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Multiphase microwave dielectrics

[1] WERSING W., Curr. Opin. Solid State Mater. Sci., 1 (1996), 715. [2] SEBASTIAN M.T., Dielectric Materials for Wireless Communication, Elsevier Science, Oxford, U.K., 2008. [3] HUGHES H., IDDLES D.M., and REANEY I.M., Appl. Phys. Letters. 79[18] (2001), 2952. [4] LEE H.J., HONG K.S., KIM S.J., and KIM I.T., Mat. Res. Bull., 32[7] (1997), 847.

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Colossal dielectric constant of NaNbO3 doped BaTiO3 ceramics

the electron concentration and if the grain size is below 1 μm, diffusion of the defects from the grain boundary to the center may lead to enhanced insulation on the boundary under higher sintering temperature [4] . In order to better balance the non-stoichiometric effect caused by Nb doping, appropriate acceptor doping is seriously taken into account. The development of BaTiO 3 -based high dielectric-constant-materials is necessary for potential applications [5] . Abdelkefi et al. [6] presented a detailed report on xNaNbO 3 –BaTiO 3 solid solution (x ranging

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Non-Contact Measurement of the Thickness and Dielectric Parameters of Dielectric Plates and Shells

References 1. Matiss, I. (2014). Multi-element sensor for non-destructive measurement of the dielectric permittivity and thickness of dielectric plates and shells. NDT and E International, 66, 99-105. 2. Armitage D. H., & Gardiner, S. J. (2001). Classical Potential Theory. Springer, pp. 89-118. 3. Matiss, I. (2011). Electrical Measurement Techniques -a New Challenge for Non- Destructive Testing. Publishing House of Riga Technical University, Riga (in Latvian), pp.44-56. 4. Venema, G.A. (2005

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Influence of Radiation on the Dielectric Properties of XLPE Based Insulation Systems

References ZAENGL, W. S.: Dielectric Spectroscopy in Time and Frequency Domain for HV Power Equipment, 12th Internat. Symposium on High Voltage Engineering - ISH 2001, Bangalore, India, 20-24 August 2001, 1-10. COLE, K. S.—COLE, R. H.: Dispersion and Absorption in Dielectrics, I. Alternating Current, J. Phys. Chem. No. 9 (1941), 341-351. HAVRILIAK, S.—NEGAMI, S.: A Complex Plane Analysis of -Dispersions in Some Polymer Systems, J. Polymer Sci. C 14 (1966), 99

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Determination of Relationship between Dielectric Properties, Compressive Strength, and Age of Concrete with Rice Husk Ash Using Planar Coaxial Probe

.C., Islam, M.N. (2012). Strength of mortar and concrete as influenced by rice husk ash: A review. Word Applied Sciences Journal, 19 (10), 1501-1513. [10] Krishna, R.N. (2012). Rice husk ash - an ideal admixture for concrete in aggressive environments. In 37th Conference on Our World in Concrete & Structures, 29-31 August 2012, Singapore. [11] Jamil, M., Hassan, M.K., Al-Mattarneh, H.M.A., Zain, M.F.M. (2013). Concrete dielectric properties investigation using microwave nondestructive techniques. Material and Structures, 46, 77

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Investigation of dielectric properties of heterostructures based on ZnO structures

.P., Dielectric Behaviour and Structure, McGraw-Hill, New York, 1995. [26] POPESCU M., BUNGET I., Physics of Solid Dielectrics, Elsevier, Amsterdam, 1984. [27] KWA K.S., CHATTOPADHYAY S., JANCOVIC N.D., OLSEN S.H., DRISCOLL L.S., O’NIELL A.G., Semicond. Sci. Tech., 18 (2003), 82. [28] FAIVRE A., NIQUET G., MAGLIONE M., FORNAZERO J., LAI J.F., DAVID L., Eur. Phys. J. B, 10 (1999), 277. [29] PISSIS P., KIRITSIS A., Solid State Ionics, 97 (1997), 105. [30] MIGAHED M.D., ISHRA M., FAHMY T., BARAKAT A

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The effect of processing conditions on the phase, microstructure and dielectric properties of SrCa4Nb4TiO17 and Ca5Nb4TiO17 microwave ceramics

.T., Dielectric Materials for Wireless Communication, Elsevier LTD, 2008. [6] Jawahar I.N. Santha N. Sebastian M.T., Mohanan P., J. Mater. Res., 17 (2002), 3084. [7] Fei Z. Zhenxing Y. Zhilun G., Longtu L., J. Am. Ceram. Soc., 89(11) (2006), 3421. [8] Chen Y.C., Tsai J.M., JPN. J. APPL. PHYS., 47 (2008), 7959. [9] Chen Y.C., Yao S.L., Chen R.J., K

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Dielectric, etching and Z-scan studies of glycine doped potassium thiourea chloride crystal

. It is evident that doping of glycine has a positive impact on characteristic features of BTCF, BTCC, ZTS, ZTC and BTCA crystals [ 5 – 9 ]. Potassium thiourea chloride (PTC) crystal is a promising NLO material having a tetragonal structure, good optical transparency, moderate hardness and high thermal stability [4] . It is noteworthy that till date no doping attempt has been made in case of PTC crystal as well as no investigations were accomplished to study the dielectric, third order nonlinear optical (TONLO) and surface characteristics of PTC crystal doped by an

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Method of Measurement of Capacitance and Dielectric Loss Factor Using Artificial Neural Networks

., Sankaran, P., Sudhakar Rao, K. (2003). Measurement of C and tan δ of a capacitor employing PSDs and dual slope DVMs. IEEE Transactions on Instrumentation & Measurement , 52, (5), 1588-1592. [10] Cichy, A. (2013). Non-bridge circuit with double quasi-balancing for measurement of dielectric loss factor. IET Science Measurement & Tech nology, 7 (5), 274-279. [11] Roj, J. (2013). Neural approximation of empirical functions. Acta Physica Polonica A , 124 (3), 554-557. [12] Hornik, K., Stinchcombe, M., White, H. (1989). Multilayer feedforward networks are

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Dielectric and Raman studies of Ba0.06(Na1/2Bi1/2)0.94TiO3–NaNbO3 ceramics

outer shell. Fortunately, bismuth (Bi) has high polarizability (>5 Å 3 ) [ 9 ]. Also, it is non-toxic and has no harmful effect on environment. Hence, Bi-based compounds seem to be the most likely replacement to the lead-based materials [ 6 , 10 ]. It is observed that among the Bi-based systems, (1 – x)(Bi 1/2 Na 1/2 )TiO 3 –xBaTiO 3 is considered to be one of the potential lead-free candidates for dielectric and/or piezoelectric applications. It exhibits a rhombohedral-tetragonal morphotropic phase boundary (MPB) around 0.06 ⩽ x ⩽ 0.08 with remarkable piezoelectric

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