Disordered Gd6UO12-δ with the cation antisite defects prepared
by a combined mechanochemical−thermal method

J 2021

Disordered Gd6UO12-δ with the cation antisite defects prepared by a combined mechanochemical−thermal method

DARIN, G.; K. IMAKUMA; R.T. SANTIAGO; K.L. DA SILVA; L.F. CÓTICA et. al.

Basic information

Original name

Disordered Gd6UO12-δ with the cation antisite defects prepared by a combined mechanochemical−thermal method

Authors

DARIN, G. (guarantor); K. IMAKUMA; R.T. SANTIAGO; K.L. DA SILVA; L.F. CÓTICA; M. FABIÁN; Jan VALÍČEK (203 Czech Republic, belonging to the institution); H. HAHND and Vladimír ŠEPEĽÁK (703 Slovakia, belonging to the institution)

Edition

Journal of Nuclear Materials, AMSTERDAM, NETHERLANDS, ELSEVIER, 2021, 0022-3115

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

20501 Materials engineering

Country of publisher

Netherlands

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 3.555

RIV identification code

RIV/75081431:_____/21:00002108

Organization unit

Institute of Technology and Business in České Budějovice

EID Scopus

2-s2.0-85101532359

Keywords in English

Gd6UO12; Cation antisite disorder; Oxygen deficiency; Mechanochemistry; Rietveld refinement

Abstract

V originále

The synthesis of the rhombohedral Gd6UO12-δ is reported via mechanochemical processing of stoichiomet ric Gd2O3/UO2 mixtures and their subsequent annealing. Rietveld refinement of XRD data reveals that the as-prepared material exhibits a remarkable degree of cation antisite disorder and oxygen deficiency. The simulations of intensities of the selected XRD superlattice reflections are performed for limiting states of Gd6UO12-δ with its most extreme degrees of the cation antisite disorder. On the basis of the estimated bond lengths it can be stated that distorted geometry of structural units in the material is a consequence of its relatively large oxygen deficiency.

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Cite

DARIN, G.; K. IMAKUMA; R.T. SANTIAGO; K.L. DA SILVA; L.F. CÓTICA; M. FABIÁN; Jan VALÍČEK; H. HAHND and Vladimír ŠEPEĽÁK. Disordered Gd6UO12-δ with the cation antisite defects prepared by a combined mechanochemical−thermal method. Journal of Nuclear Materials. AMSTERDAM, NETHERLANDS: ELSEVIER, 2021, 549/2021, June 2021, p. 152895-152900. ISSN 0022-3115.

@article{59001,
   author = {Darin, G. and Imakuma, K. and Santiago, R.T. and Da Silva, K.L. and Cótica, L.F. and Fabián, M. and Valíček, Jan and Hahnd, H. and Šepeľák, Vladimír},
   article_location = {AMSTERDAM, NETHERLANDS},
   article_number = {June 2021},
   keywords = {Gd6UO12; Cation antisite disorder; Oxygen deficiency; Mechanochemistry; Rietveld refinement},
   language = {eng},
   issn = {0022-3115},
   journal = {Journal of Nuclear Materials},
   title = {Disordered Gd6UO12-δ with the cation antisite defects prepared by a combined mechanochemical−thermal method},
   url = {https://www.sciencedirect.com/science/article/abs/pii/S0022311521001185?via%3Dihub},
   volume = {549/2021},
   year = {2021}
}

TY  - JOUR
ID  - 59001
AU  - Darin, G. - Imakuma, K. - Santiago, R.T. - Da Silva, K.L. - Cótica, L.F. - Fabián, M. - Valíček, Jan - Hahnd, H. - Šepeľák, Vladimír
PY  - 2021
TI  - Disordered Gd6UO12-δ with the cation antisite defects prepared by a combined mechanochemical−thermal method
JF  - Journal of Nuclear Materials
VL  - 549/2021
IS  - June 2021
SP  - 152895-152900
EP  - 152895-152900
PB  - ELSEVIER
SN  - 00223115
KW  - Gd6UO12
KW  - Cation antisite disorder
KW  - Oxygen deficiency
KW  - Mechanochemistry
KW  - Rietveld refinement
UR  - https://www.sciencedirect.com/science/article/abs/pii/S0022311521001185?via%3Dihub
N2  - The synthesis of the rhombohedral Gd6UO12-δ is reported via mechanochemical processing of stoichiomet ric Gd2O3/UO2 mixtures and their subsequent annealing. Rietveld refinement of XRD data reveals that the as-prepared material exhibits a remarkable degree of cation antisite disorder and oxygen deficiency. The simulations of intensities of the selected XRD superlattice reflections are performed for limiting states of Gd6UO12-δ with its most extreme degrees of the cation antisite disorder. On the basis of the estimated bond lengths it can be stated that distorted geometry of structural units in the material is a consequence of its relatively large oxygen deficiency.
ER  -

DARIN, G.; K. IMAKUMA; R.T. SANTIAGO; K.L. DA SILVA; L.F. CÓTICA; M. FABIÁN; Jan VALÍČEK; H. HAHND and Vladimír ŠEPEĽÁK. Disordered Gd6UO12-δ with the cation antisite defects prepared by a combined mechanochemical−thermal method. \textit{Journal of Nuclear Materials}. AMSTERDAM, NETHERLANDS: ELSEVIER, 2021, 549/2021, June 2021, p.~152895-152900. ISSN~0022-3115.

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