Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions
Compositions with substitution both at A and B site of the host LaGaO3 system were synthesized via conventional solid-state reaction route. The substitution at A (La3+) site was fixed at 10 mole % Sr2+, while that at B (Ga3+) site was varied between 20 mole % and 50 mole % Mg2+. Cylindrical compacts...
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| Format: | Article |
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Elsevier Sequoia SALausanne
2000
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| _version_ | 1825940447140249600 |
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| author | Azad, Abdul-Majeed Er, Liew Foo |
| author_facet | Azad, Abdul-Majeed Er, Liew Foo |
| author_sort | Azad, Abdul-Majeed |
| collection | UPM |
| description | Compositions with substitution both at A and B site of the host LaGaO3 system were synthesized via conventional solid-state reaction route. The substitution at A (La3+) site was fixed at 10 mole % Sr2+, while that at B (Ga3+) site was varied between 20 mole % and 50 mole % Mg2+. Cylindrical compacts were sintered using various temperature (T)-soak-time (t) profiles in the range 1200-1400°C and 2-72 h. X-ray analyses showed that up to 40 mole % MgO can go into the host lattice without resulting in new phases. Sintered bodies with higher amount of the dopant showed microstructures with mixed morphology, indicating that solid-solubility limit could have been exceeded. Microstructural examination also revealed that a soak-time of about 6 h at 1400°C was adequate to achieve benign microstructure in 20 mole % MgO-doped LaGaO3. |
| first_indexed | 2024-12-09T02:27:48Z |
| format | Article |
| id | upm.eprints-114155 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-12-09T02:27:48Z |
| publishDate | 2000 |
| publisher | Elsevier Sequoia SALausanne |
| record_format | dspace |
| spelling | upm.eprints-1141552024-12-03T09:06:08Z http://psasir.upm.edu.my/id/eprint/114155/ Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions Azad, Abdul-Majeed Er, Liew Foo Compositions with substitution both at A and B site of the host LaGaO3 system were synthesized via conventional solid-state reaction route. The substitution at A (La3+) site was fixed at 10 mole % Sr2+, while that at B (Ga3+) site was varied between 20 mole % and 50 mole % Mg2+. Cylindrical compacts were sintered using various temperature (T)-soak-time (t) profiles in the range 1200-1400°C and 2-72 h. X-ray analyses showed that up to 40 mole % MgO can go into the host lattice without resulting in new phases. Sintered bodies with higher amount of the dopant showed microstructures with mixed morphology, indicating that solid-solubility limit could have been exceeded. Microstructural examination also revealed that a soak-time of about 6 h at 1400°C was adequate to achieve benign microstructure in 20 mole % MgO-doped LaGaO3. Elsevier Sequoia SALausanne 2000-06 Article PeerReviewed Azad, Abdul-Majeed and Er, Liew Foo (2000) Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions. Journal of Alloys and Compounds, 306 (1-2). pp. 103-112. ISSN 0925-8388; eISSN: 0925-8388 https://linkinghub.elsevier.com/retrieve/pii/S0925838800007283 10.1016/s0925-8388(00)00728-3 |
| spellingShingle | Azad, Abdul-Majeed Er, Liew Foo Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions |
| title | Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions |
| title_full | Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions |
| title_fullStr | Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions |
| title_full_unstemmed | Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions |
| title_short | Microstructural evolution in B-site Mg-substituted La0.9Sr0.1GaO3−δ oxide solid solutions |
| title_sort | microstructural evolution in b site mg substituted la0 9sr0 1gao3 δ oxide solid solutions |
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