Optical Sensor for Characterizing the Phase Transition in Salted Solutions

Autor: Rémy Claverie, Marc D. Fontana, Ivana Duričković, Patrice Bourson, Mario Marchetti, Jean-Marie Chassot

Publikováno v: Sensors, Vol 10, Iss 4, Pp 3815-3823 (2010)

We propose a new optical sensor to characterize the solid-liquid phase transition in salted solutions. The probe mainly consists of a Raman spectrometer that extracts the vibrational properties from the light scattered by the salty medium. The spectr

Externí odkaz: https://doaj.org/article/5e72294277d4407bbd4401f5671addbb

Raman scattering and fluorescent behaviors in Ba0.96Nd0.0267Ti(1-x)WxO3 (x = 0.00 and x = 0.05) ceramics

Autor: Ninel Kokanyan, Jemai Dhahri, Z. Raddaoui, Marc D. Fontana, S.E.L. Kossi

Publikováno v: Journal of Molecular Structure
Journal of Molecular Structure, Elsevier, 2021, 1230, pp.129939. ⟨10.1016/j.molstruc.2021.129939⟩

International audience; This paper reports on the Raman spectroscopy and the photoluminescence spectra of Nd- and W- doped BaTiO3 (BT) ceramics prepared using the molten-salt method. The samples were subjected to annealing at a temperature of 900 °C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a480a222957873c6863cc1d4e6041a3
https://hal.archives-ouvertes.fr/hal-03210792

Sub-THz Raman Response and Critical Dynamics in BaTiO3

Autor: T.H. Kauffmann, Ninel Kokanyan, Marc D Fontana

Publikováno v: Proceedings, Vol 26, Iss 1, p 26 (2019)

BaTiO3 (BTO) is considered as a textbook material for the description of structural phase transitions (SPT) and the appearance of ferroelectricity. [...]

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0af3551d0bc8f34d9b61a8e604d8e671
https://www.mdpi.com/2504-3900/26/1/26

Time evolution of Symmetry-forbidden Raman lines activated by photorefractivity

Autor: Edvard Kokanyan, David Chapron, Marc D. Fontana, Ninel Kokanyan, Laura Vittadello, Marco Bazzan

Publikováno v: Scientific Reports
Scientific Reports, Nature Publishing Group, 2019, 9 (1), ⟨10.1038/s41598-019-49801-x⟩
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)

Transmission Raman spectroscopy experiments were performed on iron doped congruent lithium niobate within two –in principle equivalent- configurations, namely Y(ZX)Y and Y(XZ)Y. While the former respects the Raman selection rules, the other configu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b67f792104216d083314c78d6cef374
https://pubmed.ncbi.nlm.nih.gov/31527741

Phase transformations in LiH2PO4 (LDP) revealed by Raman spectroscopy

Autor: Hassen Aroui, Rawdha Dekhili, T.H. Kauffmann, Marc D. Fontana

Publikováno v: Solid State Communications
Solid State Communications, Elsevier, 2018, 279, pp.22-26. ⟨10.1016/j.ssc.2018.04.016⟩

International audience; We investigate Raman scattering measurements on polycrystalline LiH2PO 4 (LDP) between 30 and 240°C, in order to detect phase transformations. The thermal behavior of main lines in different wavenumber ranges is discussed and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59bf06b9f61b8ebac402596a2401df20
https://hal-centralesupelec.archives-ouvertes.fr/hal-01803857/document