Rajagopalan Pandey

8 Questions 11 Answers 0 Followers

Questions related from Rajagopalan Pandey

How to calculate the carrier concentration for semiconductor (bulk, powder) if the resistance is very high like Mega ohm?

how to calculate the carrier concentration for semiconductor (bulk, powder) if the resistance is very high like Mega ohm? I think Hall measurement and seaback coefficient measurement wont work in...

04 April 2019 1,837 4 View

What is the reason of La2O3 being a p-type matarial?

it has been reported in several literature. however I couldn't find the real reason behind it.

10 October 2018 6,109 3 View

Under which conditions poling depletes the performance of Piezoelectric material?

i have poled the ZnO sample ranging from 1kV to 10 kV. however, my piezoelectric performance decreased in all the cases. any reference where poling have reduced the performance are highly anticipated

05 May 2018 7,062 3 View

If I grind micro sized two oxides together what properties are responsible for clinging of the particles to each other?

IF I GRIND MICRO SIZED TWO OXIDES TOGETHER IN PESTLE USING MORTAR WHAT PROPERTIES ARE RESPONSIBLE FOR CLINGING OF THE PARTICLES TO EACH OTHER? ANY PAPERS/REFERENCE IN THIS DIRECTION ARE HIGHLY...

12 December 2017 2,937 1 View

Can somebody thorow some light on this configuration of PE loop??

Graph (a) is intrinsic ZnO. Graph (b) is Doped ZnO in 1% graph (c) is doped ZnO 2.5% graph (d) is doped ZNO 5%. intrinsic shows pure resistive behavior however after doping Resistive changes to...

11 November 2017 9,753 13 View

The mixture was precipitated in methanol to get powder? what does it mean

I am not from chemistry background. Does it mean it was filtered by Methanol using a simple filter paper and pouring down methanol and then collecting the filterate!!! please give your suggestions

06 June 2017 840 5 View

Dear all, I am trying to find the generation of stresses when a curled like an Arched shaped thin sheet is subjected to a pressure vertically downward

Flettening of pre strained film using COMSOL the image is attached for reference which shows the deformed state of the film. The geometry was imported from CAD file. I am using boundary load, and...

04 April 2016 1,400 1 View

If I add a built-in material to COMSOL, it asks me to input the elasticity matrix, coupling matrix and relative permittivity? Where can I get it?

Simple materials like Aluminium, steel, air etc. the software asks me to input the above details? What could be the problem as some videos show that for built in materials you need not enter any data?

02 February 2015 1,770 5 View