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Title: Preparation and magnetic properties of (Zn-Sn) substituted barium hexaferrite nanoparticles for magnetic recording
Authors: Fang, H.C.
Yang, Z.
Ong, C.K. 
Li, Y. 
Wang, C.S.
Keywords: Approach to saturation law
Magnetic recording
Substituted barium ferrite
Issue Date: 4-Aug-1998
Citation: Fang, H.C.,Yang, Z.,Ong, C.K.,Li, Y.,Wang, C.S. (1998-08-04). Preparation and magnetic properties of (Zn-Sn) substituted barium hexaferrite nanoparticles for magnetic recording. Journal of Magnetism and Magnetic Materials 187 (1) : 129-135. ScholarBank@NUS Repository.
Abstract: Zn-Sn substituted barium ferrite particles BaFe12-2xZnxSnxO19 with O ≤ x ≤ 1.1 have been prepared by a chemical co-precipitation method for the first time. X-ray diffraction (XRD) and transition electron microscopy (TEM) have been carried out to determine the particle structure and morphology. Magnetic properties have been measured using a vibrating sample magnetometer (VSM) with an applied field up to 80 kOe. The specific saturation magnetization Ms was determined using the law of approach to saturation, and the effective anisotropy field Ha and anisotropy constant K1 were also estimated. It was found that the particle size could be effectively decreased and coercivity Hc easily controlled, by varying x without significantly decreasing saturation magnetization. In particular, BaFe12-2xZnxSnxO19 with x = 0.7-1.1 has suitable magnetic characteristics and a particle size small enough for high-density magnetic recording. © 1998 Elsevier Science B.V. All rights reserved.
Source Title: Journal of Magnetism and Magnetic Materials
ISSN: 03048853
Appears in Collections:Staff Publications

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