Academic Journal
Short-range order in ion irradiated fluorite structural derivatives in Sc2O3-HfO2
| العنوان: | Short-range order in ion irradiated fluorite structural derivatives in Sc2O3-HfO2 |
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| المؤلفون: | Izumi, Takahiro, Iwasaki, Masanari, Patel, Maulik, K., Baldinozzi, Gianguido, Grygiel, C., Ishimaru, Manabu |
| المساهمون: | Kyushu Institute of Technology (Kyutech), Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Fukuoka (DMS), Kyushu University, University of Liverpool, Laboratoire Structures, Propriétés et Modélisation des solides (SPMS), Institut de Chimie - CNRS Chimie (INC-CNRS)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut Rayonnement Matière de Saclay (DRF) (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 1359-6454 ; Acta Materialia ; https://hal.science/hal-04790455 ; Acta Materialia, 2025, 284, pp.120581. ⟨10.1016/j.actamat.2024.120581⟩ ; https://www.sciencedirect.com/science/article/pii/S1359645424009297?via%3Dihub. |
| بيانات النشر: | CCSD Elsevier |
| سنة النشر: | 2025 |
| المجموعة: | HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
| مصطلحات موضوعية: | radiation effects, phase transformation, fluorite-related structure, rare earth oxides, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [CHIM.CRIS]Chemical Sciences/Cristallography, [CHIM.MATE]Chemical Sciences/Material chemistry, [PHYS.COND.CM-DS-NN]Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn] |
| الوصف: | International audience ; Knowledge of radiation-induced structural changes in complex oxides is of technological importance for the development of container materials for the immobilization of nuclear waste. Fluorite structural derivatives are candidates for container materials, but their disordering processes under radiation environments are still unclear. In the present study, ion irradiation was performed on the Sc2O3-HfO2 pseudo-binary system in which fluorite-related structural compounds such as β-Sc2Hf7O17, γ-Sc2Hf5O13, and δ-Sc4Zr3O12 exist, and the short-range ordered structures were investigated by transmission electron microscopy (TEM). The pristine long-range ordered rhombohedral phase was found to transform into a long-range disordered cubic oxygen-deficient fluorite phase upon ion irradiation. The atomic arrangements are not completely disordered, but a more ordered structure was present in the disordered fluorite matrix. A characteristic diffuse scattering was observed in the electron diffraction patterns, and dark-field TEM observations revealed that it is due to microdomains, defined as small regions where the degree of order is higher than that of the disordered matrix.Although the parent phase was different before irradiation, the short-range organization is the same. A comparison of diffuse scattering with the location of superlattice reflections suggested that the microdomains have a structure similar to the δ-phase. With increasing Sc2O3 concentration, the microdomains of δ-type structures were suggested to change to short-range ordered bixbyite structures, which are not present in the 2 equilibrium phase diagram. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1016/j.actamat.2024.120581 |
| الاتاحة: | https://hal.science/hal-04790455 https://hal.science/hal-04790455v1/document https://hal.science/hal-04790455v1/file/Short-range%20order%20in%20ion%20irradiated%20fluorite%20structural%20derivatives%20in%20Sc2O3-HfO2.pdf https://doi.org/10.1016/j.actamat.2024.120581 |
| Rights: | http://creativecommons.org/licenses/by-nc/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.855B8C15 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.actamat.2024.120581 |
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