Abstract
Periodic anti-phases are ordered structures in which the movable elements alternates regularly between two available sites, in one or two directions. We study in the present work two particular properties of periodic anti-phases : 1- The irrationality or the continuous variation of the periodic anti-phase. 2- The reversible transition between the anti-phase state and that of long distance order. We have calculated the distribution of the diffracted amplitudes for the 'rational statistic' model. They can easily be identified and the two types of diagram observed are presented. For the long distance anti-phase-order transformation, we propose a model in which a domain grows laterally at the expense of the other. Calculation shows that in this case certain order reflections re-appear accompanied by extra satellites whose amplitude is not proportional to that of the pure anti-phase satellites, the opposite of the case of a double diffraction. The irreversible evolution of Au{sub 3}Mn alloys is then described; in this case interactions between domains of different type occur. Finally a diagram for the alloy Au{sub 3}Mn is given; the anti-phase boundaries are made up of 130 planes. (authors) [French] Les antiphases periodiques sont des structures ordonnees dans lesquelles l'element ordonnable alterne regulierement entre deux
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Hauptman, A;
Kleinberger, R;
Okuzumi, H;
Perio, P;
Tournarie, M
[1]
- Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Citation Formats
Hauptman, A, Kleinberger, R, Okuzumi, H, Perio, P, and Tournarie, M.
Periodic anti-phases. Long distance antiphase-order transformations (1961); Antiphases periodiques. Transformation antiphase-ordre a grande distance (1961).
France: N. p.,
1961.
Web.
Hauptman, A, Kleinberger, R, Okuzumi, H, Perio, P, & Tournarie, M.
Periodic anti-phases. Long distance antiphase-order transformations (1961); Antiphases periodiques. Transformation antiphase-ordre a grande distance (1961).
France.
Hauptman, A, Kleinberger, R, Okuzumi, H, Perio, P, and Tournarie, M.
1961.
"Periodic anti-phases. Long distance antiphase-order transformations (1961); Antiphases periodiques. Transformation antiphase-ordre a grande distance (1961)."
France.
@misc{etde_20822443,
title = {Periodic anti-phases. Long distance antiphase-order transformations (1961); Antiphases periodiques. Transformation antiphase-ordre a grande distance (1961)}
author = {Hauptman, A, Kleinberger, R, Okuzumi, H, Perio, P, and Tournarie, M}
abstractNote = {Periodic anti-phases are ordered structures in which the movable elements alternates regularly between two available sites, in one or two directions. We study in the present work two particular properties of periodic anti-phases : 1- The irrationality or the continuous variation of the periodic anti-phase. 2- The reversible transition between the anti-phase state and that of long distance order. We have calculated the distribution of the diffracted amplitudes for the 'rational statistic' model. They can easily be identified and the two types of diagram observed are presented. For the long distance anti-phase-order transformation, we propose a model in which a domain grows laterally at the expense of the other. Calculation shows that in this case certain order reflections re-appear accompanied by extra satellites whose amplitude is not proportional to that of the pure anti-phase satellites, the opposite of the case of a double diffraction. The irreversible evolution of Au{sub 3}Mn alloys is then described; in this case interactions between domains of different type occur. Finally a diagram for the alloy Au{sub 3}Mn is given; the anti-phase boundaries are made up of 130 planes. (authors) [French] Les antiphases periodiques sont des structures ordonnees dans lesquelles l'element ordonnable alterne regulierement entre deux sites disponibles, suivant une ou deux directions. Nous etudions, dans le travail presente, deux proprietes particulieres des antiphases periodiques: 1- L'irrationalite ou la variation continue de la periode d'antiphase. 2- La transition reversible entre l'etat antiphase et l'etat d'ordre a grande distance. Nous avons calcule la distribution des amplitudes diffractees pour le modele 'rationnel statistique'. Elles sont facilement identifiables et les deux types de diagrammes observes sont presentes. Pour la transformation antiphase-ordre a longue distance, nous proposons un modele de croissance laterale d'un domaine au detriment de l'autre. Le calcul montre que, dans ce cas, certaines reflexions d'ordre reapparaissent, accompagnees de satellites supplementaires, dont l'amplitude n'est pas proportionnelle a celle des satellites de l'antiphase pure, contrairement au cas d'une double diffraction. On decrira ensuite l'evolution non reservibie d'alliages Au{sub 3}Mn, faisant apparaitre des interactions entre domaines de type different. On montrera enfin un diagramme d'alliage Au{sub 3}Mn, ou les frontieres d'antiphase sont constituees de plans 130. (auteurs)}
place = {France}
year = {1961}
month = {Jul}
}
title = {Periodic anti-phases. Long distance antiphase-order transformations (1961); Antiphases periodiques. Transformation antiphase-ordre a grande distance (1961)}
author = {Hauptman, A, Kleinberger, R, Okuzumi, H, Perio, P, and Tournarie, M}
abstractNote = {Periodic anti-phases are ordered structures in which the movable elements alternates regularly between two available sites, in one or two directions. We study in the present work two particular properties of periodic anti-phases : 1- The irrationality or the continuous variation of the periodic anti-phase. 2- The reversible transition between the anti-phase state and that of long distance order. We have calculated the distribution of the diffracted amplitudes for the 'rational statistic' model. They can easily be identified and the two types of diagram observed are presented. For the long distance anti-phase-order transformation, we propose a model in which a domain grows laterally at the expense of the other. Calculation shows that in this case certain order reflections re-appear accompanied by extra satellites whose amplitude is not proportional to that of the pure anti-phase satellites, the opposite of the case of a double diffraction. The irreversible evolution of Au{sub 3}Mn alloys is then described; in this case interactions between domains of different type occur. Finally a diagram for the alloy Au{sub 3}Mn is given; the anti-phase boundaries are made up of 130 planes. (authors) [French] Les antiphases periodiques sont des structures ordonnees dans lesquelles l'element ordonnable alterne regulierement entre deux sites disponibles, suivant une ou deux directions. Nous etudions, dans le travail presente, deux proprietes particulieres des antiphases periodiques: 1- L'irrationalite ou la variation continue de la periode d'antiphase. 2- La transition reversible entre l'etat antiphase et l'etat d'ordre a grande distance. Nous avons calcule la distribution des amplitudes diffractees pour le modele 'rationnel statistique'. Elles sont facilement identifiables et les deux types de diagrammes observes sont presentes. Pour la transformation antiphase-ordre a longue distance, nous proposons un modele de croissance laterale d'un domaine au detriment de l'autre. Le calcul montre que, dans ce cas, certaines reflexions d'ordre reapparaissent, accompagnees de satellites supplementaires, dont l'amplitude n'est pas proportionnelle a celle des satellites de l'antiphase pure, contrairement au cas d'une double diffraction. On decrira ensuite l'evolution non reservibie d'alliages Au{sub 3}Mn, faisant apparaitre des interactions entre domaines de type different. On montrera enfin un diagramme d'alliage Au{sub 3}Mn, ou les frontieres d'antiphase sont constituees de plans 130. (auteurs)}
place = {France}
year = {1961}
month = {Jul}
}