles Calculations ◽  
Co Doped

scholarly journals Ab-Initio Study of the Electronic and Magnetic Properties of Boron- and Nitrogen-Doped Penta-Graphene

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 816 ◽  
Author(s):  
Chao Zhang ◽  
Yu Cao ◽  
Xing Dai ◽  
Xian-Yong Ding ◽  
Leilei Chen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Charge Transfer ◽  
First Principles ◽  
Magnetic Moments ◽  
First Principles Calculations ◽  
Electronic Band ◽  
Magnetic Devices ◽  
Spin Polarized ◽  
Electronic Band Gap ◽  
Transfer Mechanisms

First-principles calculations were performed to investigate the effects of boron/nitrogen dopant on the geometry, electronic structure and magnetic properties of the penta-graphene system. It was found that the electronic band gap of penta-graphene could be tuned and varied between 1.88 and 2.12 eV depending on the type and location of the substitution. Moreover, the introduction of dopant could cause spin polarization and lead to the emergence of local magnetic moments. The main origin of the magnetic moment was analyzed and discussed by the examination of the spin-polarized charge density. Furthermore, the direction of charge transfer between the dopant and host atoms could be attributed to the competition between the charge polarization and the atomic electronegativity. Two charge-transfer mechanisms worked together to determine which atoms obtained electrons. These results provide the possibility of modifying penta-graphene by doping, making it suitable for future applications in the field of optoelectronic and magnetic devices.

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