Bhasker Soni

10 Questions 8 Answers 0 Followers

Questions related from Bhasker Soni

Why is there a blue shift in band gap observed for Gd doped CeO2 system?

Hello, I have synthesized Gd doped CeO2 with Gd concentration of 3, 5, 10, 20%. I have attached the UV-vis absorption spectra for the sample heat treated at 500 C. The average crystallite size is...

27 December 2016 7,038 4 View

Is it possible to get red shift in CeO2 absorption peak with increase in 3+ ion dopant concentration ?

Hello, I have obtained Gd doped CeO2 nanoparticles. With UV spectra I could find increase in direct band gap values from 3.6 eV to 3.8 eV. Howerver, I was expecting band gap to decrease with...

16 October 2016 1,638 3 View

What does the FC-ZFC curve indicates ?

Hello, Please look at the below curve and explain what does the hump in FC-ZFC curve indicates. What if there is no hump in it. Regards,

02 October 2016 226 3 View

Where shall I observe Photoluminescence (PL) peak ?

Hello, If I get UV-vis absorption peat at 340 nm for a semiconductor and if I excite the material with 290 nm wavelength, where shall I expect the PL peak in emission spectrum assuming no other...

13 September 2016 4,469 7 View

How do i find X,Y,Z position of atoms for La0.6Sr0.4Fe0.8Co0.2O3 ?

Hello, I want to obtain X, Y, Z position of atoms for La0.6Sr0.4Fe0.8Co0.2O3 rhombohedral structure. How can I obtain it ? Can anyone help me for it ? I have data for XRD.

05 April 2016 998 3 View

How to make proper surface contact on aluminum metal foam surface for heat exchanger applications ?

Hello, I have rectangular open cell Aluminum metal foam. I want to study its application as an heat exchanger. However, I am unable to make the parallel plate connections on its surface...

26 March 2016 2,777 1 View

What instruemnt shall I use to study the dynamic behavior of metal foam with strain rate of 400 s^-1?

Hello, I am having aluminum foams (length = 35 mm) and want to study its compression behavior under dynamic loading with strain rate of 400 s^-1 . What should be the velocity of the crosshead...

19 January 2016 158 3 View

Why was there decrease in elastic modulus under quasi-static compression of Al foams with increase in relative density?

I have performed quasi-static compression on Al open cell foam for 5 different relative densities. The stress-strain curve indicated decrease of yield strength with increasing relative density...

04 January 2016 2,606 9 View

How can I measure the porosity and density of metal foams ?

Hello, Is there any standard way of measuring the porosity and density of metal foam ?

14 July 2015 5,577 5 View

Can any one tell me what sample size should I use for mechanical properties testing of metal foam?

Hello, Can any one tell me what sample size should I use for mechanical properties testing of metal foam? Some have followed sample size of say width (10 times pore size) while some say the width...

26 June 2015 7,935 2 View