The spin states of cobalt ions and thermo-e.m.f. in erbium and holmium cobaltites
The temperature dependences of thermo-e.m.f. for Er₁₋ₓSrₓCoO₃₋δ, Ho₁₋ₓSrxCoO₃₋δ, Er₁₋ₓCaxCoO₃₋δ, Ho₁₋ₓCaxCoO₃₋δ ceramics have been studied in the temperature range of 300 K (of 100 K for some materials) to 600 K. The Zeebeck coefficient for Sr doped samples is lowered as the strontium content increa...
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| Date: | 2009 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
НТК «Інститут монокристалів» НАН України
2009
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| Series: | Functional Materials |
| Subjects: | |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | The spin states of cobalt ions and thermo-e.m.f. in erbium and holmium cobaltites // V.F. Khirnyi, A.A. Kozlovskii, A.V. Semenov, V.M. Puzikov // Functional Materials. — 2009. — Т. 16, № 2. — С. 150-154. — Бібліогр.: 20 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The temperature dependences of thermo-e.m.f. for Er₁₋ₓSrₓCoO₃₋δ, Ho₁₋ₓSrxCoO₃₋δ, Er₁₋ₓCaxCoO₃₋δ, Ho₁₋ₓCaxCoO₃₋δ ceramics have been studied in the temperature range of 300 K (of 100 K for some materials) to 600 K. The Zeebeck coefficient for Sr doped samples is lowered as the strontium content increases and the temperature rises. It has been shown that the 3d level splitting and the charge disproportionation of cobalt ions is to be taken into account to explain the above-mentioned behavior. |
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