By a News Reporter-Staff News Editor at Journal of Technology -- New research on Ceramics is the subject of a report. According to news reporting from Andhra Pradesh, India, by VerticalNews journalists, research stated, "The Cr3+ ions doped multi-oxide ZnFe2-xCrxO4 ferrite nanoparticles have been synthesized by chemical co-precipitation method. Site occupancies of Zn2+, Cr3+ and Fe3+ ions were analyzed using X-ray diffraction data and Buerger's method."
The news correspondents obtained a quote from the research from Osmania University, "The effect of the constituent phase variation on the magnetic hysteresis behavior was examined by saturation magnetization which decreases with the increase in Cr3+ content in place of Fe3+ ions at octahedral B-site. Typical blocking temperature (TB) around 90 K was observed by zero field cooling and field cooling magnetization study. Room temperature Mossbauer spectra show two paramagnetic doublets (tetrahedral and octahedral sites). The isomer shifts of both doublets decrease whereas quadrupole splitting and relative area of tetrahedral A-site increases with increasing Cr3+ substitution. The dielectric constant (measured on compositions x=0, 0.4, 0.8 and 1.0) increases when the temperature increases as in the semiconductor."
According to the news reporters, the research concluded: "This behavior is attributed to the hopping of electrons between Fe2+ and Fe3+ ions with a thermal activation."
For more information on this research see: Structural development and magnetic phenomenon in Zn-Cr-Fe multi oxide nano-crystals. Ceramics International, 2014;40(6):8357-8368. Ceramics International can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Ceramics International - www.elsevier.com/wps/product/cws_home/405926)
Our news journalists report that additional information may be obtained by contacting M. Hashima, Osmania Univ, Dept. of Phys, Nizam College, Hyderabad 500001, Andhra Pradesh, India. Additional authors for this research include S.E. Shirsath, S.S. Meena, P. Bhatt, R.K. Kotnala, S. Kumar, R. Kumar, D. Ravinder and Alimuddin.
Keywords for this news article include: Asia, India, Ceramics, Andhra Pradesh
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC