Mondal, R. A. ; Murty, B. S. ; Murthy, V. R. K. (2014) Maxwell–Wagner polarization in grain boundary segregated NiCuZn ferrite Current Applied Physics, 14 (12). pp. 1727-1733. ISSN 1567-1739
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.cap.2014.10.005
Abstract
The present work investigates the polarization response in polycrystalline Ni0.9−yCuyZn0.1Fe1.98O4−δ (y = 0, 0.1, 0.2, 0.3, 0.4, 0.5) ferrite synthesized by solid–state reaction method. X-ray diffraction analysis confirmed cubic spinel phase formation in the calcined samples. Sintered samples contain a continuous network of CuO-rich segregation along the grain boundaries for y ≥ 0.2. Dielectric spectra showed a relaxation peak for y ≥ 0.2 in the frequency range of 1 kHz–1 MHz. This relaxation has been explained based on Maxwell–Wagner polarization considering two-layer model in connection with two heterogeneous dielectric media.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Solid-state Reaction; Nyquist Plot; Grain Boundary Segregation; Maxwell–Wagner Polarization |
| ID Code: | 110938 |
| Deposited On: | 06 Dec 2017 11:08 |
| Last Modified: | 06 Dec 2017 11:08 |
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