Title of article :
This study investigated the effects of glass frits on the sintering and mechanical properties of dental 3Y-TZP ceramics. The glass frits, which consisted of MgO, CaO, Al2O3, SiO2, and P2O5, were selected to lower the sintering temperature of zirconia via
Author/Authors :
S.F. Mansour، نويسنده , , M.A. ElKestawy، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
6
From page :
1175
To page :
1180
Abstract :
A series of nano-sized particles of Mn1−xMgxFe2O4 (x = 0.0, 0.1, 0.2 and 0.25) have been synthesized by co-precipitation method. The effect of Mg-substitution on structural and dielectric properties is reported in this paper. X-ray diffraction analysis for both nanosize and bulk samples revealed the nanocrystalline nature in the prepared ferrite samples. The crystallite size increases from 3–6 nm in nanosamples to 63.9–85.5 nm in bulk samples. The dielectric properties for all the samples have been studied as a function of frequency in the range 10–105 Hz at different temperatures. Dielectric properties such as dielectric constant (ɛ′) dielectric loss (ɛ″), dielectric loss tangent (tan δ) and ac conductivity have been studied for the investigated samples as a function of frequency. The data indicated that, the dielectric constant and the loss factor values of our former are ten orders of magnitude than those of the later. The low dielectric behavior makes ferrite materials useful in high frequency applications.
Keywords :
dielectric constant , AC conductivity , Mg–Mn nanoferrite , Bulk ferrite
Journal title :
Ceramics International
Serial Year :
2011
Journal title :
Ceramics International
Record number :
1273275
Link To Document :
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