2002/10/30 by R. N. Bhowmik, R. Nagarajan, Bhowmik, R. N. +3
Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Soft Condensed Matter (cond-mat.soft) #cond-mat.dis-nn #cond-mat.mtrl-sci #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.cond-mat/0210678
13 pages,7 figures
arxiv created 2002/10/30 · arxiv updated 2009/11/30
We report the particle size dependent magnetic behaviour in the antiferromagnetic spinel CoRh2O4. The nanoparticles were obtained by mechanical milling of bulk material, prepared under sintering method. The XRD spectra show that the samples are retaining the spinel structure. The particle size decreases from 70 nm to 16 nm as the milling time increases from 12 hours to 60 hours. The magnetic measurements suggest that the antiferromagnetic ordering at TN ≈ 27K exists in bulk as well as in nanoparticle samples. However, the magnitude of the magnetization below TN increases with decreasing particle size.