Kapil Sood

17 Questions 16 Answers 0 Followers

Questions related from Kapil Sood

Can we quantitatively identify level of ordering in a solid amorphous phase to explain its ionic conductivity with temperature?

I have doped Na at Sr site in SrSiO3 using solid state reaction method and found two phases i.e one crystalline phase i.e. SrSiO3 which is insulating and other is Na2Si2O5 which is amorphous and...

06 June 2016 8,426 6 View

Can we quantitatively estimate the volume fraction of crystalline phase (SrSiO3) and glassy phase (Na2Si2O5) by Raman analysis in synthesized sample?

We have synthesized Na doped SrSiO3 using solid state reaction method. Since XRD indicate only crystalline phase and there is possibility of glassy phase (Na2Si2O5) formation along with...

01 January 2015 4,035 5 View

How can I evaluate a Raman mode (386cm-1) for LaInO3 at 386cm-1 is symmetric or antisymmetric stretching vibration?

I have synthesized Ca-doped LaInO3 system. From the Raman analysis, I found the highest intensity peak at 386cm-1 which is due to In-O-In streching mode. How can I know that it is a symmetric or...

12 December 2014 9,517 14 View

Can you suggest the most compatible electrodes (anode +cathode) for LSGM solid electrolyte for SOFC applications?

I am planning to work on compatibility and interaction study on LSGM with different electrode systems. Please suggest the suitable electrode materials and review papers on this.

09 September 2014 290 1 View

How much R-value is acceptable for Rietveld refinement in a polycrystalline solid?

I have synthesized a polycrystalline solid using a solid state reaction method and refined the XRD data using FULLPROOF software.

06 June 2014 7,612 4 View

In XRD, why does the sharpness of (200) and (020) planes in LaGaO3 suddenly diminish with Ca doping?

CaO is doped at La site in LaGaO3 using solid state reaction method. During powder XRD analysis, the undoped sample (LaGaO3) was matched with ICDD card 01-089-7833 and it consist of sharp peaks...

05 May 2014 3,468 8 View

Why is there a difference between the initial value of conductivity in DC measurement and conductivity value during AC measurement?

I am trying to measure DC and AC conductivity of Ca doped LaInO3 samples and wish to separate the electronic from the ionic contribution. I assume that initial value of conductivity in DC...

05 May 2014 5,193 4 View

Does gold sputtering in electrolyte samples (disc-shaped) interfere during AC conductivity measurements?

I used gold sputtering (to make electrode contacts) in Ca doped LaInO3 samples for AC conductivity measurement from room temperature to 800C. Does it interfere with the conductivity response of my...

05 May 2014 2,340 2 View

Why does a Perovskite structure appear on the 180 cm band of Ca doped LaInO3 in raman spectra?

This structure was synthesised by the solid state reaction method.

04 April 2014 6,384 2 View

Why is red shift in raman bands from 180-300cm-1 obtained when Ca is doped in LaInO3 perovskite?

Ca doped LaInO3 samples were synthesized using solid state reaction method. 5mol%Ca shows maximum red shift(3cm-1) for 180cm-1 band. With further doping, lesser red shift is obtained. Also, The...

04 April 2014 9,310 3 View

How does one theoretically calculate the amount of dopant for single phase in perovskites?

I wish to theoretically calculate the amount of dopant that can maintain the solid solubility of perovskite system. AS single phase is necessary for solid electrolyte applications.

01 January 2014 8,040 1 View

What is the difference between grain, particle and crystalline size?

These terms come during SEM and XRD analysis of electroceramics.

12 December 2013 3,795 7 View

How does the FWHM in XRD indicate disordering in polycrystalline powder samples?

Increases in FWHM with doping indicate disordering in ceramic sample. How, and why?

11 November 2013 10,014 6 View

FWHM In PXRD is used to determine disorder as well as stain in polycrystalline solid. How can these effects be separated?

Broadness in XRD peaks were observed with aliovalent metal ion doping in ceramic perovskite solid.

11 November 2013 1,774 1 View

Why do we get depressed semicircle in Nyquist plot for solid electrolyte?

Impedance study of Solid electrolyte Ba doped LaInO3 in air.

10 October 2013 6,184 3 View

Could anyone provide me with an ICDD card number 01-073-6109?

Reference code is 01-073-6109 and chemical formula is Ca ( Ga2 O4 ).

10 October 2013 6,693 2 View

How to measure a high temperature ac conductivity with variable oxygen partial pressure and what accessories are required along with gas cylinder?

We have Solartron 1260 impedance analyzer along with Elite split furnace upto 1200 C and Probstat sample holder. Our pressure variation range is 10E+5 to 10E-15 atm O2 at constant temperature...

08 August 2013 4,051 0 View