Magneto-electric coupling in multiferroic nanocomposites of the type x (NaK)LiNbO- (1−x) CoFeO: Role of ferrite phase
| Autor: | Johney Isaac, Jacob Philip, R. Rakhikrishna |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Nanocomposite Molar mass Process Chemistry and Technology Poling 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Piezoelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials Magnetic field Nuclear magnetic resonance 0103 physical sciences Materials Chemistry Ceramics and Composites Ferrite (magnet) Multiferroics Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 43:664-671 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2016.09.212 |
| Popis: | Lead free multiferroic nanocomposites of Sodium Potassium Lithium Niobate-Cobalt Ferrite xNKLN – (1-x) CFO with molar weight percentages x=0.70, 0.75, 0.80, 0.85 are prepared by solid-state reaction. Samples are characterized using powder XRD, FT-IR, TEM, and magnetic measurements. Piezoelectric properties of the samples are measured and analyzed. After poling, the dielectric properties show resonance/relaxation peaks at certain frequencies. Magneto-dielectric coefficients corresponding to dielectric constant and loss are reported. The magneto-electric coefficient of the material is measured following a dynamic measurement method. Maximum value of magneto-electric coefficient obtained is 0.0157 V/cm-Oe, which is good for a lead free sample prepared by this route, but lower than the corresponding nickel ferrite (NFO) based samples. The lower magneto-electric response of CFO based composites is explained as due the material being magnetically harder. Changes in physical properties with applied magnetic field make them promising for applications like eco-friendly sensors and actuators. |
| Databáze: | OpenAIRE |
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