Ahmad Nazlim Yusoff , and Mustaffa Hj. Abdullah, (1997) The A.C. electrical response from the grain and grain boundary components of a Li0.25Ni0.2Zn0.3Fe2.25O4 ferrite. Sains Malaysiana, 26 (3&4). pp. 87-98. ISSN 0126-6039
Full text not available from this repository.
Official URL: http://www.ukm.my/jsm/english_journals/vol26num3an...
Abstract
The a.c. electrical response of a polycrystalline Li0.25Ni0.2Zn0.3Fe2.25O4 ferrite is studied by means of impedance spectroscopy. The impedance measurement was performed at different input voltage amplitudes in ten decades of frequency (1 mHz - 10 MHz). Two overlapping semicircles with negative capacitance phenomenon below 1 Hz are observed at all amplitudes. The two semicircles are mainly attributed to the grain and grain boundary processes at high and low frequencies respectively. The grain boundary impedance shows a non-linear dependence on the input voltage, where the corresponding impedance semicircle is smaller for larger amplitude. However, a linear response is observed for the grain component. The dependence of the a.c. electrical properties of the grain and grain boundary components on the amplitude of the input voltage is discussed.
| Item Type: | Article |
|---|---|
| Journal: | Sains Malaysiana |
| ID Code: | 3757 |
| Deposited By: | Mr Fazli Nafiah - |
| Deposited On: | 19 Mar 2012 03:16 |
| Last Modified: | 19 Mar 2012 03:16 |
Repository Staff Only: item control page
