Recherche

Afficher tous les résultats pour

Accueil

Personne

Philippe Buffat

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (40)

Page 2 sur 2

Search for Magnetoelectric Coupling at the Fe-57/Hf0.5Zr0.5O2 Interface Using Operando Synchrotron Mossbauer Spectroscopy

Philippe Buffat

Multiferroic materials with coexisting ferroelectric and ferromagnetic orders have attracted much attention due to the magnetoelectric coupling opening alternative prospects for electronic devices. Composite multiferroics containing separate ferroelectric ...

2022

Effects of Kr and Xe ion irradiation on the structure of Y2O3 nanoprecipitates in YBCO thin film conductors

Philippe Buffat, Elena Suvorova Buffat

The response of Y2O3 nanoprecipitates in a 1-mu m YBa2Cu3O7-x layer from a superconducting wire Ag/YBCO/buffer metal oxides/Hastelloy to 107 MeV Kr and 167 MeV Xe ion irradiation was investigated using a combination of transmission electron microscopy, dif ...

2018

Characterisation of phases in nanostructured, multilayered titanium alloys by analytical and high-resolution electron microscopy

Philippe Buffat

Surface processing of a Ti–6Al–4V alloy led to a complex multilayered microstructure containing several phases of the Ni–Ti–P–Al–O system, which improves the mechanical and tribological surface properties. The microstructure, chemical and phase composition ...

2009

Structure analysis of the YBCO layer in Ag/YBCO/metal oxide buffer/Hastelloy composite tape before and after 107 MeV Kr17+ irradiation

Philippe Buffat, Elena Suvorova Buffat, Marco Cantoni

The effects of 107 MeV Kr-84(17+) ion irradiation on YBa2Cu3O7-x-based second-generation coated conductors were investigated using a combination of transmission electron microscopy, diffraction and X-ray energy dispersive spectrometry. Defects 3-5 nm in di ...

Pergamon-Elsevier Science Ltd2014

Analytical transmission electron microscopy and electron diffraction for characterization of multiphase Ni-P-Ti surface layer on Ti-6Al-4V alloy

Philippe Buffat

The microstructure, chemical and phase composition of the hard Ni-P-Ti layer formed on the Ti-6Al-4V alloy after duplex surface treatment were investigated by light microscopy, X-ray diffraction, scanning electron microscopy and analytical/high-resolution ...

2006

Cross section investigations of compositions and sub-structures of tips obtained by focused electron beam induced deposition

Philippe Buffat, Patrik Willi Hoffmann, Christian Santschi, Marco Cantoni, Johann Michler, Danièle Laub, Ivo Utke

The spatial evolution of compositions and sub-structures inside focused-electron-beam-deposited tips from dicobalt-octacarbonyl Co2(CO)8 precursor at 25 keV and varying beam current (20 pA - 3 A) is extensively studied for the first time by means of energy ...

2005

Stability of Ag nanoparticles dispersed in amphiphilic organic matrix

Philippe Buffat, Elena Suvorova Buffat

Nano- and thin-film technologies based on novel systems associating metals particles to polymer matrix open a broad range of different applications. Such composites were found to be more efficient and safe, for instance, in biomedical needs. The Ag/poly(N- ...

2005

Structure of precipitates and orientation relationships in Al, Ge, Mo-doped higher manganese silicide crystals

Philippe Buffat, Elena Suvorova Buffat, Marco Cantoni

The structure of Al, Ge, Mo-doped Higher Manganese Silicide (HMS) crystals with the general formulas Mn(Si0.99Ge0.01)(1.75), Mn(Si0.995Ge0.005)(1.75) and (Mn0.98Mo0.02)(Si0.98Ge0.02)(1.75)Al-0.01 was investigated by scanning and transmission electr ...

Taylor & Francis Ltd2017

Microstructure and properties of hard layers formed by duplex surface treatment containing nickel and phosphorus on a titanium-base alloy

Philippe Buffat

Microstructure and chemical composition of the hard Ni–P–Ti layer formed on the Ti–6Al–4V alloy after duplex surface treatment were investigated by light microscopy, X-ray diffraction, scanning electron microscopy and analytical/high resolution transmissio ...

2005

Transmission electron microscopy and atomic force microscopy characterisation of titanium-base alloys nitrided under glow discharge

Philippe Buffat

The microstructure of titanium alloys (Ti–1Al–1Mn, Ti–6Al–4V) nitrided under glow discharge was characterised using light microscopy, X-ray diffraction and analytical electron microscopy. The investigations revealed a complex multilayered microstructure pr ...

2005

Preparation and structural characterization of thin-film CdTe/CdS heterojunctions

Philippe Buffat, Danièle Laub

The structural characteristics of CdTe/CdS thin-film heterojunctions are investigated. The studied heterojunctions were obtained by successive thermal evaporation under vacuum onto unheated SnO2 coated glass substrates of CdS and CdTe films, respectively. ...

2006

Erratum to “Preparation, stabilization and characterization of TiO2 on thin polyethylene films (LDPE). Photocatalytic applications"

Albert Renken, Juan Kiwi, Philippe Buffat, Lioubov Kiwi, Andrzej Kulik, Danièle Laub, Kyumin Lee

2007

The influence of Ti doping methods on the high field performance of (Nb, Ta, Ti)3Sn multifilamentary wires using Osprey bronze

Philippe Buffat, Marco Cantoni, Davide Uglietti

We have analyzed the influence of the two different Ti doping methods on the superconducting properties of bronze processed (Nb,Ta,Ti)3Sn multifilamentary wires with identical configuration, consisting of a Nb7.5wt.%Ta alloy processed to 14641 filaments of ...

IEEE Institute of Electrical and Electronics Engineers2005

Electron microscopy for investigation of order/disorder in bone structure

Philippe Buffat, Elena Suvorova Buffat

2005

Preparation, stabilization and characterization of TiO2 on thin polyethylene films (LDPE): Photocatalytic applications

Philippe Buffat, Albert Renken, Juan Kiwi, Lioubov Kiwi, Andrzej Kulik, Danièle Laub, Kyumin Lee

An innovative way to fix preformed nanocrystalline TiO2 on low-density polyethylene film (LDPE-TiO2) is presented. The LDPE-TiO2 film was able to mediate the complete photodiscoloration of Orange II using about seven times less catalyst than a TiO2 suspens ...

2007

Comment on "Structural and Mossbauer studies of evaporated Fe100-x Pd-x thin films" by A. Laggoun, A. Guittoum, S. Bahamida, M. Boudissa and A. Fnidiki

Philippe Buffat

The paper "Structural and Mossbauer studies of evaporates Fe100-x Pd-x thin films" by A. Laggoun et al. contains interpretation errors of XRD patterns and therefore cast some heavy doubt on the actual phases present in the Fe-Pd films. ...

EDP Sciences2016

Pathological mineralization of cardiac valves: Causes and mechanism

Philippe Buffat, Elena Suvorova Buffat

Objective. Mechanism of calcification of cardiac valves was investigated through a comparative characterization of structure, morphology, and size of hydroxyapatite (HAP) crystals formed in mineral deposit on cardiac valves, bone tissue, and crystals synth ...

2005

Study of new sheep bone and Zn/Ca ratio around TiAlV screw: PIXE-RBS analysis

Philippe Buffat, Danièle Laub

This study reports on in vivo particle induced X-ray emission (PIXE) measurements combined with Rutherford backscattering spectroscopy (RBS) analyses of new remodeled sheep bone formed around TiAIV screws. The implants (screws) were anodized by a modified ...

2008

Zabinskiite, ideally Ca(Al0.5Ta0.5)(SiO4)O, a new mineral of the titanite group from the Pilawa Gorna pegmatite, the Gory Sowie Block, southwestern Poland

Philippe Buffat

Zabinskiite, ideally Ca(Al0.5Ta0.5)(SiO4) O, was found in a Variscan granitic pegmatite at Pilawa Gorna, Lower Silesia, SW Poland. The mineral occurs along with (Al, Ta, Nb)-and (Al, F)-bearing titanites, a pyrochlore-supergroup mineral and a K-mica in co ...

2017

Influence of metamorphic buffer design on electrophysical and structural properties of MHEMT nanoheterostructures In0.7Al0.3As/In0.7Ga0.3As/In0.7Al0.3As/GaAs

Philippe Buffat, Benjamin Dwir, Elena Suvorova Buffat

Metamorphic InxAl1-xAs buffer design influence on electrophysical and structural properties of the MHEMT nanoheterostructures was investigated. Electrophysical properties of the nanoheterostructures were characterized by Hall measurements, while the struc ...

2012