Magnetic Properties of Nanocrystalline Barium Hexaferrite Thin Films Prepared by Sol-Gel Method

被引：8

作者：

Salemizadeh, S. ^{[1
]}

Ebrahimi, S. A. Seyyed ^{[1
]}

机构：

[1] Univ Tehran, Ctr Excellent Magnet Mat, Sch Met & Mat, Tehran 111554563, Iran

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 06期

关键词：

Barium hexaferrite; nanocrystalline; sol-gel; thin films; RECORDING MEDIA; BAFE12O19;

D O I：

10.1109/TMAG.2009.2018781

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Single-phase nanocrystalline BaFe12O19 thin films have been prepared on Si (110) substrates by sol-gel method. The efforts have been done to reduce the crystallite size of the single-phase barium hexaferrite thin films in order to develop the thin films for high-density magnetic recording media. Precursor solutions were primed with various Fe/Ba ratios and two kinds of basic agents. Then the coated films were heat treated at different temperatures. The effects of calcination temperature, molar ratio of Fe/Ba, and basic agent on phase composition, crystallites size, morphology, and magnetic properties were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and vibrating sample magnetometery (VSM) techniques. The results showed that the lowest calcination temperature for production of the single-phase barium hexaferrite thin film by sol-gel method was 700 degrees C. This product exhibited a nanostructure with high in-plane coercivity.

引用

页码：2538 / 2540

页数：3

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