Structural Phase Transitions in YBaCo4O7 + x Cobaltate upon Variations in Oxygen Content, According to X-Ray Diffraction Data obtained Using Synchrotron Radiation Full article
| Journal |
Bulletin of the Russian Academy of Sciences: Physics
ISSN: 1062-8738 , E-ISSN: 1934-9432 |
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| Output data | Year: 2013, Volume: 77, Number: 2, Pages: 151-154 Pages count : 4 DOI: 10.3103/S1062873813020044 | ||||
| Tags | Oxygen Content; Terahertz Radiation; Kagome Lattice; Rhombic Distortion; Initial Oxygen Content | ||||
| Authors |
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| Affiliations |
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Funding (4)
| 1 | Russian Foundation for Basic Research | 10-02-00532 |
| 2 | Russian Foundation for Basic Research | 10-02-01005 |
| 3 | Siberian Branch of the Russian Academy of Sciences | 53 |
| 4 | The Ministry of Education and Science of the Russian Federation |
Abstract:
According to thermogravimetric data, the equilibrium oxygen content in layered YBaCo4O7 + x cobaltate varies stepwise from x ≈ 1.4 to x ≈ 0 when temperature is varied in the range of 300–400°C. Detailed ex situ and in situ structural investigations using synchrotron radiation show that variation in the oxygen content in YBaCo4O7 + x is accompanied by substantial reordering of the crystal structure and has the character of a first-order phase transition between two rigorously determined phases that differ by the parameters and symmetry of the crystal lattice as well as by the oxygen content. In addition to uniquely high oxygen liberation upon heating, dx/dT, great mechanical stresses that lead to the material cracking and complicate its practical use are a consequence of the character of stepwise transitions in YBaCo4O7 + x .
Cite:
Alekseev A.V.
, Kameneva M.Y.
, Kozeeva L.P.
, Lavrov A.N.
, Podberezskaya N.V.
, Smolentsev A.I.
, Shmakov A.N.
Structural Phase Transitions in YBaCo4O7 + x Cobaltate upon Variations in Oxygen Content, According to X-Ray Diffraction Data obtained Using Synchrotron Radiation
Bulletin of the Russian Academy of Sciences: Physics. 2013. V.77. N2. P.151-154. DOI: 10.3103/S1062873813020044 Scopus РИНЦ ANCAN OpenAlex
Structural Phase Transitions in YBaCo4O7 + x Cobaltate upon Variations in Oxygen Content, According to X-Ray Diffraction Data obtained Using Synchrotron Radiation
Bulletin of the Russian Academy of Sciences: Physics. 2013. V.77. N2. P.151-154. DOI: 10.3103/S1062873813020044 Scopus РИНЦ ANCAN OpenAlex
Original:
Алексеев А.В.
, Каменева М.Ю.
, Козеева Л.П.
, Лавров А.Н.
, Подберезская Н.В.
, Смоленцев А.И.
, Шмаков А.Н.
Структурный фазовый переход в кобальтате YBaCo4O7+δ при изменении содержания кислорода по данным рентгеновской дифракции на синхротронном излучении
Известия Российской академии наук. Серия физическая. 2013. Т.77. №2. С.173-176. DOI: 10.7868/S036767651302004X РИНЦ OpenAlex
Структурный фазовый переход в кобальтате YBaCo4O7+δ при изменении содержания кислорода по данным рентгеновской дифракции на синхротронном излучении
Известия Российской академии наук. Серия физическая. 2013. Т.77. №2. С.173-176. DOI: 10.7868/S036767651302004X РИНЦ OpenAlex
Dates:
| Published print: | Feb 1, 2013 |
| Published online: | Mar 8, 2013 |
Identifiers:
| Scopus: | 2-s2.0-84876493440 |
| Elibrary: | 20437354 |
| Chemical Abstracts: | 2013:368084 |
| Chemical Abstracts (print): | 159:299132 |
| OpenAlex: | W2109049153 |