| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Prev
Next
|
|
|
Dielectric behavior of Cu-Zn ferrites with Si additive |
| Uzma G |
| Department of Physics, University of Wah, Wah Cantt, Pakistan |
|
|
|
|
Abstract Since ferrites are highly sensitive to the additives present in or added to them, extensive work, to improve the properties of basic ferrites, has been carried out on these aspects. The present paper reports the effects of composition, frequency, and temperature on the dielectric behavior of a series of CuxZn1-xFe2O4 ferrite samples prepared by the usual ceramic technique. In order to improve the properties of the samples, low cost Fe2O3 having 0.5 wt.% Si as an additive is selected to introduce into the system. The dielectric constant increases by increasing the Cu content, as the electron exchange of Cu2+<=>Cu+ is responsible for the conduction and the polarization. However, the addition of Si could decrease the dielectric constant as it suppresses the ceramic grain growth and promotes the quality factor at higher frequencies. Dielectric constant ε' and loss tangent tanδ of the mixed Cu-Zn ferrite decrease with increasing frequency, attributed to the Maxwell-Wagner polarization, which increases as the temperature increases.
|
Received: 14 September 2013
Revised: 08 November 2013
Accepted manuscript online:
|
|
PACS:
|
75.30.Hx
|
(Magnetic impurity interactions)
|
| |
75.47.Lx
|
(Magnetic oxides)
|
| |
75.50.Cc
|
(Other ferromagnetic metals and alloys)
|
|
Corresponding Authors:
Uzma G
E-mail: uzigh@yahoo.com
|
| About author: 75.30.Hx; 75.47.Lx; 75.50.Cc |
Cite this article:
Uzma G Dielectric behavior of Cu-Zn ferrites with Si additive 2014 Chin. Phys. B 23 057502
|
| [1] |
Mahmoud M H and Sattar A A 2004 J. Magn. Magn. Mater. 277 101
|
| [2] |
Wu K H, Chang Y C and Wang P 2004 J. Magn. Magn. Mater. 269 150
|
| [3] |
Snelling E C 1988 Soft Ferrites: Properties and Applications (2nd edn.) (London: Butter Worth and Co. Ltd) p. 339
|
| [4] |
Goldman A 1990 Modern Ferrite Technology (2nd edn.) (New York: Van Nostrand Reinhold) p. 263
|
| [5] |
Ajmal M and Maqsood A 2008 J. Alloys Comp. 460 54
|
| [6] |
Uzma G and Abbas G 2010 Key Engineering Materials 442 221
|
| [7] |
Abdeen A M 1999 J. Magn. Magn. Mater. 192 121
|
| [8] |
Mangalaraya R V, Kumar S A, Manohar P, Gnanam F D and Awano M 2004 Mater. Lett. 58 1593
|
| [9] |
Bao J, Zhou J, Yue Z X, Li L T and Gui Z L 2002 J. Magn. Magn. Mater. 250 131
|
| [10] |
Mohammad E M, Malins K A, Kurian P and Anantharaman M R 2002 Mater. Res. Bulle. 37 753
|
| [11] |
Zhang H G, Zhou J, Wang Y, Li L T and Yue Z X 2002 Mater. Lett. 55 351
|
| [12] |
Korekar C B, Kamble D N, Kulkarni S G and Varangankar A S 1995 J. Mater. Sci. 30 5784
|
| [13] |
WU K H, Chang Y C, Chang T C, Chiu Y S and Wu T R 2004 J. Magn. Magn. Mater. 283 380
|
| [14] |
Prakash C and Baijal J S 1985 J. Less-Comm. Metals 107 51
|
| [15] |
Singh A K, Singh A K and Goel T C 2004 J. Magn. Magn. Mater. 281 276
|
| [16] |
Mangalaraja R V, Kumar S A, Manohar P and Gnanam F D 2002 J. Magn. Magn. Mater. 253 56
|
| [17] |
Guyot M 1980 J. Magn. Magn. Mater. 15-18 925
|
| [18] |
Wang X H, Li L L, Yue Z X and Su SY 2004 J. Magn. Magn. Mater. 271 301
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
