Kunal B Modi, Pooja Y Raval, Suraj J Shah, Chetan R Kathad, Sonal V Dulera, Mansi V Popat, Kiritsinh B Zankat, Kiran G Saija, Tushar K Pathak, Nimish H Vasoya, Vinay K Lakhani, Usha Chandra, Prafulla K Jha
Four spinel ferrite compositions of the CuAl(x)Fe(2-x)O4, x = 0.0, 0.2, 0.4, 0.6, system prepared by usual double-sintering ceramic route and quenched (rapid thermal cooling) from final sintering temperature (1373 K) to liquid nitrogen temperature (80 K) were investigated by employing X-ray powder diffractometry, (57)Fe Mossbauer spectroscopy, and micro-Raman spectroscopy at 300 K. The Raman spectra collected in the wavenumber range of 100-1000 cm(-1) were analyzed in a systematic manner and showed five predicted modes for the spinel structure and splitting of A1g Raman mode into two/three energy values, attributed to peaks belonging to each ion (Cu(2+), Fe(3+), and Al(3+)) in the tetrahedral positions...
February 16, 2015: Inorganic Chemistry