Elasticity and lattice vibrational properties of transparent polycrystalline yttrium–aluminium garnet: Experiments and pair potential calculations
In: ISSN: 0955-2219 ; Journal of the European Ceramic Society ; https://hal.archives-ouvertes.fr/hal-00297613 ; Journal of the European Ceramic Society, Elsevier, 2007, 27, pp.4719-4725. ⟨10.1016/j.jeurceramsoc.2007.02.216⟩, 2007
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Zugriff:
Brillouin light scattering, Raman light scattering and visible–infrared reflectometry techniques have been used to investigate, respectively, the elastic properties, the phonons and the optical properties of bulk textured polycrystalline yttrium–aluminum garnet doped with 2 at% neodymium obtained by the sintering of commercial oxides. From the analysis of the observed bulk longitudinal and transverse acoustic modes with the knowledge of the refractive index 1.81 inferred from the visible reflectometry, the two independent effective elastic constants of the isotropic polycrystal C11 = 362 GPa and (C11 −C12)/2 = 121 GPa are determined leading to the value of the bulk modulus B = (C11 +2C12)/3 = 200 GPa. The ratio ε0/ε∞ = 3.1 and the optic permittivity ε∞ = 3.46 are derived from the infrared reflectivity data. Pair potential calculations of the three single crystal elastic constants c11 = 340, c12 = 127 and c44 = 112 GPa, of the bulk modulus B = (c11 +2c12)/3 = 198 GPa, of the zone-center () phonons and of the permittivity function provide good comparison with our experimental results.
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Elasticity and lattice vibrational properties of transparent polycrystalline yttrium–aluminium garnet: Experiments and pair potential calculations
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Autor/in / Beteiligte Person: | Djemia, P. ; Tetard, Florent ; Bouamama, K. ; Charron, Eric ; Tetard, D. ; Rabinovitch, Y. ; Propriétés mécaniques et thermodynamiques des matériaux (PMTM) ; Centre National de la Recherche Scientifique (CNRS) ; Département de Physique ; Université Ferhat-Abbas Sétif 1 Sétif (UFAS1) ; Institut des Nanosciences de Paris (INSP) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) ; Science des Procédés Céramiques et de Traitements de Surface (SPCTS) ; Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM) ; Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) ; Compagnie Industrielle des Lasers Limoges (CILAS) ; Airbus Defence and Space Deutschland |
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Zeitschrift: | ISSN: 0955-2219 ; Journal of the European Ceramic Society ; https://hal.archives-ouvertes.fr/hal-00297613 ; Journal of the European Ceramic Society, Elsevier, 2007, 27, pp.4719-4725. ⟨10.1016/j.jeurceramsoc.2007.02.216⟩, 2007 |
Veröffentlichung: | HAL CCSD ; Elsevier, 2007 |
Medientyp: | academicJournal |
DOI: | 10.1016/j.jeurceramsoc.2007.02.216 |
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