Concept

Crystallinity

Related publications (122)

Lanthanide luminescent mesomorphic complexes with macrocycles derived from diaza-18-crown-6

Four tetracatenar (L1–L4) and one hexacatenar (L5) ligands, derived from the diaza-18-crown-6 framework, are synthesized and characterized. In these ligands, the amine functions are fitted with benzoyloxybenzyl linker groups, attached either with a carbony ...

2005

Characterization of perovskite powders for cathode and oxygen membranes made by different synthesis routes

Jan Van Herle, Philippe Buffat, Sébastien Vaucher, Elena Suvorova Buffat, Nicolas Xanthopoulos

Strontium lanthanum manganite (LSM) and lanthanum ferrite (LSF) perovskite cathode and oxygen membrane materials were synthesized using different techniques: spray pyrolysis, a modified citrate route, oxalate and carbonate co-precipitations. The use of Ca, ...

2004

Simulation of the growth dynamics of amorphous and microcrystalline silicon

Arvind Shah, Julien Claude Bailat

The qualitative description of the major microstructure characteristics of microcrystalline silicon is achieved through a three-dimensional discrete dynamical growth model. The model is based on three fundamental processes that determine surface morphology ...

2004

Femtosecond-irradiation-induced refractive-index changes and channel waveguiding in bulk Ti3+: Sapphire

René Salathé, Christian Depeursinge, Tristan Colomb

We have employed femtosecond laser writing in order to induce refractive- index changes and waveguides in Ti3+-doped sapphire. Doping the sapphire crystal with an appropriate ion significantly reduces the threshold for creating structural changes, thus e ...

2004

Femtosecond-irradiation-induced refractive-index changes and channel waveguiding in bulk Ti3+: Sapphire

René Salathé, Christian Depeursinge, Tristan Colomb

We have employed femtosecond laser writing in order to induce refractive-index changes and waveguides in Ti3+-doped sapphire. Doping the sapphire crystal with an appropriate ion significantly reduces the threshold for creating structural changes, thus enab ...

2004

Quantitative study of Portland cement hydration by X-ray diffraction/Rietveld analysis and independent methods

Karen Scrivener, Emmanuel Gallucci

X-ray diffraction (XRD) is a powerful technique for the study of crystalline materials. The technique of Rietveld refinement now enables the amounts of different phases in anhydrous cementitious materials to be determined to a good degree of precision. Thi ...

2004

Structural phases of hexamethylenetetramine-pimelic acid (1/1): a unified description based on a stacking model

Gervais Chapuis

The thermotropic phase diagram of 1:1 co-crystals of hexamethylenetetramine and pimelic acid (heptanedioic acid) is investigated. Three crystalline phases are identified at ambient pressure. Phase I is disordered, as revealed by diffuse rods in its diffrac ...

2003

Local growth of sol-gel films by means of microhotplates

Nava Setter, Paul Muralt, Florian Calame, Nicolas Ledermann

PZT (PbZrx Ti1-xO3) thin films have been locally grown by means of sol-gel deposition and local annealing on microhotplates. The microhotplates were based on a stress compensated Si3N4 /SiO2 membranes as structural elements and contained tantalum silicide ...

2003

Atomistic structure of the Si(100)-SiO2 interface: A synthesis of experimental data

Alfredo Pasquarello, Angelo Bongiorno

We construct atomistic models of the Si(100)-SiO2 interface in accord with available experimental data. Combining classical and first-principles simulation methods, we generate transition structures from crystalline silicon to disordered SiO2. The generati ...

2003

Comparison of arsenic(V) and arsenic(III) sorption onto iron oxide minerals: Implications for arsenic mobility

Janet Gordon Hering

Arsenic derived from natural sources occurs in groundwater in many countries, affecting the health of millions of people. The combined effects of As(V) reduction and diagenesis of iron oxide minerals on arsenic mobility are investigated in this study by co ...

2003

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