Title Room temperature Co-doped manganite/graphene sensor operating at high pulsed magnetic fields /
Authors Lukošė, Rasuolė ; Žurauskienė, Nerija ; Stankevič, Voitech ; Vagner, Milita ; Plaušinaitienė, Valentina ; Niaura, Gediminas ; Keršulis, Skirmantas ; Balevičius, Saulius ; Bolli, Eleonora ; Mezzi, Alessio ; Kaciulis, Saulius
DOI 10.1038/s41598-019-46012-2
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Is Part of Scientific reports.. London : Nature Publishing Group. 2019, vol. 9, art. no. 9497, p. 1-10.. ISSN 2045-2322
Keywords [eng] Room temperature ; Co-doped manganite ; graphene ; magnetic fields
Abstract [eng] The demand to increase the sensitivity to magnetic field in a broad magnetic field ranges has led to the research of novel materials for sensor applications. Therefore, the hybrid system consisting of two different magnetoresistive materials – nanostructured Co-doped manganite La1−xSrx(Mn1−yCoy)zO3 and single- and few-layer graphene – were combined and investigated as potential system for magnetic field sensing. The negative colossal magnetoresistance (CMR) of manganite-cobaltite and positive one of graphene gives the possibility to increase the sensitivity to magnetic field of the hybrid sensor. The performed magnetoresistance (MR) measurements of individual few layer (n = 1–5) graphene structures revealed the highest MR values for three-layer graphene (3LG), whereas additional Co-doping increased the MR values of nanostructured manganite films. The connection of 3LG graphene and Co-doped magnanite film in a voltage divider configuration significantly increased the sensitivity of the hybrid sensor at low and intermediate magnetic fields (1–2 T): 70 mV/VT of hybrid sensor in comparison with 56 mV/VT for 3LG and 12 mV/VT for Co-doped magnanite film, respectively, and broadened the magnetic field operation range (0.1–20) T of the produced sensor prototype.
Published London : Nature Publishing Group
Type Journal article
Language English
Publication date 2019