Magnetic Field Effects Induced in Electrical Devices Based on Cotton Fiber Composites, Carbonyl Iron Microparticles and Barium Titanate Nanoparticles

• Published in: Nanomaterials (Basel, Switzerland) Vol. 12; no. 5; p. 888
• Main Authors: Pascu, Gabriel, Bunoiu, Octavian Madalin, Bica, Ioan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 07.03.2022; MDPI
• Subjects: Analytical chemistry; Barium; barium titanate nanoparticles; Barium titanates; Carbonyl compounds; carbonyl iron; Carbonyls; Composite materials; Composition; Cotton; cotton fabric; Cotton fibers; Fiber composites; Fibers; Iron; Magnetic fields; Magnetism; magnetocapacitive effects; magnetopiezoelectric effects; magnetoresistive effects; Magnetoresistivity; Manufacturing; Medical equipment; Microparticles; Morphology; Nanoparticles; Physical characteristics; Physical properties; Sensors; Germany; barium titanate nanoparticles; cotton fabric; magnetopiezoelectric effects; magnetocapacitive effects; magnetoresistive effects; carbonyl iron
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano12050888

This work consists in the process of preparing magnetic active composite materials based on cotton fibers, iron carbonyl microparticles and barium titanate nanoparticles, and the electrical devices manufactured with them. For different compositions of the aforementioned ingredients, three such composites are manufactured and compacted at constant pressure between two electrodes. In the absence and in the presence of a magnetic field, using an RLC bridge, magnetocapacitive, magnetoresistive and magnetopiezoelectric effects are highlighted in the custom fabricated devices. It is shown that these effects are significantly influenced by the composition of the materials. Based on the model elaborated in this paper, the mechanisms that contribute to the observed effects are described and the theoretical predictions are shown to agree with the experimental data. The obtained results can be used in the assembly of hybrid magnetic active composites, which are low cost, ecological and have other useful physical characteristics for applications.