Preparation and Characterization of SrO-Al2O3-Fe2O3-B2O3 System Nano-Ferrimagnetic Glass-Ceramics

Jian An Liu; Mei Mei Zhang; Xue Na Yang; Shu Jiang Liu

doi:10.4028/www.scientific.net/AMR.415-417.384

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 415-417Preparation and Characterization of...

Preparation and Characterization of SrO-Al₂O₃-Fe₂O₃-B₂O₃ System Nano-Ferrimagnetic Glass-Ceramics

Abstract:

Based on the SrO-Al₂O₃-Fe₂O₃-B₂O₃ system, the nano-ferrimagnetic glass ceramics has been prepared through heat treating the melted glass. Using the aqueous solution solvent evaporation and melt method, we firstly obtained the molecular-scale homogenously mixed compound. And thus the glass specimen was produced by naturally cooling the batch melts. The crystallization of the glass systems with diffirent component has been systematically investigated by using X-ray diffraction (XRD), Thermo gravimetric (TG), Differential Thermal Analysis (DTA) as well as Vibrating Sample Magnetometer (VSM). It is found that Fe₃O₄ crystal precipitated during naturally cooling the melt from 1500°C to anneal temperature. Moreover, the nano-ferromagnetic glass ceramics with the main crystal phase of SrFe₁₂O₁₉ was obtained after heat-treated at 865°C for 2 hours. The size of crystal was 20-50nm. The magnetic properties of the obtained ferromagnetic glass ceramics indicated that the saturation magnetization and the intrinsic coercivity were 32A•m²/kg and 236KA/m, respectively.

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Periodical:

Advanced Materials Research (Volumes 415-417)

Pages:

384-389

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.415-417.384

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Online since:

December 2011

Authors:

Jian An Liu, Mei Mei Zhang, Xue Na Yang, Shu Jiang Liu

Keywords:

Aqueous Solution Solvent Evaporation Method, Ferrimagnetic Glass-Ceramics, Heat-Treated, Melt

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