Title: Fabrication, structure and magnetic properties of nanocrystalline NiZn-ferrite by high-energy milling

Author(s): Yu LM, Zhang JC, Liu YS, Jing C, Cao SX

Source: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 288: 54-59 MAR 2005

Document Type: Article

Language: English

Abstract: Nanocrystalline NiZn-ferrite was fabricated by a high-energy milling method with Fe3O4 + NiO + ZnO. The structure and magnetic properties of the milled powder were measured and analyzed. The results show that the grain possesses a single-phase NiZn-ferrite structure in a typical size of 10-50 tim. The magnetic measurement gives a typical value of the saturation magnetization of 45emu/g and a coercivity of 367 Oe. Superparamagnetic behavior is not observed. The experiment reveals that a purer NiZn-ferrite material can be obtained after the milled powder is annealed at relatively low temperature of about 1000 degreesC. The mechanism and efficiency of the synthesis technique are also discussed in this paper. (C) 2004 Elsevier B.V. All rights reserved.

Author Keywords: NiZn-ferrite; Fe3O4; nanocrystalline; high-energy milling

KeyWords Plus: FERROMAGNETS; PARTICLES

Addresses: Zhang JC (reprint author), Shanghai Univ, Dept Phys, 99 Shangda Rd, Shanghai, 200435 Peoples R China
Shanghai Univ, Dept Phys, Shanghai, 200435 Peoples R China

E-mail Addresses: zjincang@online.sh.cn

Publisher: ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

Subject Category: MATERIALS SCIENCE, MULTIDISCIPLINARY; PHYSICS, CONDENSED MATTER

IDS Number: 904FF