Sijo A. K.

5 Questions 8 Answers 0 Followers

Questions related from Sijo A. K.

Why isn't the existence of larger ferrimagnetic particles reflected on the Mössbauer spectrum on the form of sextets?

I got the hysteresis loop with a small area along with doublets in the RT-Mössbauer spectrum. Doublets indicates presence of small superparamagnetic particles. But it is not expected loop in...

08 August 2019 4,699 4 View

Why the dielectric constant of the ferrites doped with chromium decreases with increase in the annealing temperature?

Cr doped ferrite prepared by self combustion Annealed as prepared sample at 1000 K and 1200 K for 24 hours separately Dielectric constant of 1000 K annealed sample found to be greater than that of...

02 February 2015 5,016 4 View

Why does saturation magnetization of ferrites increase when annealing at 1200 K?

synthesized by self combustion annealed 24 hours at 1200 K nearly three times increases from 5 emu/g to 15 emu/g

01 January 2015 7,077 3 View

Why coersivity of ferrites decreases nearly 1/20 times on annealing at 1200K?

I annealed Cr-ferrites at 1200K for 24 hours, coercivity decreased to 30 G from 600 G.

01 January 2015 6,727 3 View

ZFC curve of CoCrFeO4 annealed at 1200K sample shows a negative magnetization at low temperature below 130 K which is also observed in CoCr2O4, Why?

annealed (24 hours) CoCrFeO4 and CoCr2O4 prepared by self combustion.

01 January 2015 5,541 7 View