Lee, JG Lee, HM Kim, CS Oh, YJ 2024-01-21T17:41:08Z 2024-01-21T17:41:08Z 2021-09-05 1998-01 0304-8853 https://pubs.kist.re.kr/handle/201004/143422 Ultra-fine CoFe2O4 particles and thin films were fabricated by a sol-gel method and their magnetic and structural properties were investigated. Co-ferrite powders fired at and above 450 degrees C had only a single phase spinel structure and became ferrimagnetic. Powders annealed at 200 degrees C and 350 degrees C had a typical spinel structure, however, they showed a transition from the paramagnetic to ferrimagnetic state as the measuring temperature decreased from the room to liquid nitrogen temperature. Co-ferrite films annealed at 650 degrees C had a single phase spinel structure without any preferred crystallite orientation and the in-plane and perpendicular coercivity. The maximum value of the coercivity was 2550 Oe for the thin film fired at 850 degrees C. (C) 1998 Elsevier Science B.V. All rights reserved. English ELSEVIER SCIENCE BV DEPOSITION Magnetic properties of CoFe2O4 powders and thin films grown by a sol-gel method Article 10.1016/S0304-8853(97)00925-6 1 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.177, pp.900 - 902 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 177 900 902 scie scopus 000072262200063 2-s2.0-0031682038 Materials Science, Multidisciplinary Physics, Condensed Matter Materials Science Physics Article; Proceedings Paper DEPOSITION fine particles ferrite thin film sol-gel method