The role of SIMS in the investigation of the complex crystal chemistry of mica minerals

2010 ◽  
Vol 7 ◽  
pp. 012023 ◽  
Author(s):  
L P Ottolini ◽  
E Schingaro ◽  
F Scordari ◽  
E Mesto ◽  
M Lacalamita
Keyword(s):  
Crystal Chemistry ◽  
Complex Crystal

The role of crystal chemistry in YbCu5−xAux

2015 ◽  
Vol 627 ◽  
pp. 20-24 ◽  
Author(s):  
M. Giovannini ◽  
I. Čurlík ◽  
F. Gastaldo ◽  
M. Reiffers ◽  
J.G. Sereni
Keyword(s):  
Crystal Chemistry

scholarly journals Role of Interlayer Distance on Cationic Diffusion of Nickel-Based Honeycomb Layered Tellurates

2021 ◽  
Author(s):  
Kartik Sau ◽  
Tamio Ikeshoji ◽  
Godwill Mbiti Kanyolo ◽  
Titus Masese
Keyword(s):  
Molecular Dynamics ◽  
Transport Properties ◽  
Crystal Chemistry ◽  
Interatomic Potential ◽  
Layered Oxides ◽  
Ionic Radii ◽  
Diffusion Channel ◽  
Exponential Increase ◽  
Potential Parameters

<b>Although the fascinatingly rich crystal chemistry of honeycomb layered oxides has been accredited as the propelling force behind their remarkable electrochemistry, the atomistic mechanisms surrounding their operations remain unexplored. Thus, herein, we present an extensive molecular dynamics study performed systematically using a refined set of inter-atomic potential parameters of <i>A</i><sub>2</sub>Ni<sub>2</sub>TeO<sub>6</sub> (where <i>A</i> = Li, Na, and K). We demonstrate the effectiveness of the Vashishta-Rahman form of the interatomic potential in reproducing various structural and transport properties of this promising class of materials and predict an exponential increase in cationic diffusion with larger interlayer distances. The simulations further demonstrate the correlation between broadened inter-layer (inter-slab) distances associated with the larger ionic radii of K and Na compared to Li and the enhanced cationic conduction exhibited in K<sub>2</sub>Ni<sub>2</sub>TeO<sub>6</sub> and Na<sub>2</sub>Ni<sub>2</sub>TeO<sub>6</sub> relative to Li<sub>2</sub>Ni<sub>2</sub>TeO<sub>6</sub>. Whence, our findings connect a wider bottleneck along the cationic diffusion channel within frameworks comprised of larger mobile cations to the improved cationic diffusion experimentally observed in honeycomb layered oxides. </b>

scholarly journals About this title - Crustal Architecture and Evolution of the Himalaya–Karakoram–Tibet Orogen

10.1144/sp481 ◽  
2019 ◽  
Vol 481 (1) ◽  
pp. NP-NP ◽  
Keyword(s):  
Structural Geology ◽  
Crystal Chemistry ◽  
Fluid Inclusions ◽  
Field Research ◽  
Laboratory Research ◽  
Laboratory Studies ◽  
Magmatic Evolution ◽  
Geodynamic Evolution ◽  
The Himalaya

This volume comprises 17 contributions that address the architecture and geodynamic evolution of the Himalaya–Karakoram–Tibet (HKT) system, covering wide aspects, from the active seismicity of the present day to the remnants of the Proterozoic orogen. The articles investigate the HKT system at different scales, blending field research with laboratory studies. The role of various lithospheric components and their inheritance in the geodynamic and magmatic evolution of the HKT system through time, and their links to global geological events, are studied in the field. The laboratory research focuses on the (sub-)micrometre scale, detailing micro-structural geology, crystal chemistry, geochronology, and the study of circulating fluids, their preservation (trapped in fluid inclusions) and their evolution, distribution, migration and interaction with the solid host. An orogen over 2000 km long can be understood only if the processes at the nanometre and micrometre scales are taken into account. The contributions in this volume successfully combine these scales to enhance our understanding of the HKT system.

Structural Problems and Non Stoichiometry in Thallium, Bismuth, and Lead Cuprates

1989 ◽  
Vol 156 ◽  
Author(s):  
B. Raveau ◽  
C. Michel ◽  
M. Hervieu ◽  
D. Groult ◽  
J. Provost
Keyword(s):  
Structural Properties ◽  
Crystal Chemistry ◽  
Lone Pair ◽  
Superconducting Properties ◽  
Structural Problems

ABSTRACTAn over view of the crystal chemistry of the layered bismuth, thallium and lead cuprates is presented here. The classification of these oxides is examined, and the problems of non stoichiometry, especially of extented defects and incommensurability of the structures, are discussed in connection with the superconducting properties of these materials. A particular attention is paid for the role of the lone pair cations in the structural properties of these oxides.

THE CRYSTAL CHEMISTRY OF THE KORNERUPINE-PRISMATINE SERIES. II. THE ROLE OF HYDROGEN

2009 ◽  
Vol 47 (2) ◽  
pp. 263-274 ◽  
Author(s):  
M. A. Cooper ◽  
F. C. Hawthorne ◽  
E. S. Grew ◽  
G. R. Rossman
Keyword(s):  
Crystal Chemistry
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