Effect of MnO on the Dielectric Properties of Nb-SrTiO3 Ceramics for Capacitor Applications

Autor: Cécile Autret-Lambert, Samir Merad, Sonia De Almeida-Didry, Sylvain Roger, François Gervais

Publikováno v: ACS Applied Engineering Materials. 1:68-79

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e142b218ba443870b23897661a26eb5c
https://doi.org/10.1021/acsaenm.2c00013

Central role of TiO2 anatase grain boundaries on resistivity of CaCu3Ti4O12-based materials probed by Raman spectroscopy

Autor: Christophe Honstettre, Mustapha Zaghrioui, François Gervais, Sonia De Almeida-Didry, Anthony Lucas, François Pacreau, Cécile Autret

Publikováno v: Solid State Sciences
Solid State Sciences, Elsevier, 2016, 61, pp.102-105. ⟨10.1016/j.solidstatesciences.2016.07.010⟩

This study focuses on characterization and control of grain boundaries to enhance the properties of CaCu 3 Ti 4 O 12 (CCTO) ceramics capacitors for industrial applications. A novel factor deals with TiO 2 anatase revealed by Raman scattering in grain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ae2d24b4991cc742f61d7a98b361d1a
https://doi.org/10.1016/j.solidstatesciences.2016.07.010

Structural, optical, magnetic and electrical properties of hematite (α-Fe2O3) nanoparticles synthesized by two methods: polyol and precipitation

Autor: Sonia De Almeida-Didry, Cécile Autret-Lambert, Salah Ammar, Hanen Letifi, Abdellatif Gadri, R. Bargougui, Houda Mansour, B. Negulescu

Publikováno v: Applied physics. A, Materials science & processing
Applied physics. A, Materials science & processing, Springer Verlag, 2017, 123 (12), ⟨10.1007/s00339-017-1408-1⟩

Hematite (α-Fe2O3) nanoparticles have been successfully synthesized via two methods: (1) polyol and (2) precipitation in water. The influence of synthesis methods on the crystalline structure, morphological, optical, magnetic and electrical properti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61796214d1992939f0e3dd7324489b5e
https://hal.archives-ouvertes.fr/hal-01741579

Comparative studies of pure, Sr-doped, Ni-doped and co-doped CaCu 3 Ti 4 O 12 ceramics: Enhancement of dielectric properties

Autor: Sonia De Almeida-Didry, Cécile Autret, Salam Rhouma, Adel Megriche, Senda Said, Mohamed El Amrani

Publikováno v: Journal of Alloys and Compounds
Journal of Alloys and Compounds, Elsevier, 2017, 717, pp.121-126. ⟨10.1016/j.jallcom.2017.05.053⟩

The CaCu 3 Ti 4 O 12 ceramic, CCTO, remains as the best material due to its high dielectric constant. In this context, Sr-doped CCTO, Ni-doped CCTO and Sr,Ni co-doped CCTO ceramics were prepared by the solid-state reaction method and were sintered at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7038483056e4fb380426825e1d0804cd
https://hal-univ-tours.archives-ouvertes.fr/hal-01794481

Investigations for the growth of large underdoped Bi2Sr2CaCu2O8+δ single crystals

Autor: Philippe Bourges, Fabien Giovannelli, Yvan Sidis, Sonia De Almeida-Didry, Isabelle Monot-Laffez, B. Pignon, Frédéric Schoenstein, Sébastien Pruvost

Publikováno v: Journal of Crystal Growth. 312:466-470

In order to study superconducting physical properties by neutron scattering technique, the necessity to obtain large and high quality optimally doped Bi 2 Sr 2 CaCu 2 O 8+ δ (Bi-2212) and underdoped Bi-2212 single crystals is prominent. Three routes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4ddcb1ac5e1d3b1179fd5f0e24bfae0
https://doi.org/10.1016/j.jcrysgro.2009.11.016