Solubility of transition metal interstitials in proton conducting BaZrO3 and similar perovskite oxides

2016 ◽  
Vol 4 (21) ◽  
pp. 8105-8112 ◽  
Author(s):  
Jonathan M. Polfus ◽  
Marie-Laure Fontaine ◽  
Annett Thøgersen ◽  
Marit Riktor ◽  
Truls Norby ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
First Principles ◽  
Perovskite Oxides ◽  
Defect Chemistry ◽  
First Principles Calculations ◽  
Proton Conducting

The defect chemistry of foreign transition metals in perovskite oxides was investigated by first-principles calculations in combination with experiments with focus on Ni and Zn in Y-doped BaZrO3.

Surface defect chemistry of Y-substituted and hydrated BaZrO3 with subsurface space-charge regions

2016 ◽  
Vol 4 (19) ◽  
pp. 7437-7444 ◽  
Author(s):  
Jonathan M. Polfus ◽  
Tor S. Bjørheim ◽  
Truls Norby ◽  
Rune Bredesen
Keyword(s):  
Surface Layer ◽  
Space Charge ◽  
Space Charge Region ◽  
First Principles ◽  
Surface Defect ◽  
Surface Defects ◽  
Defect Chemistry ◽  
First Principles Calculations ◽  
Proton Conducting ◽  
Charged Species

First-principles calculations were utilized to elucidate the complete defect equilibria of surfaces of proton conducting BaZrO3, encompassing charged species adsorbed to the surface, defects in the surface layer as well as in the subsurface space-charge region and bulk.

DFT insights into oxygen vacancy formation and CH4 activation over CeO2 surfaces modified by transition metals (Fe, Co and Ni)

2018 ◽  
Vol 20 (17) ◽  
pp. 11912-11929 ◽  
Author(s):  
Dong Tian ◽  
Kongzhai Li ◽  
Yonggang Wei ◽  
Xing Zhu ◽  
Chunhua Zeng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Oxygen Vacancy ◽  
First Principles ◽  
Vacancy Formation ◽  
First Principles Calculations ◽  
Oxygen Vacancy Formation ◽  
Ni Modification

The effects of transition metal (Fe, Co and Ni) modification (adsorption, insertion and substitution) of CeO2 surfaces on oxygen vacancy formation and CH4 activation are studied on the basis of first principles calculations.

Ferromagnetic Dirac Half-Metallicity in Transition Metal Embedded Honeycomb Borophene

2021 ◽  
Author(s):  
Yanxia Wang ◽  
Xue Jiang ◽  
Yi Wang ◽  
Jijun Zhao
Keyword(s):  
Transition Metal ◽  
First Principles ◽  
Valence Electron ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Next Generation ◽  
Half Metallicity ◽  
Counting Rule ◽  
Spintronic Devices ◽  
Electron Counting

Exploring two-dimensional (2D) ferromagnetic materials with intrinsic Dirac half-metallicity is crucial for the development of next-generation spintronic devices. Based on first-principles calculations, here we propose a simple valence electron-counting rule...

Electronic structure modulation of NiS2 by transition metal doping for accelerating the hydrogen evolution reaction

2019 ◽  
Vol 7 (9) ◽  
pp. 4971-4976 ◽  
Author(s):  
Tongtong Wang ◽  
Xiaosong Guo ◽  
Jingyan Zhang ◽  
Wen Xiao ◽  
Pinxian Xi ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution Reaction ◽  
Systematic Study ◽  
First Principles ◽  
Transition Metal Doping ◽  
First Principles Calculations ◽  
Structure Modulation ◽  
Metal Doped

We give a systematic study of the HER catalytic activity of transition metal doped NiS2 by first principles calculations and experiments.

scholarly journals Spin Polarization Properties of Pentagonal PdSe2 Induced by 3D Transition-Metal Doping: First-Principles Calculations

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2339 ◽  
Author(s):  
Xiuwen Zhao ◽  
Bin Qiu ◽  
Guichao Hu ◽  
Weiwei Yue ◽  
Junfeng Ren ◽  
...  
Keyword(s):  
Transition Metal ◽  
Spin Polarization ◽  
First Principles ◽  
Magnetic Moments ◽  
First Principles Calculations ◽  
Density Distributions ◽  
Metal Atoms ◽  
Transition Metal Atoms ◽  
Theoretical Investigations ◽  
Densities Of States

The electronic structure and spin polarization properties of pentagonal structure PdSe2 doped with transition metal atoms are studied through first- principles calculations. The theoretical investigations show that the band gap of the PdSe2 monolayer decreases after introducing Cr, Mn, Fe and Co dopants. The projected densities of states show that p-d orbital couplings between the transition metal atoms and PdSe2 generate new spin nondegenerate states near the Fermi level which make the system spin polarized. The calculated magnetic moments, spin density distributions and charge transfer of the systems suggest that the spin polarization in Cr-doped PdSe2 will be the biggest. Our work shows that the properties of PdSe2 can be modified by doping transition metal atoms, which provides opportunity for the applications of PdSe2 in electronics and spintronics.

Spin polarization properties of benzene/graphene with transition metals as dopants: First principles calculations

2018 ◽  
Vol 439 ◽  
pp. 1158-1162 ◽  
Author(s):  
X.B. Yuan ◽  
Y.L. Tian ◽  
X.W. Zhao ◽  
W.W. Yue ◽  
G.C. Hu ◽  
...  
Keyword(s):  
Transition Metals ◽  
Spin Polarization ◽  
First Principles ◽  
First Principles Calculations
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