Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions
Using solid-state reactions method, the solid solutions of layered oxygen-deficient perovskites NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) were prepared; their crystal structure, thermal stability, thermal expansion, electrical conductivity and thermopower were studied. It was found that NdBa1–xSr...
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| Language: | English |
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Ural Federal University
2021-07-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/5133 |
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| author | A. I. Klyndyuk Ya. Yu. Zhuravleva N. N. Gundilovich |
| author_facet | A. I. Klyndyuk Ya. Yu. Zhuravleva N. N. Gundilovich |
| author_sort | A. I. Klyndyuk |
| collection | DOAJ |
| description | Using solid-state reactions method, the solid solutions of layered oxygen-deficient perovskites NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) were prepared; their crystal structure, thermal stability, thermal expansion, electrical conductivity and thermopower were studied. It was found that NdBa1–xSrxFeCo0.5Cu0.5O5+δ phases crystallize in tetragonal syngony (space group P4/mmm) and are p-type semiconductors, whose conductivity character at high temperatures changed to the metallic one due to evolution from the samples of so-called weakly-bonded oxygen. Partial substitution of barium by strontium in NdBaFeCo0.5Cu0.5O5+δ leads to the small decreasing of unit cell parameters, thermal stability and thermopower of NdBa1–xSrxFeCo0.5Cu0.5O5+δ solid solutions, increasing of their electrical conductivity values and slightly affects their linear thermal expansion coefficient and activation energy of electrical transport values. |
| format | Article |
| id | doaj-art-5d67ca403f684c66a7a289a31c5343d3 |
| institution | OA Journals |
| issn | 2411-1414 |
| language | English |
| publishDate | 2021-07-01 |
| publisher | Ural Federal University |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-5d67ca403f684c66a7a289a31c5343d32025-08-20T02:06:00ZengUral Federal UniversityChimica Techno Acta2411-14142021-07-018310.15826/chimtech.2021.8.3.013998Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutionsA. I. Klyndyuk0Ya. Yu. Zhuravleva1N. N. Gundilovich2Belarus State Technological University, MinskBelarus State Technological University, MinskBelarus State Technological University, MinskUsing solid-state reactions method, the solid solutions of layered oxygen-deficient perovskites NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) were prepared; their crystal structure, thermal stability, thermal expansion, electrical conductivity and thermopower were studied. It was found that NdBa1–xSrxFeCo0.5Cu0.5O5+δ phases crystallize in tetragonal syngony (space group P4/mmm) and are p-type semiconductors, whose conductivity character at high temperatures changed to the metallic one due to evolution from the samples of so-called weakly-bonded oxygen. Partial substitution of barium by strontium in NdBaFeCo0.5Cu0.5O5+δ leads to the small decreasing of unit cell parameters, thermal stability and thermopower of NdBa1–xSrxFeCo0.5Cu0.5O5+δ solid solutions, increasing of their electrical conductivity values and slightly affects their linear thermal expansion coefficient and activation energy of electrical transport values.https://chimicatechnoacta.ru/article/view/5133layered perovskitesthermal stabilitythermal expansionelectrical conductivitythermo-emf |
| spellingShingle | A. I. Klyndyuk Ya. Yu. Zhuravleva N. N. Gundilovich Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions Chimica Techno Acta layered perovskites thermal stability thermal expansion electrical conductivity thermo-emf |
| title | Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions |
| title_full | Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions |
| title_fullStr | Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions |
| title_full_unstemmed | Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions |
| title_short | Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions |
| title_sort | crystal structure thermal and electrotransport properties of ndba1 xsrxfeco0 5cu0 5o5 δ 0 02 ≤ x ≤ 0 20 solid solutions |
| topic | layered perovskites thermal stability thermal expansion electrical conductivity thermo-emf |
| url | https://chimicatechnoacta.ru/article/view/5133 |
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