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Cited by 159

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On the homogeneity of high entropy oxides: An investigation at the atomic scale

Chellali, Mohammed Reda, Sarkar, Abhishek, Nandam, Sree Harsha, Bhattacharya, Subramshu S., Breitung, Ben, Hahn, Horst, Velasco, Leonardo·2019·Scripta Materialia

Abstract

Abstract Homogeneous distribution of the constituent elements at the atomic scale in high entropy oxides (HEOs) was demonstrated for the first time by atom probe tomography (APT). Three different single-phase HEOs having rocksalt, fluorite, and perovskite type crystal structures were synthesized using nebulized spray pyrolysis process. The as-synthesized powders were compacted into pellets under high pressure of 6 GPa. Both as-synthesized and compacted powders were investigated by X-ray diffraction and transmission electron microscopy. APT results showed that the constituent cations in all three HEO systems were homogenously distributed with no significant segregation or concentration fluctuation even at the atomic scale.

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Metadata

Authors
Chellali, M. R., Sarkar, A., Nandam, S. H., Bhattacharya, S. S., Breitung, B., Hahn, H., & Velasco, L.
Venue
Scripta Materialia
Publisher
Elsevier BV
Published
2019-06
Volume
166
Pages
58-63
ISSN
1359-6462 (ISSN-L)
OpenAlex
W2920834558
Cited by
159
References
1
FWCI
8.79
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: On the homogeneity of high entropy oxides: An investigation at the atomic scale. https://app.cochat.ai/papers/10.1016/j.scriptamat.2019.02.039
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Chellali, M. R., Sarkar, A., Nandam, S. H., Bhattacharya, S. S., Breitung, B., Hahn, H., & Velasco, L. (2019). On the homogeneity of high entropy oxides: An investigation at the atomic scale. Scripta Materialia. https://doi.org/10.1016/j.scriptamat.2019.02.039

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