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Strong suppression of Curie temperature of spin-polarized ferromagnet La1−xSrxMnO3 by application of dynamic strain

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العنوان: Strong suppression of Curie temperature of spin-polarized ferromagnet La1−xSrxMnO3 by application of dynamic strain
المؤلفون: M. Mito, K. Tsuruta, T. Tajiri, N. Ikeda, M. Ohkuma, A. Kohno, K. Konishi, H. Deguchi
المصدر: AIP Advances, Vol 10, Iss 2, Pp 025220-025220-7 (2020)
بيانات النشر: AIP Publishing LLC
سنة النشر: 2020
المجموعة: Directory of Open Access Journals: DOAJ Articles
مصطلحات موضوعية: Physics, QC1-999
الوصف: The ferromagnetic state of the spin-polarized ferromagnet La1−xSrxMnO3 is stabilized in the metallic region by strong coupling between localized spins in the t2g orbital and conduction electrons in the eg orbital. We prepared polycrystalline La1−xSrxMnO3 films (x = 0.15, 0.25, or 0.30) by deposition on an oxidized Si substrate. The three types of La1−xSrxMnO3 films were in the ferromagnetic rhombohedral phase, and their Curie temperatures, TC, evaluated from the midpoint of ac magnetization, were 305 K, 335 K, and 338 K, respectively. By applying expansion-mode acoustic vibration to the crystal structure of La1−xSrxMnO3, we observed a remarkable decrease (as large as 70 K) in TC. The applied structural perturbation causes a decrease in the possibility of conduction electron hopping and an increase in the Jahn–Teller distortion. The former is more effective for decreasing TC than the latter.
نوع الوثيقة: article in journal/newspaper
اللغة: English
تدمد: 2158-3226
العلاقة: http://dx.doi.org/10.1063/1.5124951Test; https://doaj.org/toc/2158-3226Test; https://doaj.org/article/abc22f93087e4020b26a38901324169cTest
DOI: 10.1063/1.5124951
الإتاحة: https://doi.org/10.1063/1.5124951Test
https://doaj.org/article/abc22f93087e4020b26a38901324169cTest
رقم الانضمام: edsbas.51CCB800
قاعدة البيانات: BASE
الوصف
تدمد:21583226
DOI:10.1063/1.5124951