scholarly journals Zn and Sb interaction and oxygen defect chemistry in dense SnO2 ceramics co-doped with ZnO and Sb2O5

2014 ◽  
Vol 122 (1426) ◽  
pp. 421-425 ◽  
Author(s):  
Minako HASHIGUCHI ◽  
Isao SAKAGUCHI ◽  
Shunichi HISHITA ◽  
Naoki OHASHI
Keyword(s):  
Defect Chemistry ◽  
Oxygen Defect ◽  
Co Doped

The Oxygen Defect Chemistry of La2−xSrxCuO4−x/2+δ

1990 ◽  
Vol 209 ◽  
Author(s):  
Elizabeth J. Opila ◽  
Harry L. Tuller
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Oxygen Content ◽  
Defect Chemistry ◽  
Oxygen Stoichiometry ◽  
Oxygen Defect ◽  
Defect Model ◽  
Strontium Concentration ◽  
Partial Pressures ◽  
Equilibrium Oxygen

ABSTRACTThe equilibrium oxygen stoichiometry of La2−xSrxCuO4±y (x=O, 0.2, 0.4, and 1.0) has been determined by TGA at temperatures between 800 and 1050°C and oxygen partial pressures between 1 and 10−4 atmospheres. The changes in oxygen content with temperature, oxygen partial pressure, and strontium concentration are evaluated in terms of a defect model.

Dielectric properties and defect chemistry of La and Tb co-doped BaTiO3 ceramics

2016 ◽  
Vol 681 ◽  
pp. 128-138 ◽  
Author(s):  
Da-Yong Lu ◽  
Yan-Yan Peng ◽  
Xin-Yu Yu ◽  
Xiu-Yun Sun
Keyword(s):  
Dielectric Properties ◽  
Defect Chemistry ◽  
Co Doped

Oxygen defect chemistry for the reversible transformation of titanates for sizeable potassium storage

2020 ◽  
Vol 8 (34) ◽  
pp. 17550-17557
Author(s):  
Cheng-Yen Lao ◽  
Qiyao Yu ◽  
Jun Hu ◽  
Neng Li ◽  
Giorgio Divitini ◽  
...  
Keyword(s):  
Thermodynamic Limit ◽  
Defect Chemistry ◽  
Potassium Ion ◽  
Oxygen Defect ◽  
Reversible Transformation ◽  
Layered Titanate ◽  
Kinetic Boundary

An oxygen-deficient loose-layered titanate (K(TiO1.875)4OH (LL-KTO)) is prepared to push the kinetic boundary and approached the thermodynamic limit for potassium-ion batteries.

Fermi Level Pinning in Co‐doped BaTiO 3 : Part II. Defect Chemistry Models

2021 ◽  
Author(s):  
Preston C. Bowes ◽  
Gyung Hyun Ryu ◽  
Jonathon N. Baker ◽  
Elizabeth C. Dickey ◽  
Douglas L. Irving
Keyword(s):  
Fermi Level ◽  
Defect Chemistry ◽  
Fermi Level Pinning ◽  
Co Doped

scholarly journals Boron-oxygen defect in Czochralski-silicon co-doped with gallium and boron

2012 ◽  
Vol 100 (4) ◽  
pp. 042110 ◽  
Author(s):  
M. Forster ◽  
E. Fourmond ◽  
F. E. Rougieux ◽  
A. Cuevas ◽  
R. Gotoh ◽  
...  
Keyword(s):  
Oxygen Defect ◽  
Czochralski Silicon ◽  
Co Doped

Dislocations, Ordering and Antiferromagnetic Domains in MnO

1970 ◽  
Vol 28 ◽  
pp. 522-523
Author(s):  
D. J. Barber ◽  
R. G. Evans
Keyword(s):  
Electron Diffraction ◽  
Single Crystal ◽  
Optical Microscopy ◽  
Defect Chemistry ◽  
Magnetic Structures ◽  
Optically Transparent ◽  
Magnetic Features ◽  
Antiferromagnetic Domains

Manganese (II) oxide, MnO, in common with CoO, NiO and FeO, possesses the NaCl structure and shows antiferromagnetism below its Neel point, Tn∼ 122 K. However, the defect chemistry of the four oxides is different and the magnetic structures are not identical. The non-stoichiometry in MnO2 small (∼2%) and below the Tn the spins lie in (111) planes. Previous work reported observations of magnetic features in CoO and NiO. The aim of our work was to find explanations for certain resonance results on antiferromagnetic MnO.Foils of single crystal MnO were prepared from shaped discs by dissolution in a mixture of HCl and HNO3. Optical microscopy revealed that the etch-pitted foils contained cruciform-shaped precipitates, often thick and proud of the surface but red-colored when optically transparent (MnO is green). Electron diffraction and probe microanalysis indicated that the precipitates were Mn2O3, in contrast with recent findings of Co3O4 in CoO.

Sign in / Sign up

Export Citation Format

Share Document