Paper Title:
Preparation and Magnetic Properties of Y-Type Ferroxplana by Sol-Gel Method
  Abstract

The preparation and magnetic properties of Y-type ferroxplana were investigated. Y-type ferroxplana of composition Ba2Zn1.2-xCoxCu0.8Fe12O22 was prepared by citrate sol-gel autocombustion process. X varied from 0 to 1.2. Phase formation was characterized by powder X-ray diffraction (XRD). The microstructure was observed via scanning electron microscopy (SEM). The frequency spectra of initial permeability were measured via an impedance analyzer. Results reveal that a well-defined Y-type phase can be formed after the auto-combusted powders were annealed at 900oC. The synthesized nano-sized powder is very active and can be sintered well at 900oC. The sintered samples have fine-grained microstructure. The samples exhibit excellent magnetic properties in hyper-frequency. As zinc content increases, the initial permeability is enhanced and the cut-off frequency decreases.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
477-480
DOI
10.4028/www.scientific.net/KEM.280-283.477
Citation
Y. Bai, J. Zhou, Z. L. Gui, L. T. Li, "Preparation and Magnetic Properties of Y-Type Ferroxplana by Sol-Gel Method", Key Engineering Materials, Vols. 280-283, pp. 477-480, 2005
Online since
February 2007
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$32.00
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