Browsing 2009 by Author "Sebastian, M T"

Now showing items 1-20 of 20

CeO2–La0.5Sr0.5CoO3−δ Composites for Giant Permittivity Applications

Anjana, P S; Sumesh, G; Sebastian, M T (IOP Publishing, 2009)

CeO2–La0.5Sr0.5CoO3−δ (LSCO) composites with different LSCO loadings were prepared by the conventional solid-state ceramic route. X-ray diffraction and scanning electron microscopy results show that the composite is a ...
Crystal structure of Sr 0.4 Ce 0.4 TiO 3 ceramics

Ubic, R; Subodh, G; Gout, D; Sebastian, M T; Proffen, T (American Chemical Society, 2009)

A cerium-doped SrTiO3 compound with the composition Sr0.4Ce0.4TiO3 has been produced by conventional solid-state processing. The structure of this compound was analyzed by X-ray, electron,and neutron diffraction. While no ...
Dielectric Response of High Permittivity Polymer Ceramic Composite with Low Loss Tangent

Subodh, G; Deepu, V; Mohanan, P; Sebastian, M T (AIP Publishing, 2009)

The present communication investigates the dielectric response of the Sr9Ce2Ti12O36Sr9Ce2Ti12O36 ceramics loaded high density polyethylene and epoxy resin. Sr9Ce2Ti12O36Sr9Ce2Ti12O36 ceramic filled polyethylene and epoxy ...
Effect of conductivity of filler on the percolation threshold of composites

Deepa, K S; Nisha, S K; Parameswaran, P; Sebastian, M T; Jose James (American Institute of Physics, 2009)

Polytetrafluoroethylene (PTFE)-silver composites were prepared and the influence of conductivity, particle size, and interfacial area of Ag particle on the percolative behavior were investigated. Silver particles of two ...
The effect of dopants on the dielectric properties of Ba(B'Ta-1/2(1/2))O-3 (B'=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Yb, and In) microwave ceramics

Abdul Khalam, L; Anjana, P S; Sebastian, M T (Wiley, 2009)

Low-loss dielectric ceramics based on Ba(B'Ta-1/2(1/2))O-3 (B'=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Yb, and In) complex perovskites have been prepared by the solid-state ceramic route. The dielectric properties (epsilon(r), ...
Effect of Lithium-based Glass Addition on the Microwave Dielectric Properties of Ca[(Li1/3Nb2/3)1−xTix]O3−δ Ceramics for LTCC Applications

Sumesh, G; Sebastian, M T (Elsevier, 2009-04-03)

The Ca[(Li1/3Nb2/3)1−xTix]O3−δ (x = 0.2 and 0.25) (CLNT) ceramics with lithium borosilicate (LBS) and lithium magnesium zinc borosilicate (LMZBS) glasses were prepared by conventional solid state ceramic route. The effect ...
Enhanced permittivity by the adhesion of conducting and low-loss insulating ceramics in polystyrene

Sumesh George; Sebastian, M T (Wiley, 2009)

Ca[(Li(1/3)Nb(2/3))(0.8)Ti(0.2)]O(3-delta) (CLNT)-polystyrene-La(0.5)Sr(0.5)CoO(3-delta) (LSCO) three-phase composites were prepared by a two-step mixing and hot-molding method. The dielectric properties of polystyrene-CLNT ...
Ferroelectric and incipient ferroelectric properties of a novel Sr9-xPbxCe2Ti2O36(x=0-9) ceramic system

Kamba, S; Savinov, M; Laufek, F; Tkac, O; Kadlec, C; Veljko, S; Elizabeth, J J; Subodh, G; Sebastian, M T; Klementova, M; Bovtun, V; Pokorny, J; Goian, V; Petzelt, J (American Chemical Society, 2009)

Sr9-xPbxCe2Ti12O36 system is derived from the perovskite SrTiO3 and its chemical formula can be written as (Sr1-yPby)(0.75)Ce0.167TiO3. We investigated dielectric response of Sr9-xPbxCe2Ti12O36 ceramics (x = 0-9) between ...
High Q microwave dielectric ceramics in (Ni1-x Zn-x)Nb2O6 system

Butee, S; Kulkarni, A; Om Prakash; Aiyar, R P R C; Sumesh George; Sebastian, M T (Wiley, 2009)

(Ni1-xZnx)Nb2O6, 0 <= x <= 1.0, ceramics with >97% density were prepared by a conventional solid-state reaction, followed by sintering at 1200 degrees-1300 degrees C ( depending on the value of x). The XRD patterns of the ...
Linear and nonlinear optical properties of rare earth doped of Ba0.7Sr0.3TiO3 thin films

Reshmi, R; Sreeja, R; Jayaraj, M K; Jose James; Sebastian, M T (Springer, 2009)

Ba0.7Sr0.3TiO3:Eu ferroelectric films were deposited on quartz substrates by pulsed laser deposition. The linear absorption coefficient and the linear refractive index calculated from the transmission spectrum at 532 nm ...
Low loss, temperature stable dielectric ceramics in ZnNb2O6-Zn3Nb2O8 system for LTCC applications

Anjana, P S; Jawahar, I N; Sebastian, M T (Springer, 2009)

(1 - x)ZnNb2O6-xZn(3)Nb(2)O(8) mixed phase ceramics have been prepared by conventional solid state ceramic route by both mixing ZnO with Nb2O5 and by ZnNb2O6 with Zn3Nb2O8, respectively. The sintered ceramics have high ...
Low-Temperature sintering and microwave dielectric properties of Li2MgSiO4 ceramics

Sumesh George; Anjana, P S; Deepu, V N; Mohanan, P; Sebastian, M T (Wiley, 2009)

Development of a low-temperature sintered dielectric material derived from Li2MgSiO4 (LMS) for low-temperature cofired ceramic (LTCC) application is discussed in this paper. The LMS ceramics were prepared by the solid-state ...
Microwave dielectric properties and low temperature sintering of Sm2Si2O7 ceramic for substrate applications

Renjini, S N; Sherin Thomas; Sebastian, M T; Kiran, S R; Murthy, V R K (Wiley, 2009)

The Sm2Si2O7 ceramics were synthesized by solid-state ceramic route. The calcination and sintering temperature of Sm2Si2O7 were optimized for the best properties. The crystal structure and microstructure of the ceramic ...
Microwave dielectric properties and low-temperature sintering of cerium oxide for LTCC applications

Anjana, P S; Sebastian, M T (Wiley, 2009)

The effect of glass additives on the microstructure, densification, and microwave dielectric properties of cerium oxide for low-temperature co-fired applications was investigated. Different weight percentages of quenched ...
Microwave dielectric properties of SrRE4Si3O13 (RE5La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, and Y) ceramics

Sherin Thomas; Sebastian, M T (Wiley, 2009)

The apatite type SrRE4Si3O13 (RE=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, and Y) ceramics have been prepared by the conventional solid-state ceramic route. The phase purity and surface morphology of the sintered ceramics ...
Percolation Phenomenon in Barium Samarium Titanate–Silver Composite

Sumesh, G; Santha, N I; Sebastian, M T (Elsevier, 2009-01)

Ba4Sm9.33Ti18O54–Ag (BST–Ag) composites were prepared by a solid-state ceramic route and its dielectric properties were investigated in the vicinity of percolation threshold. The structure and microstructure of the composites ...
Polystyrene/Sr2Ce2Ti5O15 composites with low dielectric loss for microwave substrate applications

Subodh, G; Deepu, V; Mohanan, P; Sebastian, M T (Wiley, 2009)

Sr2Ce2Ti5O15 (Strontium Cerium Titanate or SCT) ceramic was prepared by solid-state route. A composite of polystyrene/Sr2Ce2Ti5O15 was made using melt mixing technique in a Kneading machine. The microstructure of the ...
Preparation, Characterization and Properties of Sm2Si2O7 Loaded Polymer Composites for Microelectronic Applications

Sherin Thomas; Deepu, V; Uma, S; Mohanan, P; Philip, J; Sebastian, M T (Elsevier, 2009-07-15)

The dielectric and thermo - mechanical properties of Sm2Si2O7 filled polyethylene and polystyrene composites for microwave packaging applications are reported in this paper. The composites were synthesized by melt mixing ...
Tape casting and dielectric properties of Zn2Te3O8-based ceramics with an ultra-low sintering temperature

Honkamo, J; Jantunen, H; Subodh, G; Sebastian, M T; Mohanan, P (American Ceramic Society, 2009)

The suitability of dielectric ceramics made of zinc tellurate (Zn2Te3O8) and titanium dioxide (TiO2) with an ultra-low sintering temperature (6501C) for tape casting and thus for the multimodule technique with Al electrodes ...
Three-Phase Polymer–Ceramic–Metal Composite for Embedded Capacitor Applications

Sumesh, G; Sebastian, M T (Elsevier, 2009-06)

This paper addresses the materials and processes for printed wiring board compatible embedded capacitor using ceramic, polymer and metal. The Ca[(Li1/3Nb2/3)0.8Ti0.2]O3−δ (CLNT)–epoxy–silver, three-phase composites were ...

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