Abstract
Carriers were successfully doped into RbCa2NaNb4O13 by the substitution of Sr2+ for Na+, yielding electroconducting niobates with a layered structure consisting of four perovskite-like layers. Single-phase products of polycrystalline RbCa2Na1-xSrxNb4O13 (x = 0.2 and 0.4) were synthesized by the solid-state reaction of RbCa2Nb3O10, Sr5Nb4O15, Nb2O5, and Nb metal. The solid solutions were indexed based on a tetragonal structure, corresponding to the end-member RbCa2NaNb4O13. With the increase in the amount of strontium substitution, an expansion of the c-axis was observed while the a-axis was essentially constant. The products showed semiconducting properties.
| Original language | English |
|---|---|
| Pages (from-to) | 508-512 |
| Number of pages | 5 |
| Journal | Journal of Solid State Chemistry |
| Volume | 148 |
| Issue number | 2 |
| Publication status | Published - 1999 Dec |
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Keywords
- Electrical conduction
- Layered perovskite
- Niobate
- Reduced oxidation state
- Rietveld analysis
- Solid-state reaction
ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
Synthesis and Structures of Reduced Niobates with Four Perovskite-like Layers and Their Semiconducting Properties. / Sugimoto, W.; Ohkawa, H.; Naito, M.; Sugahara, Yoshiyuki; Kuroda, Kazuyuki.
In: Journal of Solid State Chemistry, Vol. 148, No. 2, 12.1999, p. 508-512.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and Structures of Reduced Niobates with Four Perovskite-like Layers and Their Semiconducting Properties
AU - Sugimoto, W.
AU - Ohkawa, H.
AU - Naito, M.
AU - Sugahara, Yoshiyuki
AU - Kuroda, Kazuyuki
PY - 1999/12
Y1 - 1999/12
N2 - Carriers were successfully doped into RbCa2NaNb4O13 by the substitution of Sr2+ for Na+, yielding electroconducting niobates with a layered structure consisting of four perovskite-like layers. Single-phase products of polycrystalline RbCa2Na1-xSrxNb4O13 (x = 0.2 and 0.4) were synthesized by the solid-state reaction of RbCa2Nb3O10, Sr5Nb4O15, Nb2O5, and Nb metal. The solid solutions were indexed based on a tetragonal structure, corresponding to the end-member RbCa2NaNb4O13. With the increase in the amount of strontium substitution, an expansion of the c-axis was observed while the a-axis was essentially constant. The products showed semiconducting properties.
AB - Carriers were successfully doped into RbCa2NaNb4O13 by the substitution of Sr2+ for Na+, yielding electroconducting niobates with a layered structure consisting of four perovskite-like layers. Single-phase products of polycrystalline RbCa2Na1-xSrxNb4O13 (x = 0.2 and 0.4) were synthesized by the solid-state reaction of RbCa2Nb3O10, Sr5Nb4O15, Nb2O5, and Nb metal. The solid solutions were indexed based on a tetragonal structure, corresponding to the end-member RbCa2NaNb4O13. With the increase in the amount of strontium substitution, an expansion of the c-axis was observed while the a-axis was essentially constant. The products showed semiconducting properties.
KW - Electrical conduction
KW - Layered perovskite
KW - Niobate
KW - Reduced oxidation state
KW - Rietveld analysis
KW - Solid-state reaction
UR - http://www.scopus.com/inward/record.url?scp=0346873010&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0346873010&partnerID=8YFLogxK
M3 - Article
VL - 148
SP - 508
EP - 512
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 2
ER -