Size-dependent magnetic properties of nanocrystalline yttrium iron garnet powders
| Title | Size-dependent magnetic properties of nanocrystalline yttrium iron garnet powders |
| Publication Type | Journal Article |
| Year of Publication | 2006 |
| Authors | Rajendran, M, Deka, S, Joy, PAlias, Bhattacharya, AK |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 301 |
| Issue | 1 |
| Pagination | 212-219 |
| Date Published | JUN |
| Type of Article | Article |
| ISSN | 0304-8853 |
| Keywords | anisotropy constant, Magnetism, Nanoparticles, Superparamagnetism, YIG |
| Abstract | Yttrium iron garnet (YIG) powders with particle sizes of 9, 14, 25 and 60 nm have been synthesised and their magnetic properties have been studied as a function of particle size and temperature. The particles with sizes of 9 and 14 nm exhibited superparamagnetism. The blocking temperature (T-B) decreased with decreasing particle size, whereas the anisotropy constant (K) increased. The saturation magnetisation (M-s) decreased with decreasing particle size. These variations are attributed to large surface-to-volume ratios in nanoparticles where the surface moments are predominant. (c) 2005 Published by Elsevier B.V. |
| DOI | 10.1016/j.jmmm.2005.06.027 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 2.357 |
Divison category:
Physical and Materials Chemistry