Magnetoelectric effect probe through ppm Fe doping in BaTiO3
authors Figueiras, FG; Amorim, CO; Amaral, J; Moreira, JA; Tavares, PB; Alves, E; Amaral, VS
nationality International
journal JOURNAL OF ALLOYS AND COMPOUNDS
author keywords BaTiO3; Phase diagram; Magnetization; Proton Induced X-Ray Emission (PIXE); Magnetoelectric effect
keywords PHASE-TRANSITION; FERROMAGNETISM; TEMPERATURE; TITANATE; IONS
abstract The nominal BaTiO3 compound often exhibits an assortment of controversial magnetic signals which can be simply explained through minute presence of spurious magnetic elements in the perovskite matrix, even when this compound is synthesized from high grade Ba and Ti precursors. Proton Induced X-Ray Emission (PIXE) technique enable to confirm similar to 100 ppm of Fe contaminant which masks the utterly BaTiO3 diamagnetism. Nevertheless, besides the expected paramagnetism of highly diluted Fe ions, it is also possible to observe a cooperative magnetic moment signature which exhibits an intricate relation with the phase transitions of the BaTiO3 matrix. Such magneto-electric coupling signature is further corroborated by Raman spectroscopy, dielectric and X-ray diffraction measurements, indicating to a partial segregation of a rich Fe oxide phase, having a local structure clamped to the perovskite crystallites, hence acting as a practical probe sensitive to the local structural transitions of the host material. (C) 2015 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 0925-8388
year published 2016
volume 661
beginning page 495
ending page 500
digital object identifier (doi) 10.1016/j.jallcom.2015.11.199
web of science category Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000367521200070
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  impact metrics
times cited (wos core): 1
journal impact factor (jcr 2016): 3.133
5 year journal impact factor (jcr 2016): 2.919
category normalized journal impact factor percentile (jcr 2016): 78.546
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