Some evidence for cation disorder in YBa2Cu3O7

1989 ◽  
Vol 40 (16) ◽  
pp. 11324-11325 ◽  
Author(s):  
J. C. Phillips
Keyword(s):  
Cation Disorder

Effects of A-site cation disorder on structure and magnetocaloric properties in Y and Sr codoped La2∕3Ca1∕3MnO3 compounds

2009 ◽  
Vol 105 (7) ◽  
pp. 07D713 ◽  
Author(s):  
Qing Ji ◽  
Bin Lv ◽  
P. F. Wang ◽  
H. L. Cai ◽  
X. S. Wu ◽  
...  
Keyword(s):  
Cation Disorder ◽  
Magnetocaloric Properties ◽  
A Site

Direct Evidence of Cation Disorder in Thermoelectric Lead Chalcogenides PbTe and PbS

2013 ◽  
Vol 23 (44) ◽  
pp. 5477-5483 ◽  
Author(s):  
Sofie Kastbjerg ◽  
Niels Bindzus ◽  
Martin Søndergaard ◽  
Simon Johnsen ◽  
Nina Lock ◽  
...  
Keyword(s):  
Direct Evidence ◽  
Lead Chalcogenides ◽  
Cation Disorder

scholarly journals LiBi3S5—A lithium bismuth sulfide with strong cation disorder

2016 ◽  
Vol 238 ◽  
pp. 60-67 ◽  
Author(s):  
Suliman Nakhal ◽  
Dennis Wiedemann ◽  
Bernhard Stanje ◽  
Oleksandr Dolotko ◽  
Martin Wilkening ◽  
...  
Keyword(s):  
Bismuth Sulfide ◽  
Cation Disorder

Evolution of structure and superconductivity of Li1−xTi2O4 single crystals without Ti cation disorder

1994 ◽  
Vol 235-240 ◽  
pp. 747-748 ◽  
Author(s):  
E. Moshopoulou ◽  
P. Bordet ◽  
A. Sulpice ◽  
J.J. Capponi
Keyword(s):  
Single Crystals ◽  
Cation Disorder ◽  
Evolution Of Structure

scholarly journals Understanding the Effect of Cation Disorder on the Voltage Profile of Lithium Transition-Metal Oxides

2016 ◽  
Vol 28 (15) ◽  
pp. 5373-5383 ◽  
Author(s):  
Aziz Abdellahi ◽  
Alexander Urban ◽  
Stephen Dacek ◽  
Gerbrand Ceder
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Voltage Profile ◽  
Cation Disorder

Cation-Disorder-Assisted Reversible Topotactic Phase Transition between Antifluorite and Rocksalt Toward High-Capacity Lithium-Ion Batteries

2020 ◽  
Vol 12 (39) ◽  
pp. 43605-43613
Author(s):  
Hiroaki Kobayashi ◽  
Takashi Tsukasaki ◽  
Yoshiyuki Ogasawara ◽  
Mitsuhiro Hibino ◽  
Tetsuichi Kudo ◽  
...  
Keyword(s):  
Phase Transition ◽  
Lithium Ion Batteries ◽  
High Capacity ◽  
Lithium Ion ◽  
Cation Disorder

scholarly journals Defects, Diffusion and Dopants in Sillimanite

Minerals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 857
Author(s):  
Raveena Sukumar ◽  
Poobalasuntharam Iyngaran ◽  
Navaratnarajah Kuganathan ◽  
Alexander Chroneos
Keyword(s):  
Pair Potential ◽  
Chemical Properties ◽  
Activation Energies ◽  
Aluminum Silicate ◽  
Intrinsic Defect ◽  
Ion Diffusion ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Cation Disorder ◽  
Industrial Preparation

Aluminum silicate based mineral “Sillimanite” (Al2SiO5) is important in the industrial preparation of aluminum-silicon alloys and cement. In the present study classical pair potential simulations are used to examine the intrinsic defect processes, diffusion pathways of Al3+ and O2− ions together with their activation energies and promising dopants on the Al and Si sites in Al2SiO5. The cation anti-site (Al-Si) defect cluster is calculated to be the most favorable defect, highlighting the cation disorder in this material, in agreement with the experiment. The cation disorder is important as this defect can change the mechanical and chemical properties of Al2SiO5. The Al3+ ions and O2− ions migrate in the c direction with corresponding activation energies of 2.26 eV and 2.75 eV inferring slow ion diffusion. The prominent isovalent dopants on the Al and Si sites are found to be the Ga and Ge, respectively, suggesting that they can be used to prevent phase transformation and tune the properties of sillimanite.

Increased Compressibility of Pseudobrookite-Type MgTi2O5Caused by Cation Disorder

Science ◽  
1997 ◽  
Vol 277 (5334) ◽  
pp. 1965-1967 ◽  
Author(s):  
Robert M. Hazen ◽  
Hexiong Yang
Keyword(s):  
Cation Disorder

Lewis-Base Adducts of Group 11 Metal(I) Compounds. LXIV Syntheses, Spectroscopy and Structures of Some 1 : 4 Adducts of Copper(I) and Silver(I) Perchlorates with Triphenylarsine and Triphenylstibine

1997 ◽  
Vol 50 (6) ◽  
pp. 539 ◽  
Author(s):  
Graham A. Bowmaker ◽  
Effendy ◽  
Robert D. Hart ◽  
John D. Kildea ◽  
Brian W. Skelton ◽  
...  
Keyword(s):  
Room Temperature ◽  
Far Infrared ◽  
Lewis Base ◽  
X Ray ◽  
Cation Disorder ◽  
Structure Determinations ◽  
Consistent Picture ◽  
Far Infrared Spectra

Syntheses and room-temperature single crystal X-ray structure determinations are recorded for adducts [M(EPh3)4] (ClO4), M = Cu, E = As (1), Sb (2); M = Ag, E = As (3), Sb (4), enabling comparison with analogous, previously studied MP4 and MN4 environments. The four complexes so characterized all crystallize in the familiar rhombohedral R-3 array (a ≈ 14·4, c ≈ 52 Å, hexagonal setting) with the metal and chlorine atoms located on crystallographic threefold axes. In these arrays Cu–E (axial, off axis) are 2·493(2), 2·533(1) for (1), and 2·572(1), 2·577(1) Å for (2), the disparity in the two independent M-E distances being diminished relative to those of previously studied phosphorus analogues, perhaps in consequence of increasing E size. In (3) and (4), some cation disorder is evident in respect of the ligand pnictide atom (E); for the major components Ag-E are 2·652(3), 2·680(2) in (3); 2·732(2), 2·7295(8) Å in (4). Problems associated in defining the metal atom environment geometries in the latter are, nevertheless, more satisfactorily overcome in two further determinations of nitrate salts: [Ag(SbPh3)4] (NO3) (5) is of the rhombohedral family with no cation core disorder, Ag–E (axial, off axis) being 2·720(4), 2·725(2) Å, while the structural characterization of a 1 : 4 triphenylarsine adduct of silver nitrate is recorded as its tetraethanol solvate, namely [Ag(AsPh3)4] (NO3).~ 4C2H5OH(6), monoclinic, C2/c, a 18·373(4), b 20·786(5), c 21·070(8) Å, β 108·18(3)°, Z = 4 f.u. The silver atom of the [Ag(AsPh3)4]+cation unusually lies on a crystallographic 2 (rather than a 3 ) axis of the incipiently23 (T) array, with Ag-As 2·649(2), 2·650(2) Å and As-Ag-As ranging from 108·22(4) to 111·41(6)°. The structure determination of a chloroform solvate of (2), denoted (2a), of low precision, is noted, together with the structure of an interesting artefact, isomorphous with the rhombohedral oxoanion array, modelled as [Ag(PPh3)4]2 (SiF6).py (7). Bands in the far-infrared spectra of [M(AsPh3)4] (ClO4) are assigned to v(MAs) vibrations at 119 (M = Cu) and 103 cm¯1 (M = Ag); this produces a more consistent picture of the variation in the wavenumbers of the v(ME) modes in [M(EPh3)4]+ compounds than was available previously.

scholarly journals Charge Localization, Stabilization, and Hopping in Lead Halide Perovskites: Competition between Polaron Stabilization and Cation Disorder

2019 ◽  
Vol 4 (8) ◽  
pp. 2013-2020 ◽  
Author(s):  
Francesco Ambrosio ◽  
Daniele Meggiolaro ◽  
Edoardo Mosconi ◽  
Filippo De Angelis
Keyword(s):  
Charge Localization ◽  
Cation Disorder ◽  
Halide Perovskites ◽  
Lead Halide
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