Partially disordered pyrochlore: time-temperature dependence of recrystallization and dehydration
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Tobias Beirau
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Claudia E. Reissner
Abstract
The comparison of the evolution of the mechanical properties (elastic modulus and hardness) after step-wise thermal annealing for 1 and 16 h up to 900 K of a radiation-damaged pyrochlore (∼35% amorphous fraction; 1.8 wt% ThO2) provides insights to the time-temperature dependence of the recrystallization behavior. Especially the elastic modulus, directly related to interatomic bonding, enables the correlation with the amount of amorphous fraction. From this a pronounced effect of the annealing time on percolation behavior could be deduced. Evolved gas analysis indicate dehydration in the course of the structural reorganization process.
Funding source: Deutsche Forschungsgemeinschaft
Award Identifier / Grant number: BE 5456/2-1
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – No. BE 5456/2-1 (T.B.).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- In this issue
- Inorganic Crystal Structures (Original Paper)
- Crystal structure and magnetic properties of some compounds with GdNi2Ga3In type structure
- Partially disordered pyrochlore: time-temperature dependence of recrystallization and dehydration
- Lu37Ru16.4In4 – coloring and vacancy formation in a new structure type closely related to a 8 × 8 × 8 bcc superstructure
- BaFe0.875Re0.125O3−δ and BaFe0.75Ta0.25O3−δ as potential cathodes for solid-oxide fuel-cells: a structural study from neutron diffraction data
- Unbalanced racemates: solid state solutions containing enantiomeric pairs crystallizing in Sohncke space groups with (L:D) ratios other than (1:1) – illustrated with crystals of a Co(III) coordination compound
- Crystal structure and specific heat of calcium lanthanide oxyborates Ca4LnO(BO3)3
- Order-disorder (OD) structures of Rb2Zn(TeO3)(CO3)·H2O and Na2Zn2Te4O11
- Na2Cu+[Cu2+3O](AsO4)2Cl and Cu3[Cu3O]2(PO4)4Cl2: two new structure types based upon chains of oxocentered tetrahedra
- Organic and Metalorganic Crystal Structures (Original Paper)
- Two isomers Ba5Mg4C54O48H114 and Pb5Mg4C54O48H114
- Layered structures based on antimony tartrate dimers
