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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(08) [August 2010] >
| Title: | Dielectric properties of TixLi1-xLa0.1Fe1.9O4 ferrite thin films |
| Authors: | Abdelmoneim, H M |
| Keywords: | Dielectric constant
Loss factor
ac Conductivity
CBH model |
| Issue Date: | Aug-2010 |
| Publisher: | CSIR |
| Abstract: | The
variation of dielectric constant (ε'), dielectric loss factor (ε") and the
ac conductivity (σac) of mixed TixLi1-xLa0.1Fe1.9O4
(where x = 0.1, 0.3, 0.5, 0.7 and 0.9) ferrite thin films has been studied
as a function of both frequency and temperature. The variation of dielectric
constant with different temperature in all films gives a broad peak. The
maximum peak is almost fixed at 500 K independent of lithium content. The ε'(f)
and ε"( f ) curves at different temperatures for all
samples show a higher dispersion in the low frequency region. The conduction
phenomenon is explained on the basis of a correlated barrier hopping (CBH)
model. According to the CBH model, the maximum barrier height at infinite
separation (UM) is determined |
| Page(s): | 562-570 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(08) [August 2010]
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