Effect of magnetic field on ferroelectric output voltage: a study on La0.7Sr0.3MnO3 (LSMO)/P(VDF-TrFE) flexible multiferroic nanocomposite films
| Autor: | Sougata Koner, Rashmi Singh, Anju Ahlawat, Archna Sagdeo, Pratik Deshmukh, S. Satapathy, A.K. Karnal |
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| Rok vydání: | 2021 |
| Předmět: |
Nanocomposite
Materials science Analytical chemistry Nanoparticle Dielectric Condensed Matter Physics Ferroelectricity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Magnetic field Ferromagnetism Curie temperature Multiferroics Electrical and Electronic Engineering |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 32:21780-21797 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-021-06699-4 |
| Popis: | La0.7Sr0.3MnO3 (LSMO)/poly(vinylidenefluoride-co-trifluoroethylene)(P(VDF-TrFE) particulate nanocomposite films prepared to produce large magnetoelectric (ME) voltage at room temperature for multifunctional device applications. LSMO nanoparticles (NPs) were prepared by sol–gel auto-combustion method and these NPs belong to space group R-3c. LSMO/P(VDF-TrFE) (0–3) nanocomposite (NC) films were prepared by solution casting method for different volume percentage of LSMO in P(VDF-TrFE). Dielectric and DC leakage current density(J) analysis of these NCs reveal very small loss tangents (~ 0.01) and very small leakage current density J ~ 10−7 A/mm2 respectively, which further demonstrate the uniform distribution of NPs in P(VDF-TrFE) matrix. Room temperature M-H and low temperature M-T analysis of LSMO NPs confirm ferromagnetic nature with Curie temperature at ~ 368 K. LSMO/P(VDF-TrFE) NC films exhibit multiferroic properties up to 5% volume percentage of LSMO at room temperature. A maximum ME voltage 11.68 mV is produced corresponding to giant transverse ME voltage coefficient ( $${\alpha }_{31}^{V})$$ = 155.74 mVOe−1 cm−1 at DC magnetic field (Hdc) = 2.57 kOe and AC magnetic fileld(Hac) = 25Oe for 0.5% LSMO volume percentage NC films. A self bias ME voltage 11.3175 mV is observed at zero Hdc for 0.5% LSMO volume percentage NC films, which can be used inpotential ME devices.The variation of ME voltage coefficient $$\left({\alpha }^{V}\right)$$ at different angles between P and applied magnetic field(Hdc) for 0.5% LSMO NC films is also reported which shows $${\alpha }^{V}$$ is maximum at the angles 90o and 270o. |
| Databáze: | OpenAIRE |
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