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Short-range antiferromagnetic interaction and spin-phonon coupling in La.sub.2./sub.CoMnO.sub.6./sub. double perovskite
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SYSNO ASEP 0565426 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Short-range antiferromagnetic interaction and spin-phonon coupling in La2CoMnO6 double perovskite Author(s) Silva, R.X. (BR)
Santos, C.C. (BR)
Reichlová, Helena (FZU-D) RID, ORCID
Martí, Xavier (FZU-D) RID, ORCID
Paniago, R. (BR)
Paschoal, C.W.A. (BR)Number of authors 6 Article number 103426 Source Title Vibrational Spectroscopy. - : Elsevier - ISSN 0924-2031
Roč. 123, Nov (2022)Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords Raman spectroscopy ; spin-phonon coupling ; double perovskites ; antisite disorder Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 EID SCOPUS 85137557190 DOI 10.1016/j.vibspec.2022.103426 Annotation Weak antiferromagnetic (AFM) interaction in the ferromagnetic (FM) partially ordered La2CoMnO6 (LCMO) was detected by Raman spectroscopy by monitoring spin-phonon coupling. Because of the sensibility to probe short-range disorder and lattice modifications, the Raman spectroscopy showed to be an useful tool to indicate less remarkable magnetic transitions in LCMO compound. Apart from the expected spin-phonon coupling due to the long-range FM superexchange (Tc ∼230 K), phonons parameters pointed out an additional spin-phonon coupling related to the short-range AFM interaction at Tc ∼135 K, which was not detected from the magnetic bulk response. These results reinforce the Raman spectroscopy as a powerful technique to detect antisite disorder into A2B′B’’O6 magnetic double perovskites, whose magnetic properties are driven by superexchange interactions. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://doi.org/10.1016/j.vibspec.2022.103426
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