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Questions related from Burhan Ullah
In the temperature dependent Ac conductivity, what is basic different in uncertainty and no uncertainty data region. What phenomena is there? Please See the attached file?
11 November 2016 7,963 1 View
I sintered my sample at 1300 °C in air. Now I want to anneal the sample. Can someone give me some basic step required for annealing process?
11 November 2016 8,693 2 View
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07 July 2016 5,347 0 View
It is possible to find polar nanoregions (PNRs) using powder sample for TEM analysis. Can someone share , some useful documents and/or papers related with the TEM view of polar nanoregions (PNRs).
06 June 2016 5,223 2 View
In case of Ti based ceramics, how the existence of superstructure reflection like antiphase title reflection and antiparallel displacement of the A-site cations influenced (degrade and/or enhance)...
05 May 2016 7,426 1 View
How the factors like doping level, vacancy defects, structure transition, particle size, pressure, orbital ordering and composition effected and/or shifted the curie temperature . please suggest...
03 March 2016 7,929 1 View
In our society, as we see different factors play a key rule while publish a paper? However, what is the key rule of favoritism/nepotism on this aspect? How we can minimize this specially from our...
02 February 2016 9,110 3 View
Please see attach file for detail.
12 December 2015 7,897 6 View
In the Raman spectra of doped SrTiO3, a strong peak appears at 151.24cm-1 who intensity increased with doping. However, there is no such peak for pure SrTiO3 ceramics. The peak slightly shifted...
11 November 2015 8,041 1 View
I am tried to find the average grain size from the SEM image. Can any body suggested me, that which software is better to calculate the grain size like Image Pro plus software and/or Nano...
09 September 2015 1,401 0 View
Can any body know, how we can find the angle of tilt of the octahedra from the atomic co-ordinates? How we can know about the short and long range cation/vacancy ordering from XRD spectrum? How...
09 September 2015 1,024 2 View
The TEM analysis of sample is better in pallets or powder form? In both case the final result will be the same?
09 September 2015 9,649 0 View
For A-site doping the dielectric constant of SrTiO3 ceramics decreases with cerium doping. Can any body known the decrease in the dielectric constant in term of Hardening and softening of soft...
08 August 2015 5,130 3 View
can any body told me that why the dielectric constant increase with increasing and decreasing of temperature.
07 July 2015 783 9 View
i want to know,the decrease in the temperature coefficient of resonance frequency (TCF ) with cerium addition in term of bond length. please can any body know that, how to calculate the bond...
07 July 2015 9,831 3 View
can any body know why the dielectric constant of SrTiO3 ceramics decrease with doping concentration like CeO2?
05 May 2015 6,530 3 View
Can any body told me that why the dielectric constant decrease linearly while quality factor increase linearly with doping concentration ?
05 May 2015 3,414 3 View
I am working on cerium doped SrTiO3 system. But the problem which I facing is the formation of major second phase CeO2. How can I control this problem? Although I calcined and sinter the system in...
03 March 2015 4,836 3 View
