Theoretical investigation of the Nanotube-metal junction (2008)
Börjesson, A., Zhu, W., Amara, H., Bichara, C., Ducastelle, F., Bolton, K.
Theoretical investigation of the Nanotube-metal junction (2008)
Börjesson, A., Zhu, W., Amara, H., Bichara, C., Ducastelle, F., Bolton, K.
Root-Growth Mechanism for Single-Wall Carbon Nanotubes (2001)
Ducastelle, F., Gavillet, J., Journet, C., Loiseau, A., Willaime, F.
Transitions ordre-désordre dans les alliages : structure électronique et diagrammes de phase (1994)
Pas de Résumé disponible
Weak beam study of antiphase boundaries in Fe-27%Al as a function of temperature (1994)
Barreteau, C., Loiseau, A., Ricolleau, C., Ducastelle, F.
The study by electron microscopy of the fringes due to planar defects such as antiphase boundaries (APB) is not a new problem, and the equations describing this phenomenon are well-known, but the...
Transitions ordre-désordre dans les alliages : structure électronique et diagrammes de phase (1994)
Pas de Résumé disponible
Weak beam study of antiphase boundaries in Fe-27%Al as a function of temperature (1994)
Barreteau, C., Loiseau, A., Ricolleau, C., Ducastelle, F.
The study by electron microscopy of the fringes due to planar defects such as antiphase boundaries (APB) is not a new problem, and the equations describing this phenomenon are well-known, but the...
Transitions ordre-désordre dans les alliages : structure électronique et diagrammes de phase (1994)
Pas de Résumé disponible
Weak beam study of antiphase boundaries in Fe-27%Al as a function of temperature (1994)
Barreteau, C., Loiseau, A., Ricolleau, C., Ducastelle, F.
The study by electron microscopy of the fringes due to planar defects such as antiphase boundaries (APB) is not a new problem, and the equations describing this phenomenon are well-known, but the...
First principles thermodynamics of alloys (1993)
We present a brief report on the methods of solid state physics (electronic structure, statistical thermodynamics) that allow us to discuss the phase stability of alloys and to determine their phase...
First principles thermodynamics of alloys (1993)
We present a brief report on the methods of solid state physics (electronic structure, statistical thermodynamics) that allow us to discuss the phase stability of alloys and to determine their phase...
First principles thermodynamics of alloys (1993)
We present a brief report on the methods of solid state physics (electronic structure, statistical thermodynamics) that allow us to discuss the phase stability of alloys and to determine their phase...
Caudron, R., Sarfati, M., Barrachin, M., Finel, A., Ducastelle, F., Solal, F.
In situ diffuse scattering of neutrons has been performed at various temperatures on Pd3V, Ni3V, Ni2V, Ni3Cr and Ni2Cr single crystals. The experimental data have been least squares fitted, in order...
Caudron, R., Sarfati, M., Barrachin, M., Finel, A., Ducastelle, F., Solal, F.
In situ diffuse scattering of neutrons has been performed at various temperatures on Pd3V, Ni3V, Ni2V, Ni3Cr and Ni2Cr single crystals. The experimental data have been least squares fitted, in order...
Caudron, R., Sarfati, M., Barrachin, M., Finel, A., Ducastelle, F., Solal, F.
In situ diffuse scattering of neutrons has been performed at various temperatures on Pd3V, Ni3V, Ni2V, Ni3Cr and Ni2Cr single crystals. The experimental data have been least squares fitted, in order...
THEORETICAL STUDY OF ANTIPHASE BOUNDARIES IN FCC ALLOYS (1990)
Finel, A., Mazauric, V., Ducastelle, F.
We have investigated the behaviour of non-conservative (100) antiphase boundaries in L12-ordered alloys, close to the congruent first order order-disorder transition. Very accurate inhomogeneous CVM...
THEORETICAL STUDY OF ANTIPHASE BOUNDARIES IN FCC ALLOYS (1990)
Finel, A., Mazauric, V., Ducastelle, F.
We have investigated the behaviour of non-conservative (100) antiphase boundaries in L12-ordered alloys, close to the congruent first order order-disorder transition. Very accurate inhomogeneous CVM...
THEORETICAL STUDY OF ANTIPHASE BOUNDARIES IN FCC ALLOYS (1990)
Finel, A., Mazauric, V., Ducastelle, F.
We have investigated the behaviour of non-conservative (100) antiphase boundaries in L12-ordered alloys, close to the congruent first order order-disorder transition. Very accurate inhomogeneous CVM...
FIM ATOM PROBE INVESTIGATION OF LONG PERIOD SUPERSTRUCTURES IN Cu3 ± xPd (1989)
Blavette, D., Chambreland, S., Loiseau, A., Planes, J., Ducastelle, F.
FIM atom-probe techniques have been used in order to investigate concentration modulations related to (001) APB's in Cu3 ± x Pd. Layer by layer analysis of (001) superstructure planes of a...
FIM ATOM PROBE INVESTIGATION OF LONG PERIOD SUPERSTRUCTURES IN Cu3 ± xPd (1989)
Blavette, D., Chambreland, S., Loiseau, A., Planes, J., Ducastelle, F.
FIM atom-probe techniques have been used in order to investigate concentration modulations related to (001) APB's in Cu3 ± x Pd. Layer by layer analysis of (001) superstructure planes of a...
FIM ATOM PROBE INVESTIGATION OF LONG PERIOD SUPERSTRUCTURES IN Cu3 ± xPd (1989)
Blavette, D., Chambreland, S., Loiseau, A., Planes, J., Ducastelle, F.
FIM atom-probe techniques have been used in order to investigate concentration modulations related to (001) APB's in Cu3 ± x Pd. Layer by layer analysis of (001) superstructure planes of a...
Landesman, J.P., Treglia, G., Turchi, P., Ducastelle, F.
In substoichiometric transition metal carbides and nitrides crystallizing with the NaCl structure, the vacancies, which appear on the metalloid FCC lattice only, may order under some conditions. The...
Long period structures in Ti1+xAl3- x alloys : experimental evidence of a devil's staircase ? (1985)
Loiseau, A., Van Tendeloo, G., Portier, R., Ducastelle, F.
Long period antiphase boundary structures based on the Ll2 type structure have been studied in Ti1+xAl3-x alloys by electron diffraction and high resolution electron microscopy. The domain of...
Landesman, J.P., Treglia, G., Turchi, P., Ducastelle, F.
In substoichiometric transition metal carbides and nitrides crystallizing with the NaCl structure, the vacancies, which appear on the metalloid FCC lattice only, may order under some conditions. The...
Long period structures in Ti1+xAl3- x alloys : experimental evidence of a devil's staircase ? (1985)
Loiseau, A., Van Tendeloo, G., Portier, R., Ducastelle, F.
Long period antiphase boundary structures based on the Ll2 type structure have been studied in Ti1+xAl3-x alloys by electron diffraction and high resolution electron microscopy. The domain of...
Landesman, J.P., Treglia, G., Turchi, P., Ducastelle, F.
In substoichiometric transition metal carbides and nitrides crystallizing with the NaCl structure, the vacancies, which appear on the metalloid FCC lattice only, may order under some conditions. The...
Long period structures in Ti1+xAl3- x alloys : experimental evidence of a devil's staircase ? (1985)
Loiseau, A., Van Tendeloo, G., Portier, R., Ducastelle, F.
Long period antiphase boundary structures based on the Ll2 type structure have been studied in Ti1+xAl3-x alloys by electron diffraction and high resolution electron microscopy. The domain of...
Tréglia, G., Ducastelle, F., Spanjaard, D.
We present here the extension to the ferromagnetic case of the perturbation method (limited to second order in U/ W ; U : Coulomb integral, W : d bandwidth) previously developed for taking into...
Tréglia, G., Ducastelle, F., Spanjaard, D.
We present here the extension to the ferromagnetic case of the perturbation method (limited to second order in U/ W ; U : Coulomb integral, W : d bandwidth) previously developed for taking into...
Tréglia, G., Ducastelle, F., Spanjaard, D.
We present here the extension to the ferromagnetic case of the perturbation method (limited to second order in U/ W ; U : Coulomb integral, W : d bandwidth) previously developed for taking into...
Perturbation treatment of correlations in transition metals (1980)
Treglia, G., Ducastelle, F., Spanjaard, D.
Correlation effects in transition metals are treated within the Hubbard model by perturbation theory limited to second order in U/W (U : Coulomb integral; W : bandwidth). We have calculated the...
Perturbation treatment of correlations in transition metals (1980)
Treglia, G., Ducastelle, F., Spanjaard, D.
Correlation effects in transition metals are treated within the Hubbard model by perturbation theory limited to second order in U/W (U : Coulomb integral; W : bandwidth). We have calculated the...
Perturbation treatment of correlations in transition metals (1980)
Treglia, G., Ducastelle, F., Spanjaard, D.
Correlation effects in transition metals are treated within the Hubbard model by perturbation theory limited to second order in U/W (U : Coulomb integral; W : bandwidth). We have calculated the...
ELECTRONIC STRUCTURE AND ORDERING (1977)
In most cases ordering processes in alloys are described by using simple models (in general the Ising model) in which phenomenological pairwise interactions are introduced. The problem is therefore...
Position des bords de bande dans un alliage désordonné avec désordre non diagonal (1977)
On considère un alliage désordonné décrit dans le cadre de l'approximation des liaisons fortes usuelle. On montre qu'en présence de désordre non diagonal les bords de bande intermédiaires...
ELECTRONIC STRUCTURE AND ORDERING (1977)
In most cases ordering processes in alloys are described by using simple models (in general the Ising model) in which phenomenological pairwise interactions are introduced. The problem is therefore...
Position des bords de bande dans un alliage désordonné avec désordre non diagonal (1977)
On considère un alliage désordonné décrit dans le cadre de l'approximation des liaisons fortes usuelle. On montre qu'en présence de désordre non diagonal les bords de bande intermédiaires...
ELECTRONIC STRUCTURE AND ORDERING (1977)
In most cases ordering processes in alloys are described by using simple models (in general the Ising model) in which phenomenological pairwise interactions are introduced. The problem is therefore...
Position des bords de bande dans un alliage désordonné avec désordre non diagonal (1977)
On considère un alliage désordonné décrit dans le cadre de l'approximation des liaisons fortes usuelle. On montre qu'en présence de désordre non diagonal les bords de bande intermédiaires...
COMMENTS ON THE ALLOY ANALOGY APPROXIMATION OF THE HUBBARD MODEL (1976)
Brouers, F., Ducastelle, F., Treglia, G., Brauwers, M., Giner, J.
We prove that within the alloy analogy approximation the non-degenerate Hubbard model has no ferromagnetic solution. We show that contrary to what has been claimed recently there is no CPA...
Discussion on the onset of antiferromagnetism in the hubbard model (1976)
Brouers, F., Ducastelle, F., Giner, J.
We calculate the response to a periodical external magnetic field of the magnetically disordered phase of the Hubbard model in the alloy analogy approximation. We investigate the behaviour of the...
COMMENTS ON THE ALLOY ANALOGY APPROXIMATION OF THE HUBBARD MODEL (1976)
Brouers, F., Ducastelle, F., Treglia, G., Brauwers, M., Giner, J.
We prove that within the alloy analogy approximation the non-degenerate Hubbard model has no ferromagnetic solution. We show that contrary to what has been claimed recently there is no CPA...
Discussion on the onset of antiferromagnetism in the hubbard model (1976)
Brouers, F., Ducastelle, F., Giner, J.
We calculate the response to a periodical external magnetic field of the magnetically disordered phase of the Hubbard model in the alloy analogy approximation. We investigate the behaviour of the...
COMMENTS ON THE ALLOY ANALOGY APPROXIMATION OF THE HUBBARD MODEL (1976)
Brouers, F., Ducastelle, F., Treglia, G., Brauwers, M., Giner, J.
We prove that within the alloy analogy approximation the non-degenerate Hubbard model has no ferromagnetic solution. We show that contrary to what has been claimed recently there is no CPA...
Discussion on the onset of antiferromagnetism in the hubbard model (1976)
Brouers, F., Ducastelle, F., Giner, J.
We calculate the response to a periodical external magnetic field of the magnetically disordered phase of the Hubbard model in the alloy analogy approximation. We investigate the behaviour of the...
Spin susceptibility in a narrow degenerate band (1975)
It has been shown that the static spin susceptibility of the Hubbard model of correlations for a narrow band calculated in the CPA remains finite for any simple-band model and the carrier number,...
Spin susceptibility in a narrow degenerate band (1975)
It has been shown that the static spin susceptibility of the Hubbard model of correlations for a narrow band calculated in the CPA remains finite for any simple-band model and the carrier number,...
Spin susceptibility in a narrow degenerate band (1975)
It has been shown that the static spin susceptibility of the Hubbard model of correlations for a narrow band calculated in the CPA remains finite for any simple-band model and the carrier number,...
LOCAL ENVIRONMENT EFFECTS IN DISORDERED ALLOYS (1974)
Brouers, F., Ducastelle, F., Gautier, F.
A simple method to describe the scattering produced by compact clusters embedded in a given medium is derived. It is applied to the calculation of the density of states in disordered alloys, which...
Spectral limits in the tight-binding approximation (1974)
A brief review is given of some basic theorems and methods which give estimates of the spectral limits in systems described within the tight-binding approximation. Applications to transition metals,...
The cohesive properties of transition metals and covalent crystals are discussed in a tight-binding scheme by using the moments of the density of states. Particular attention is paid to the cohesive...
LOCAL ENVIRONMENT EFFECTS IN DISORDERED ALLOYS (1974)
Brouers, F., Ducastelle, F., Gautier, F.
A simple method to describe the scattering produced by compact clusters embedded in a given medium is derived. It is applied to the calculation of the density of states in disordered alloys, which...
Spectral limits in the tight-binding approximation (1974)
A brief review is given of some basic theorems and methods which give estimates of the spectral limits in systems described within the tight-binding approximation. Applications to transition metals,...
The cohesive properties of transition metals and covalent crystals are discussed in a tight-binding scheme by using the moments of the density of states. Particular attention is paid to the cohesive...
LOCAL ENVIRONMENT EFFECTS IN DISORDERED ALLOYS (1974)
Brouers, F., Ducastelle, F., Gautier, F.
A simple method to describe the scattering produced by compact clusters embedded in a given medium is derived. It is applied to the calculation of the density of states in disordered alloys, which...
Spectral limits in the tight-binding approximation (1974)
A brief review is given of some basic theorems and methods which give estimates of the spectral limits in systems described within the tight-binding approximation. Applications to transition metals,...
The cohesive properties of transition metals and covalent crystals are discussed in a tight-binding scheme by using the moments of the density of states. Particular attention is paid to the cohesive...
Propriétés magnétiques des nitrures mixtes de vanadium et de chrome VxCr1-x N (1973)
Lacour-Gayet, P., Ducastelle, F., Costa, P.
Pour les nitrures CFC de la première série de transition, une discontinuité apparaît entre le nitrure de vanadium, qui est un métal paramagnétique et le nitrure de chrome, qui est...
Propriétés magnétiques des nitrures mixtes de vanadium et de chrome VxCr1-x N (1973)
Lacour-Gayet, P., Ducastelle, F., Costa, P.
Pour les nitrures CFC de la première série de transition, une discontinuité apparaît entre le nitrure de vanadium, qui est un métal paramagnétique et le nitrure de chrome, qui est...
Propriétés magnétiques des nitrures mixtes de vanadium et de chrome VxCr1-x N (1973)
Lacour-Gayet, P., Ducastelle, F., Costa, P.
Pour les nitrures CFC de la première série de transition, une discontinuité apparaît entre le nitrure de vanadium, qui est un métal paramagnétique et le nitrure de chrome, qui est...
CLUSTER EFFECTS IN DISORDERED ALLOYS (1972)
Two generalizations of the CPA using a multiple scattering approach and a diagrammatic technique respectively are studied. It is shown that the latter can be obtained through a generalized mean field...
CLUSTER EFFECTS IN DISORDERED ALLOYS (1972)
Two generalizations of the CPA using a multiple scattering approach and a diagrammatic technique respectively are studied. It is shown that the latter can be obtained through a generalized mean field...
CLUSTER EFFECTS IN DISORDERED ALLOYS (1972)
Two generalizations of the CPA using a multiple scattering approach and a diagrammatic technique respectively are studied. It is shown that the latter can be obtained through a generalized mean field...
PARAMAGNÉTISME ORBITAL ET ANISOTROPIE MAGNÉTIQUE DES MÉTAUX DE TRANSITION (1971)
Ducastelle, F., Cyrot-Lackmann, F.
On utilise un développement en moments de la densité d'états pour étudier dans l'approximation des liaisons fortes, le paramagnétisme orbital et son anisotropie, ainsi que l'anisotropie...
PARAMAGNÉTISME ORBITAL ET ANISOTROPIE MAGNÉTIQUE DES MÉTAUX DE TRANSITION (1971)
Ducastelle, F., Cyrot-Lackmann, F.
On utilise un développement en moments de la densité d'états pour étudier dans l'approximation des liaisons fortes, le paramagnétisme orbital et son anisotropie, ainsi que l'anisotropie...
PARAMAGNÉTISME ORBITAL ET ANISOTROPIE MAGNÉTIQUE DES MÉTAUX DE TRANSITION (1971)
Ducastelle, F., Cyrot-Lackmann, F.
On utilise un développement en moments de la densité d'états pour étudier dans l'approximation des liaisons fortes, le paramagnétisme orbital et son anisotropie, ainsi que l'anisotropie...
Modules élastiques des métaux de transition (1970)
Les modules élastiques des métaux de transition sont étudiés dans un modèle où l'énergie totale du cristal est écrite comme somme d'une contribution due à la bande d traitée dans...
Propriétés électroniques des hydrures des systèmes Ti-H et Zr-H (1970)
Ducastelle, F., Caudron, R., Costa, P.
Nous avons mesuré les chaleurs spécifiques électroniques, susceptibilités magnétiques et pouvoirs thermoélectriques des composés des systèmes Ti-H et Zr-H pour les fortes teneurs en...
Modules élastiques des métaux de transition (1970)
Les modules élastiques des métaux de transition sont étudiés dans un modèle où l'énergie totale du cristal est écrite comme somme d'une contribution due à la bande d traitée dans...
Propriétés électroniques des hydrures des systèmes Ti-H et Zr-H (1970)
Ducastelle, F., Caudron, R., Costa, P.
Nous avons mesuré les chaleurs spécifiques électroniques, susceptibilités magnétiques et pouvoirs thermoélectriques des composés des systèmes Ti-H et Zr-H pour les fortes teneurs en...
Modules élastiques des métaux de transition (1970)
Les modules élastiques des métaux de transition sont étudiés dans un modèle où l'énergie totale du cristal est écrite comme somme d'une contribution due à la bande d traitée dans...
Propriétés électroniques des hydrures des systèmes Ti-H et Zr-H (1970)
Ducastelle, F., Caudron, R., Costa, P.
Nous avons mesuré les chaleurs spécifiques électroniques, susceptibilités magnétiques et pouvoirs thermoélectriques des composés des systèmes Ti-H et Zr-H pour les fortes teneurs en...