Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8‐δ
It is shown that an excess of Dy in A‐site (in amount of 0.2 in formula units) allows synthesizing a single‐phase perovskite‐related oxide with the 123‐type structure at 1100 °C in air. Cobalt ions completely fill the octahedrally coordinated positions in the structure of 123‐type Dy1.2Ba1.8Fe1.8Co1...
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| Veröffentlicht in: | Zeitschrift für anorganische und allgemeine Chemie (1950) 2023-08, Vol.649 (15), p.n/a |
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| container_title | Zeitschrift für anorganische und allgemeine Chemie (1950) |
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| creator | Bastron, I. A. Volkova, N. E. Suntsov, A. Yu Cherepanov, V. A. |
| description | It is shown that an excess of Dy in A‐site (in amount of 0.2 in formula units) allows synthesizing a single‐phase perovskite‐related oxide with the 123‐type structure at 1100 °C in air. Cobalt ions completely fill the octahedrally coordinated positions in the structure of 123‐type Dy1.2Ba1.8Fe1.8Co1.2O8‐δ, while iron together with excess Co is in the pyramidal oxygen coordination. The oxygen content at room temperature of 7.86 decreases with temperature. A slight increase in the slope of thermal expansion observed at T >200 °C. The electrical conductivity, carried out mainly by holes, increases non‐linearly with temperature, reaching a maximum value 14.8 S ⋅ cm−1 at 900 °C. Magnetic measurements allow assuming that Fe3+ are in low spin state, all Co2+ ions are in high spin, and Co3+ can be split into several states depending on coordination. |
| doi_str_mv | 10.1002/zaac.202300065 |
| format | Article |
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A. ; Volkova, N. E. ; Suntsov, A. Yu ; Cherepanov, V. A.</creator><creatorcontrib>Bastron, I. A. ; Volkova, N. E. ; Suntsov, A. Yu ; Cherepanov, V. A.</creatorcontrib><description>It is shown that an excess of Dy in A‐site (in amount of 0.2 in formula units) allows synthesizing a single‐phase perovskite‐related oxide with the 123‐type structure at 1100 °C in air. Cobalt ions completely fill the octahedrally coordinated positions in the structure of 123‐type Dy1.2Ba1.8Fe1.8Co1.2O8‐δ, while iron together with excess Co is in the pyramidal oxygen coordination. The oxygen content at room temperature of 7.86 decreases with temperature. A slight increase in the slope of thermal expansion observed at T >200 °C. The electrical conductivity, carried out mainly by holes, increases non‐linearly with temperature, reaching a maximum value 14.8 S ⋅ cm−1 at 900 °C. Magnetic measurements allow assuming that Fe3+ are in low spin state, all Co2+ ions are in high spin, and Co3+ can be split into several states depending on coordination.</description><identifier>ISSN: 0044-2313</identifier><identifier>EISSN: 1521-3749</identifier><identifier>DOI: 10.1002/zaac.202300065</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Cobalt ; Coordination ; electrical conductivity ; Electrical resistivity ; Magnetic measurement ; magnetic susceptibility ; Oxygen ; Oxygen content ; oxygen nonstoichiometry ; perovskite-type oxide ; Perovskites ; Room temperature ; Thermal expansion</subject><ispartof>Zeitschrift für anorganische und allgemeine Chemie (1950), 2023-08, Vol.649 (15), p.n/a</ispartof><rights>2023 Wiley‐VCH GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-3497-8272 ; 0000-0001-9447-0633 ; 0000-0002-3488-1454 ; 0000-0003-3653-6459</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fzaac.202300065$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fzaac.202300065$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Bastron, I. A.</creatorcontrib><creatorcontrib>Volkova, N. E.</creatorcontrib><creatorcontrib>Suntsov, A. Yu</creatorcontrib><creatorcontrib>Cherepanov, V. A.</creatorcontrib><title>Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8‐δ</title><title>Zeitschrift für anorganische und allgemeine Chemie (1950)</title><description>It is shown that an excess of Dy in A‐site (in amount of 0.2 in formula units) allows synthesizing a single‐phase perovskite‐related oxide with the 123‐type structure at 1100 °C in air. Cobalt ions completely fill the octahedrally coordinated positions in the structure of 123‐type Dy1.2Ba1.8Fe1.8Co1.2O8‐δ, while iron together with excess Co is in the pyramidal oxygen coordination. The oxygen content at room temperature of 7.86 decreases with temperature. A slight increase in the slope of thermal expansion observed at T >200 °C. The electrical conductivity, carried out mainly by holes, increases non‐linearly with temperature, reaching a maximum value 14.8 S ⋅ cm−1 at 900 °C. Magnetic measurements allow assuming that Fe3+ are in low spin state, all Co2+ ions are in high spin, and Co3+ can be split into several states depending on coordination.</description><subject>Cobalt</subject><subject>Coordination</subject><subject>electrical conductivity</subject><subject>Electrical resistivity</subject><subject>Magnetic measurement</subject><subject>magnetic susceptibility</subject><subject>Oxygen</subject><subject>Oxygen content</subject><subject>oxygen nonstoichiometry</subject><subject>perovskite-type oxide</subject><subject>Perovskites</subject><subject>Room temperature</subject><subject>Thermal expansion</subject><issn>0044-2313</issn><issn>1521-3749</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNo9kEtOwzAQhi0EEqWwZW2JbRP8TOxlCRSQKrEANt1YrjOBVCUJdiIIK47AYTgHh-AkpCrqZka_9GkeH0KnlMSUEHb-Ya2LGWGcEJLIPTSiktGIp0LvoxEhQkSMU36IjkJYDQglUo7Q4r6v2mcIZZjg0PrOtZ2HCa7f-yeosKurFqoW2yrHja8b8G0JAdcFXtsePOT4sqcxu7A0VjMYSlYP8U79fn79fB-jg8KuA5z89zF6nF09ZDfR_O76NpvOo4ZxLqNCQ8EFSwvOC6Ws0InLqZLLQgpt1fCM4zk4lmqtiHIJ40zmasm0TEEkzlE-RmfbucOFrx2E1qzqzlfDSsOUEIMQkWwovaXeyjX0pvHli_W9ocRs5JmNPLOTZxbTabZL_A-ydmRn</recordid><startdate>20230801</startdate><enddate>20230801</enddate><creator>Bastron, I. A.</creator><creator>Volkova, N. E.</creator><creator>Suntsov, A. Yu</creator><creator>Cherepanov, V. A.</creator><general>Wiley Subscription Services, Inc</general><scope/><orcidid>https://orcid.org/0000-0002-3497-8272</orcidid><orcidid>https://orcid.org/0000-0001-9447-0633</orcidid><orcidid>https://orcid.org/0000-0002-3488-1454</orcidid><orcidid>https://orcid.org/0000-0003-3653-6459</orcidid></search><sort><creationdate>20230801</creationdate><title>Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8‐δ</title><author>Bastron, I. A. ; Volkova, N. E. ; Suntsov, A. Yu ; Cherepanov, V. 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A.</creatorcontrib><jtitle>Zeitschrift für anorganische und allgemeine Chemie (1950)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bastron, I. A.</au><au>Volkova, N. E.</au><au>Suntsov, A. Yu</au><au>Cherepanov, V. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8‐δ</atitle><jtitle>Zeitschrift für anorganische und allgemeine Chemie (1950)</jtitle><date>2023-08-01</date><risdate>2023</risdate><volume>649</volume><issue>15</issue><epage>n/a</epage><issn>0044-2313</issn><eissn>1521-3749</eissn><abstract>It is shown that an excess of Dy in A‐site (in amount of 0.2 in formula units) allows synthesizing a single‐phase perovskite‐related oxide with the 123‐type structure at 1100 °C in air. Cobalt ions completely fill the octahedrally coordinated positions in the structure of 123‐type Dy1.2Ba1.8Fe1.8Co1.2O8‐δ, while iron together with excess Co is in the pyramidal oxygen coordination. The oxygen content at room temperature of 7.86 decreases with temperature. A slight increase in the slope of thermal expansion observed at T >200 °C. The electrical conductivity, carried out mainly by holes, increases non‐linearly with temperature, reaching a maximum value 14.8 S ⋅ cm−1 at 900 °C. Magnetic measurements allow assuming that Fe3+ are in low spin state, all Co2+ ions are in high spin, and Co3+ can be split into several states depending on coordination.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/zaac.202300065</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-3497-8272</orcidid><orcidid>https://orcid.org/0000-0001-9447-0633</orcidid><orcidid>https://orcid.org/0000-0002-3488-1454</orcidid><orcidid>https://orcid.org/0000-0003-3653-6459</orcidid></addata></record> |
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| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Cobalt Coordination electrical conductivity Electrical resistivity Magnetic measurement magnetic susceptibility Oxygen Oxygen content oxygen nonstoichiometry perovskite-type oxide Perovskites Room temperature Thermal expansion |
| title | Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8‐δ |
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