Lakshmikantha, J. and Krishnamurthy, G. and Hanumantha Nayak, R. and Pari, Malathesh and Ranjitha, N. and Naik, Nagaraj (2022) Synthesis, structure, thermal, magnetic, dielectric properties of Ce3+doped M-type SrFe12O19 and electrochemical determination of L-cysteine. Inorganic Chemistry Communications, 146. ISSN 1879-0259
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Cerium substituted SrFe12O19 with the nano composition of Sr(1-x)CexFe12O19 (x = 0.00, 0.01, 0.05 and 0.09) have been prepared using auto-combustion technique with dual fuel. The PXRD images confirmed a single-phase hexagonal crystalline structure similar to a magnetoplumbhite for all samples. Fourier transform infra-red spec-troscopy (FT-IR), field emission-scanning electron spectroscopy (FE-SEM), elemental mapping (EDS) were used to examine for the structure and morphology of the samples. The temperature dependent hexagonal phase formation and percentage weight loss was studied by thermogravimetric and differential thermal analysis (TG-DTA). Vibrating sample magnetometer (VSM) analysis confirmed that M-SrHF's are hard magnetic in nature and super paramagnetic, these are measured at room temperature. It was found that, with the increase of the dopant Ce3+ in strontium ferrites, the values of saturation magnetization (MS), remanence magnetization (Mr), coer-civity (HC) and magnetic parameters of strontium ferrites decrease. The electrochemical behavior of the SrHF's electrode and the electro-oxidation of L-cysteine was investigated using of cyclic voltammetry (CV). The best voltammetric response has been observed for a SrHF's electrode in buffer solution at pH of 7.0 with -an acquisition and scan rate of 50 mV s-1. The dielectric properties are measured in LCR meter and described based on the Maxwell-Wagner's two layer model. The electron hopping between Sr2+ and Sr3+, as well as Fe3+ and Fe2+ ions on B-sites, drives the conduction mechanism in these ferrites, these nano hexaferrites which shows its suitability in various technological applications.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Rare earth element; Dielectric parameters; Magnetic properties and cyclic voltammetry (L-cysteine) |
| Subjects: | C Chemical Science > Chemistry |
| Divisions: | Department of > Chemistry |
| Depositing User: | C Swapna Library Assistant |
| Date Deposited: | 04 Sep 2023 09:48 |
| Last Modified: | 04 Sep 2023 09:48 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/17715 |
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