Analysis of infrared-visible-near-ultraviolet reflectivity of conducting and superconducting oxides

Lobo, R. P. S. M.; Allançon, Christine; Gotor, F.J.; Bassat, Jean‐Marc; Loup, J.P.; Odier, P.; Dembinski, K.; Gervais, F.; Champeaux, Corinne; Marchet, Pascal; Catherinot, A.

doi:10.1016/0921-4534(94)91760-4

Cited by 6 publications

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Vibrational Spectroscopy for the Analysis of Geological and Inorganic Materials

Busca

Resini

2000

Encyclopedia of Analytical Chemistry

View full text Add to dashboard Cite

The vibrational spectroscopies are those producing the entire (or part) vibrational spectrum of a sample, i.e. the collection of transition energies between its vibrational states. The simplest way to cause vibrational excitation is to allow the chemical species in its vibrational ground state to absorb an energy quantum from electromagnetic radiation of an appropriate energy, i.e. in the medium infrared (IR) or in the far infrared (FIR) regions. Transmission–absorption IR spectroscopy comprises the analysis of the quanta that are actually absorbed by a polyatomic chemical species and those that are not absorbed (so are transmitted). Other IR techniques relate to the analysis of the radiation that is emitted, diffused, or reflected by the sample. Another way to obtain part or all of the vibrational spectrum of a chemical species is to look at the inelastic scattering of beams other than IR radiation. Raman spectrometry is the analysis of the ultraviolet (UV), visible or near infrared (NIR) radiation that is scattered inelastically by the sample. Inelastic neutron scattering (INS) is the analysis of the energy of formerly monochromatic neutron beams after inelastic scattering by the sample. Analyses of the number and energies of the vibrational transitions of the sample, detected by each technique, yield information on the geometric (molecular and crystallographic) structure of the sample and on the strength and nature of the chemical bonds it contains.

show abstract

Vibrational Spectroscopy for the Analysis of Geological and Inorganic Materials

Busca

Resini

2000

Encyclopedia of Analytical Chemistry

View full text Add to dashboard Cite

show abstract

Functionalization of SiC-based materials by a selective YBa2Cu3O7-δ coating via sol–gel route in order to optimize their optical properties

2015

View full text Add to dashboard Cite

SiC-based materials are good candidates for the application as solar receivers except concerning their optical properties. Indeed, considering the use at high temperature, materials used as solar receivers have to efficiently absorb the visible-near infrared waves (corresponding to solar spectral range) and simultaneously reflect the mid and far-infrared rays but SiC is absorbent in all the whole visible-infrared spectral domain. In this challenging work, a suitable YBa 2 Cu 3 O 7-δ oxide which can present appropriate optical properties is studied. It was synthesized following a sol-gel route and it was obtained with a high level of purity. YBa 2 Cu 3 O 7-δ pellets were realized and heat treated at different temperatures revealing that the higher the heat treatment is, the better the oxygen stoichiometry (7-δ) is and the smoothest the surface is. This directly acts on the YBa 2 Cu 3 O 7-δ optical properties. Considering these results, an YBa 2 Cu 3 O 7-δ coating was realized on SiC pellets by dip-coating. A homogenous and covering layer of about 10 μm was obtained presenting very promising optical properties which were predominant in the FIR-MIR range whereas absorptance was increased in NIR-visible range.

show abstract