Nanocrystalline HoCrO4: facile synthesis and magnetic properties.
Nanocrystalline HoCrO4 powder was synthesized by a combustion technique using glycine and citric acid as the fuels in different oxidant-to-fuel ratios. Fuel-deficient glycine-nitrate combustion reaction resulted in zircon type HoCrO4 free from HoCrO3 phase. The crystallite size for the phase pure product after calcination at 575 degrees C in oxygen atmosphere was found to be 34 nm by X-ray line broadening. The TEM observations showed highly porous structure. Magnetic measurements reveal the ferromagnetic nature of HoCrO4 nano particles with Tc = 18 K. The compound shows high remanence of 30.4 emu x g(-1) and low coercivity of -0.0343 T.
Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
R
R
Shukla
Vinila
V
Bedekar
S M
SM
Yusuf
P
P
Srinivasu
A
A
Vinu
A K
AK
Tyagi