Effect of La<SUP>3+</SUP> Impurity on Magnetic and Electrical Properties of Co–Cu–Cr–Fe Nanoparticles

• DOI: 10.1166/jnn.2015.9591
• Publication Date: 2014-11-19T23:48:18Z
• Authors: Vivek Chaudhari; R. H. Kadam; M. L. Mane; Sagar E. Shirsath; A. B. Kadam; D. R. Mane
• Keywords: 0103 physical sciences; 01 natural sciences

In this work a series of Co0.7Cu0.3Cr0.5La(x)Fe1.5-(x)O4 were synthesized via sol-gel auto-combustion technique through the incorporation La3+ into raw powders. The structural magnetic and resistivity properties Co-Cu-Cr-La ferrites investigated. X-ray diffraction data indicated that, after doping, samples consisted main spinel phase in combination with small amount foreign LaFeO3 phase. addition resulted reduction particle size an increase porosity samples. infrared spectra recorded on range from 300-800 cm(-1). two primary bands corresponding to tetrahedral v1 at 595-605 cm(-1) octahedral v2 389-413 observed. site radii increased rapidly substitution while slowly increased. Deviation ideal oxygen positional parameter is found decrease substitution. saturation magnetization decreased ions doped coercivity shows opposite trend. affects hopping between Fe2+ <-> Fe3+, resistivity.