STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE
We report the results of both Bragg and diffuse neutron scattering studies of the superionic solid solution, (Bi2O3)1-x(Y2O3)x. The Bragg data for polycrystalline samples show that the strutural features observed previously in (Bi2O3)0.73(Y2O3)0.27 are present across the entire range of the solid so...
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| Format: | Journal article |
| Language: | English |
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1986
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| _version_ | 1826286181973753856 |
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| author | Battle, P Catlow, C Heap, J Moroney, L |
| author_facet | Battle, P Catlow, C Heap, J Moroney, L |
| author_sort | Battle, P |
| collection | OXFORD |
| description | We report the results of both Bragg and diffuse neutron scattering studies of the superionic solid solution, (Bi2O3)1-x(Y2O3)x. The Bragg data for polycrystalline samples show that the strutural features observed previously in (Bi2O3)0.73(Y2O3)0.27 are present across the entire range of the solid solution, 0.25 < x < 0.42. The number of 〈111〉-displaced anions in the defect fluorite structure decreases with increasing Y3+ content whereas the extent of short-range ordering on the anion sublattice increases. Both of these observations are consistent with the decrease in oxide ion conductivity which occurs as x increases. The basic crystal structure does not change between room temperature and 1023 K, although the unit cell volume increases by 3.78% for x = 0.27, and the number of 〈111〉-displaced anions increases, again consistent with the enhanced conductivity observed at high temperatures. It is suggested that Y3+ stabilizes the fluorite structure by ordering the vacancies on the oxygen sublattice in chains along the 〈111〉 and 〈110〉 directions. © 1986. |
| first_indexed | 2024-03-07T01:39:58Z |
| format | Journal article |
| id | oxford-uuid:9685c4d3-2d4b-43a5-b597-b5ae731043b7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:39:58Z |
| publishDate | 1986 |
| record_format | dspace |
| spelling | oxford-uuid:9685c4d3-2d4b-43a5-b597-b5ae731043b72022-03-26T23:53:26ZSTRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATUREJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9685c4d3-2d4b-43a5-b597-b5ae731043b7EnglishSymplectic Elements at Oxford1986Battle, PCatlow, CHeap, JMoroney, LWe report the results of both Bragg and diffuse neutron scattering studies of the superionic solid solution, (Bi2O3)1-x(Y2O3)x. The Bragg data for polycrystalline samples show that the strutural features observed previously in (Bi2O3)0.73(Y2O3)0.27 are present across the entire range of the solid solution, 0.25 < x < 0.42. The number of 〈111〉-displaced anions in the defect fluorite structure decreases with increasing Y3+ content whereas the extent of short-range ordering on the anion sublattice increases. Both of these observations are consistent with the decrease in oxide ion conductivity which occurs as x increases. The basic crystal structure does not change between room temperature and 1023 K, although the unit cell volume increases by 3.78% for x = 0.27, and the number of 〈111〉-displaced anions increases, again consistent with the enhanced conductivity observed at high temperatures. It is suggested that Y3+ stabilizes the fluorite structure by ordering the vacancies on the oxygen sublattice in chains along the 〈111〉 and 〈110〉 directions. © 1986. |
| spellingShingle | Battle, P Catlow, C Heap, J Moroney, L STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE |
| title | STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE |
| title_full | STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE |
| title_fullStr | STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE |
| title_full_unstemmed | STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE |
| title_short | STRUCTURAL AND DYNAMIC STUDIES OF DELTA-BI2O3 OXIDE ION CONDUCTORS .1. THE STRUCTURE OF (BI2O3)1-X(Y2O3)X AS A FUNCTION OF X AND TEMPERATURE |
| title_sort | structural and dynamic studies of delta bi2o3 oxide ion conductors 1 the structure of bi2o3 1 x y2o3 x as a function of x and temperature |
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