Lwin, N. and Othman, R. and Noor, A.F.M. and Sreekantan, S. and Yong, T.C. and Singh, R. and Tin, C.C. (2015) Influence of pH on the physical and electromagnetic properties of Mg-Mn ferrite synthesized by a solution combustion method. Materials Characterization, 110. pp. 109-115. ISSN 1044-5803,
Full text not available from this repository.Abstract
The synthesis of nano-crystalline Mg-Mn ferrites by a solution combustion method using citric acid and ammonia was investigated by varying the pH of the precursor solution, which played an important role in controlling the morphology of the synthesized powders. The phase formation, microstructure and electromagnetic properties were studied using X-ray diffraction, scanning electron microscopy, impedance analyzer and vibrating sample magnetometer. Single phase pure spinel Mg-Mn ferrite powders were obtained for all the samples at different pH (< 1, 3, 5, 7, 9). The results showed that an increase of pH improves the crystallinity of the Mg-Mn ferrite nanoparticles. The average grain size of sintered samples was found to decrease from 2 mu m to 0.5 mu m with increasing pH values from pH < 1 to pH 9, respectively. The dielectric constant of the samples with different pH is in the range of 7-12 from frequencies of 1 MHz to 1 GHz. The highest saturation magnetization (30.04 emu/g) was obtained for the sample with pH < 1. (C) 2015 Elsevier Inc. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Nanocrystallite; Solution-combustion; Spinel; Ferrites; Electromagnetic |
| Subjects: | Q Science > Q Science (General) |
| Depositing User: | Mrs. Siti Mawarni Salim |
| Date Deposited: | 15 Sep 2016 02:39 |
| Last Modified: | 15 Sep 2016 02:39 |
| URI: | http://eprints.um.edu.my/id/eprint/16453 |
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