Back
 JAMP  Vol.3 No.12 , December 2015
Semi-Conducting Behavior of Plio-Quaternary Basaltic Lava Flows from Hemat Madam Volcano, Sana’a-Amran Volcanic Field, Yemen
Abstract: Electric DC and AC measurements and dielectric investigations have been carried out on some Plio-Qaternary basalt of Hemat Madam volcano from Sana’a-Amran volcanic field (SAVF). In this article we focus primarily on the field aspects and the main characteristic mineralogical and petrographic features of this inactive volcano. Using DC and AC experimental arrangements we discovered excellent electrical characteristics for this inactive volcano. The results of DC electrical resistivity versus a temperature reveal that all the samples have semiconductor characters. Moreover, the measurements showed that these samples have high resistive extrinsic semiconductors (ρDC ~ 109 Ω·m). AC and dielectric measurements were ensured the semi-conductivity and normal dielectric behavior of these samples. AC measurements reveal that the classical barrier hopping model (CBH) is the predominant conduction mechanism, while at low temperature region small polarons may contribute to the conduction in the samples. The samples have low values for dielectric constant ε' and low loss factor tanδ (ε' ~ 27 and tanδ ~ 0.7 at 200 Hz for the sample BA7). Then, the semicodutor behavior, the high values of DC/AC resistivity and low loss dissipation factor considered a very good characterization for magnetic semiconductor materials. So, we can predict that, the studied natural materials represent newborn promising material sciences for many more technological applications.
Cite this paper: Eraky, M. and Heikal, M. (2015) Semi-Conducting Behavior of Plio-Quaternary Basaltic Lava Flows from Hemat Madam Volcano, Sana’a-Amran Volcanic Field, Yemen. Journal of Applied Mathematics and Physics, 3, 1610-1618. doi: 10.4236/jamp.2015.312185.
References

[1]   Smith, R.B. and Braile, L.W. (1994) The Yellowstone Hotspot. Journal of Volcanology and Geothermal Research, 61, 121-187.
http://dx.doi.org/10.1016/0377-0273(94)90002-7

[2]   Baker, J.A., Menzies, M.A., Thirlwall, M.F. and Macpherson, C.G. (1997) Petrogenesis of Quaternary Intraplate Volcanism, Sana’a, Yemen: Implications for Plume-Lithosphere Interaction and Polybaric Melt Hybridization. Journal of Petrology, 38, 1359-1390.
http://dx.doi.org/10.1093/petroj/38.10.1359

[3]   White, R.S., Spence, G.D., Fowler, S.R., McKenzie, D.P., Westbrook, G.K. and Bowen, A.N. (1989) Magmatism and Rifted Continental Margin. Nature, 330, 439-444.
http://dx.doi.org/10.1038/330439a0

[4]   White, R.S. and McKenzie, D.P. (1989) Magmatism and Rift Zones: The Generation of Volcanic Continental Margins and Flood Basalts. Journal of Geophysical Research, 96, 7685-7729.
http://dx.doi.org/10.1029/JB094iB06p07685

[5]   Mattash, M.A., Pinarelli, L., Vaselli, O., Minissale, A., Al-Kadasi, M., Shawki, M.N. and Tassi, F. (2013) Continental Flood Basalts and Rifting: Geochemistry of Cenozoic Yemen Volcanic Province. International Journal of Geosciences, 4, 1459-1466.
http://dx.doi.org/10.4236/ijg.2013.410143

[6]   Heikal, M.Th.S., Lebda, E.M., Orihashi, Y. and Habtoor, A. (2014) Petrogenetic Evolution of Basaltic Lavas from Balhaf-Bir Ali Plio-Quaternary Volcanic Field, Arabian Sea, Republic of Yemen. Arabian Journal of Geosciences, 7, 69-86.
http://dx.doi.org/10.1007/s12517-012-0726-z

[7]   Eraky, M.R. (2012) Electrical Conductivity of Cobalt-Titanium Substituted SrCaM Hexaferrites. Journal of Magnetism and Magnetic Materials, 324, 1034-1039.
http://dx.doi.org/10.1016/j.jmmm.2011.10.021

[8]   Purushotham, Y., Kishan, P., Kumar, N. and Reddy, P.V. (1995) Electrical Transport Properties of Germanium-Substituted Lithium Ferrites. Materials Letters, 22, 47-54.
http://dx.doi.org/10.1016/0167-577X(94)00224-X

[9]   Klinger, M.I. (1975) Two-Phase Polaron Model of Conduction in Magnetite-Like Solids. Journal of Physics C: Solid State Physics, 8, 3595.
http://dx.doi.org/10.1088/0022-3719/8/21/029

[10]   Elliott, S.R. (1987) A.C. Conduction in Amorphous Chalcogenide and Pnictide Semiconductors. Advances in Physics, 36, 135.
http://dx.doi.org/10.1080/00018738700101971

[11]   Pike, G.F. (1972) AC Conductivity of Scandium Oxide and a New Hopping Model for Conductivity. Physical Review B, 6, 1572-1580.
http://dx.doi.org/10.1103/PhysRevB.6.1572

[12]   Koops, C.G. (1951) On the Dispersion of Resistivity and Dielectric Constant of Some Semiconductors at Audio Frequencies. Physical Review, 83, 121-124.
http://dx.doi.org/10.1103/PhysRev.83.121

[13]   Fayek, M.K., Elnimr, M.K., Sayedahmed, F., Ata-Allah, S.S. and Kaiser, M. (2000) Relaxation Characteristics of NiGaxFe2-xO4. Solid State Communications, 115, 109-113.
http://dx.doi.org/10.1016/S0038-1098(00)00156-3

[14]   Ravinder, D. and Latha, K. (1999) Dielectric Behaviour of Mixed Mg-Zn Ferrites at Low Frequencies. Materials Letters, 41, 247-253.
http://dx.doi.org/10.1016/S0167-577X(99)00138-X

[15]   Eraky, M.R. (2015) Abnormal Dielectric Behavior in Ti-Ni Spinel Ferrite. International Journal of Scientific Engineering and Research (IJSER), 3, 73-78.

 
 
Top