TY - JOUR T1 - Influence of initial particle size on the magnetostriction of sintered cobalt ferrite derived from nanocrystalline powders JF - Journal of Magnetism and Magnetic Materials Y1 - 2013 A1 - Mohaideen, Kamal Khaja A1 - Joy, Pattayil Alias KW - Cobalt ferrite KW - magnetic properties KW - Magnetostriction KW - Microstructure KW - Nanocrystalline KW - Particle size AB -

The role of initial particle size on the magnetostriction coefficient of sintered cobalt ferrite derived from nanocrystalline powders is studied. Nanoparticles of cobalt ferrite with different sizes in the range 3-80 nm are synthesized by an autocombustion method using metal nitrates and glycine. It has been observed that the initial particle size of the starting powders has a strong influence on the magnetostrictive behavior of sintered cobalt ferrite. Highest magnetostrictive strain and strain derivative are obtained for sintered ferrite derived from nanoparticles of size < 5 nm. The results show that higher magnetostriction coefficient for sintered cobalt ferrite can be achieved by compacting nanocrystalline particles of very small size. (C) 2013 Elsevier B.V. All rights reserved.

PB - ELSEVIER SCIENCE BV CY - PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS VL - 346 U3 - Foreign U4 - 2.002 ER -