Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Philippe Boullay"'
Autor:
Anna Demchenko, Suvidyakumar Homkar, Corinne Bouillet, Christophe Lefèvre, François Roulland, Daniele Preziosi, Gilles Versini, Cédric Leuvrey, Philippe Boullay, Xavier Devaux, Nathalie Viart
Publikováno v:
Acta Materialia
Acta Materialia, 2022, 240, ⟨10.1016/j.actamat.2022.118337⟩
Acta Materialia, 2022, 240, ⟨10.1016/j.actamat.2022.118337⟩
International audience; Understanding the polarization switching mechanisms at play in ferroelectric materials is crucial for their exploitation in electronic devices. The conventional centrosymmetric reference structure-based mechanism which account
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::156fe4030be08cab9f1eceb9a13133e8
https://hal.science/hal-03774068
https://hal.science/hal-03774068
Publikováno v:
Journal of the American Ceramic Society. 92:3022-3032
BaO-rich phases with the nominal compositions Ba6NbxW3−xO15−x/2 (x=1, 2), 9L-Ba9Nb2W4O26, 12-layered (12L)-Ba4Nb2WO12, and 27L-Ba9Nb6WO27 were synthesized as polycrystalline powders using solid-state techniques and characterized by X-ray powder d
Autor:
Jana Bezjak, Danilo Suvorov, Aleksander Rečnik, Boštjan Jančar, Philippe Boullay, Ivana Radosavljevic Evans
Publikováno v:
Journal of the American Ceramic Society. 92:1806-1812
Polymorphic phase transitions in Ba4Nb2O9 were studied by thermal analyses, high-temperature transmission electron microscopy and X-ray powder diffractometry. Two stable polymorphs were isolated, low-temperature α-modification and high-temperature
Autor:
Philippe Boullay, D. Mercurio
Publikováno v:
Integrated Ferroelectrics. 62:149-154
The structural behaviour of the mixed-layer Aurivillius-phase Bi7Ti4NbO21 as a function of temperature is investigated by Neutron Powder Diffraction (NPD). The first dielectric anomaly is associated to the regularisation of the “Bi4Ti3O12 part” o
Publikováno v:
Journal of Solid State Chemistry. 132:308-314
A new series of layered ferrites (Tl{sub 1.5}Hg{sub 0.5})Sr{sub 3-x}Ba{sub x}Fe{sub 2}O{sub 9-{delta}} has been synthesized and characterized for the composition range 0 {le} x {le} 2. The structure has been refined from powder XRD data and shown to
Publikováno v:
Journal of the European Ceramic Society
Journal of the European Ceramic Society, Elsevier, 2007, 27, pp.3687-3690. ⟨10.1016/j.jeurceramsoc.2007.02.016⟩
Journal of the European Ceramic Society, Elsevier, 2007, 27, pp.3687-3690. ⟨10.1016/j.jeurceramsoc.2007.02.016⟩
Structure refinements in M II Bi 4 Ti 4 O 15 (M II = Ca, Ba), Bi 4− x Ba x Ti 3− x Nb x O 12 , (Na 0.5 Bi 0.5 ) 1− x Ba x Bi 4 Ti 4 O 15 and Bi 4 Ti 3 O 12 –PbTiO 3 systems are used to report structural features of relaxor Aurivillius phases.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8a6d71e9c4f4205925e590035e603fe
https://hal.archives-ouvertes.fr/hal-00177455
https://hal.archives-ouvertes.fr/hal-00177455
Publikováno v:
Acta Materialia
Acta Materialia, Elsevier, 2003, 51, pp.1424-1436. ⟨10.1016/S1359-6454(02)00536-0⟩
Acta materialia
Acta Materialia, Elsevier, 2003, 51, pp.1424-1436. ⟨10.1016/S1359-6454(02)00536-0⟩
Acta materialia
The atomic configurations at macrotwin interfaces between microtwinned martensite plates in Ni65Al35 material are investigated using transmission electron microscopy. The observed structures are interpreted in view of possible formation mechanisms fo