Email this article Structural features of bilayer manganite La1.4Sr1.6(Mn0.9Co0.1)2O7
- Authors: Matveeva A.N.1, Terent'ev K.Y.1, Orlova V.A.2, Bykov A.A.1
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Affiliations:
- Saint Petersburg Institute of Nuclear Physics named after B. P. Konstantinov of the National Research Center 'Kurchatov Institute'
- Radium Institute named after V. G. Khlopina
- Issue: Vol 61, No 5–6 (2025)
- Pages: 346-351
- Section: Articles
- URL: https://journal-vniispk.ru/0002-337X/article/view/308704
- DOI: https://doi.org/10.31857/S0002337X25030109
- EDN: https://elibrary.ru/lbxued
- ID: 308704
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Abstract
Методом оптической зонной плавки выращены монокристаллы La1.4Sr1.6(Mn1–xCox)2O7 (x = 0, 0.1). Методом дифракции исследованы кристаллические структуры полученных образцов, впервые определена кристаллическая структура фазы La1.4Sr1.6(Mn0.9Co0.1)2O7. Частичное замещение марганца на кобальт в структуре La1.4Sr1.6Mn2O7 приводит к искажению (вытягиванию вдоль оси с) кислородных октаэдров MO6. Параметр ян-теллеровских искажений в структуре La1.4Sr1.6Mn2O7, по нашим расчетам, составил ΔJT = 1.0396, а в структуре La1.4Sr1.6(Mn0.9Co0.1)2O7 ΔJT = 1.0193. Отличное от 1 значение параметра ян-теллеровских искажений говорит о наличии искажений в октаэдрах MnO6 и MO6 (M–Mn/Co) и, как следствие, о возможном эффекте Яна–Теллера.
About the authors
A. N. Matveeva
Saint Petersburg Institute of Nuclear Physics named after B. P. Konstantinov of the National Research Center 'Kurchatov Institute'
Email: matveeva_an@pnpi.nrcki.ru
Orlova Rosha Microdistrict, 1, Gatchina, 188300 Russia
K. Y. Terent'ev
Saint Petersburg Institute of Nuclear Physics named after B. P. Konstantinov of the National Research Center 'Kurchatov Institute'Orlova Rosha Microdistrict, 1, Gatchina, 188300 Russia
V. A. Orlova
Radium Institute named after V. G. Khlopina2nd Murinsky Avenue, 28, Saint Petersburg, 194021 Russia
A. A. Bykov
Saint Petersburg Institute of Nuclear Physics named after B. P. Konstantinov of the National Research Center 'Kurchatov Institute'Orlova Rosha Microdistrict, 1, Gatchina, 188300 Russia
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