Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.62.6530
Title: Site preference and magnetic properties for a perpendicular recording material: BaFe12-xZnx/2Zrx/2O19 nanoparticles
Authors: Li, Z.W. 
Ong, C.K. 
Yang, Z.
Wei, F.L.
Zhou, X.Z.
Zhao, J.H.
Morrish, A.H.
Issue Date: 1-Sep-2000
Citation: Li, Z.W.,Ong, C.K.,Yang, Z.,Wei, F.L.,Zhou, X.Z.,Zhao, J.H.,Morrish, A.H. (2000-09-01). Site preference and magnetic properties for a perpendicular recording material: BaFe12-xZnx/2Zrx/2O19 nanoparticles. Physical Review B - Condensed Matter and Materials Physics 62 (10) : 6530-6537. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.62.6530
Abstract: The site preference and magnetic properties of Zn-Zr substituted BaM ferrite BaFe12-xZnx/2Zrx/2O19 nano-particles with x = 0-1.6 have been studied using Mössbauer spectra and magnetic measurement. The results show that the magnetizations and magnetocrystalline anisotropies are closely related to the distributions of Zn-Zr ions on the five sites. The BaFe12-xZnx/2Zrx/2O19 nanoparticles exhibit unusual saturation magnetization, which increase at low substitutions, reach a maximum and then decrease. Mössbauer spectra show that the Zn-Zr ions preferentially occupy the 2b and 4fVI sites. The preference for the 4fVI site is responsible for the anomalous increase in the magnetization at low Zn-Zr substitutions. At x≥1.2 the rapid decrease in the magnetizations is mainly attributed to a noncollinear magnetic structure. In addition, a monotonic decrease in the magnetocrystalline anisotropy with Zn-Zr substitutions has its origin in the preference of the Zn-Zr ions for the 2b and 4fVI sites.
Source Title: Physical Review B - Condensed Matter and Materials Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/97941
ISSN: 01631829
DOI: 10.1103/PhysRevB.62.6530
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