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Title: High-temperature magnetodielectric Bi(Fe0.5Mn0.5)O3 thin films with checkerboard-ordered oxygen vacancies and low magnetic damping
Author: Coy, Emerson Coy
Fina Martínez, Ignasi
Zaleski, Karol
Krysztofik, Adam
Yate, Luis
Rodriguez, Lousa
Graczyk, Piotr
Glowinski, Hubert
Ferrater Martorell, Cèsar
Dubowik, Janusz
Varela Fernández, Manuel, 1956-
Keywords: Pel·lícules fines
Thin films
Issue Date: 30-Nov-2018
Publisher: American Physical Society
Abstract: The possibility of affecting the magnetic properties of a material by dielectric means, and vice versa, remains an attractive perspective for modern electronics and spintronics. Here, we report on epitaxial Bi(Fe0.5Mn0.5)O3 thin films with exceptionally low Gilbert damping and magnetoelectric coupling above room temperature (<400 K). The ferromagnetic order, not observed in bulk, has been detected with a total magnetization of 0.44 μB/formula units with low Gilbert damping parameter (0.0034), both at room temperature. Additionally, a previously overlooked check-board ordering of oxygen vacancies is observed, providing insights on the magnetic and dielectric origin of the multifunctional properties of the films. Finally, intrinsic magnetodielectric behavior is observed as revealed by the variation of dielectric permittivity well above room temperature. These findings show the possibility of electric-field-controlled magnetic properties, in low Gilbert-damping-based spintronic devices, using single-phase multiferroic materials
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It is part of: Physical Review Applied, 2018, vol. 10, p. 054072
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ISSN: 2331-7019
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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