Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8-δ

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Synthesis, structure, oxygen content and properties of layered Dy_1.2Ba_1.8Fe_1.8Co_1.2O_8-δ. / Bastron, I.; Volkova, N.; Suntsov, A. et al.
In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 649, No. 15, 2023.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{07d26d02f43140f2aa019b1458429d6b,

title = "Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8-δ",

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. {\textcopyright} 2023 Wiley-VCH GmbH.",

author = "I. Bastron and N. Volkova and A. Suntsov and V. Cherepanov",

note = "VAC was supported by the Ministry of Science and Higher Education of Russian Federation (State task No 123031300049‐8). Magnetic susceptibility measurements were made under government assignment for the ISSC UB RAS (theme N○ AAAA‐A19‐119110190048‐7). Текст о финансировании #2 VAC was supported by the Ministry of Science and Higher Education of Russian Federation (State task No 123031300049-8). Magnetic susceptibility measurements were made under government assignment for the ISSC UB RAS (theme N○ AAAA-A19-119110190048-7).",

year = "2023",

doi = "10.1002/zaac.202300065",

language = "English",

volume = "649",

journal = "Zeitschrift fur Anorganische und Allgemeine Chemie",

issn = "0044-2313",

publisher = "Wiley-VCH Verlag",

number = "15",

}

RIS

TY - JOUR

T1 - Synthesis, structure, oxygen content and properties of layered Dy1.2Ba1.8Fe1.8Co1.2O8-δ

AU - Bastron, I.

AU - Volkova, N.

AU - Suntsov, A.

AU - Cherepanov, V.

N1 - VAC was supported by the Ministry of Science and Higher Education of Russian Federation (State task No 123031300049‐8). Magnetic susceptibility measurements were made under government assignment for the ISSC UB RAS (theme N○ AAAA‐A19‐119110190048‐7). Текст о финансировании #2 VAC was supported by the Ministry of Science and Higher Education of Russian Federation (State task No 123031300049-8). Magnetic susceptibility measurements were made under government assignment for the ISSC UB RAS (theme N○ AAAA-A19-119110190048-7).

PY - 2023

Y1 - 2023

N2 - 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. © 2023 Wiley-VCH GmbH.

AB - 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. © 2023 Wiley-VCH GmbH.

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UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=001030434900001

U2 - 10.1002/zaac.202300065

DO - 10.1002/zaac.202300065

M3 - Article

VL - 649

JO - Zeitschrift fur Anorganische und Allgemeine Chemie

JF - Zeitschrift fur Anorganische und Allgemeine Chemie

SN - 0044-2313

IS - 15

ER -

ID: 43261509