Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes
The compositional ranges of Bi4V2O11 solid solutions containing rare earth elements: Nd, Gd, Er and Yb have been determined by means of a phase diagram study at solidus temperatures, ≈900°C. The locus of the solid solutions indicates that rare earth elements replace V in the crystal structure and th...
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| Format: | Article |
| Language: | English |
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Elsevier
1999
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112441/ http://psasir.upm.edu.my/id/eprint/112441/3/112441.pdf |
| _version_ | 1848865943915069440 |
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| author | Lee, C.K Ong, C.S. |
| author_facet | Lee, C.K Ong, C.S. |
| author_sort | Lee, C.K |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The compositional ranges of Bi4V2O11 solid solutions containing rare earth elements: Nd, Gd, Er and Yb have been determined by means of a phase diagram study at solidus temperatures, ≈900°C. The locus of the solid solutions indicates that rare earth elements replace V in the crystal structure and the new family of oxide ion conductors has the overall formula Bi4+yV2-x-yMxO11-y-x. DTA studies confirmed the identity of the various polymorphs formed. AC impedance studies show that Nd-, Gd-, Er- and Yb-doped materials are oxide ion conductors; however, they are electrically inhomogeneous. The best conductors, irrespective of the dopants, have compositions with y=0 and x=0.2 with conductivity values of up to 2×10-4 Ω-1 cm-1 at 300°C. |
| first_indexed | 2025-11-15T14:12:45Z |
| format | Article |
| id | upm-112441 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:12:45Z |
| publishDate | 1999 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1124412025-03-06T08:15:47Z http://psasir.upm.edu.my/id/eprint/112441/ Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes Lee, C.K Ong, C.S. The compositional ranges of Bi4V2O11 solid solutions containing rare earth elements: Nd, Gd, Er and Yb have been determined by means of a phase diagram study at solidus temperatures, ≈900°C. The locus of the solid solutions indicates that rare earth elements replace V in the crystal structure and the new family of oxide ion conductors has the overall formula Bi4+yV2-x-yMxO11-y-x. DTA studies confirmed the identity of the various polymorphs formed. AC impedance studies show that Nd-, Gd-, Er- and Yb-doped materials are oxide ion conductors; however, they are electrically inhomogeneous. The best conductors, irrespective of the dopants, have compositions with y=0 and x=0.2 with conductivity values of up to 2×10-4 Ω-1 cm-1 at 300°C. Elsevier 1999 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/112441/3/112441.pdf Lee, C.K and Ong, C.S. (1999) Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes. Solid State Ionics, 117 (3-4). pp. 301-310. ISSN 0167-2738; eISSN: 1872-7689 https://linkinghub.elsevier.com/retrieve/pii/S0167273898004160 10.1016/s0167-2738(98)00416-0 |
| spellingShingle | Lee, C.K Ong, C.S. Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| title | Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| title_full | Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| title_fullStr | Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| title_full_unstemmed | Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| title_short | Synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| title_sort | synthesis and characterisation of rare earth substituted bismuth vanadate solid electrolytes |
| url | http://psasir.upm.edu.my/id/eprint/112441/ http://psasir.upm.edu.my/id/eprint/112441/ http://psasir.upm.edu.my/id/eprint/112441/ http://psasir.upm.edu.my/id/eprint/112441/3/112441.pdf |