Title of article
The Effect of Doping by Sr on the Structural,Mechanical and Electrical Characterization of La1Ba1-xSrx Ca2Cu4O8.5+δ
Author/Authors
jasim, kareem a. university of baghdad - college of education for pure science (ibn -al-haitham) - department of physics, Iraq , thejeel, mohammed a.n. university of baghdad - college of education for pure science (ibn -al-haitham) - department of physics, Iraq , al-khafaji, raghad subhi university of baghdad - college of education for pure science (ibn -al-haitham) - department of physics, Iraq
Pages
6
From page
170
To page
175
Abstract
The Sr doped La1Ba1-xSrx Ca2Cu4O8.5+δ samples with 0 ≤ x ≤ 0.3 had been prepared
using the solid state reaction. The samples were claimed at 800°C for 3hr, palletized and
sintered at 860°C for 20hr in air . Dielectric constant and loss by means of capacitance have
been investigated with frequencies in the range of 1kHZ to 1MHZ for our samples at room
temperature. Also, Shore hardness has been measured. The dielectric constant and loss
decrease slightly with the increase of frequency for all compounds. Additionally, the partial
substitution of Sr+2 into Ba+2 sites never have effect on the dielectric properties. X-ray
diffraction (XRD) analysis showed a tetragonal structure and the as grown La1Ba1-xSrx
Ca2Cu4O8.5+δ correspond to the 1124 phase. It was found that the change of the Sr
concentrations of all our samples produces a change in a, c and c/a parameters.
Keywords
Shore hardness , dielectric properties , La1Ba1-xSrx Ca2Cu4O8.5+δ
Journal title
Ibn Alhaitham Journal For Pure and Applied Science
Serial Year
2014
Journal title
Ibn Alhaitham Journal For Pure and Applied Science
Record number
2602263
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