Synthesis of glass ceramics containing finely dispersed particles of aluminum-doped M-type strontium hexaferrite

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• 作者：D. D. Zaitsev ; L. A. Trusov ; P. E. Kazin and Yu. D. Tretyakov
• 关键词：M ; type strontium hexaferrite ; glass ; glass ceramics ; ferrimagnetic ; coercive force ; saturation magnetization
• 刊名：Russian Chemical Bulletin
• 出版年：2005
• 出版时间：January 2005
• 年：2005
• 卷：54
• 期：1
• 页码：75-78
• 全文大小：232 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Chemistry
  Organic Chemistry
  Inorganic Chemistry
  Russian Library of Science
  
• 出版者：Springer New York
• ISSN：1573-9171

文摘

Glasses with nominal compositions SrFe₁₀Al₂O₁₉+4(SrB₂O₄+Sr₂B₂O₅) (1) and SrFe₉Al₃O₁₉+4(SrB₂O₄+Sr₂B₂O₅) (2) were prepared by rapid quenching of melts. Thermal treatment of glass samples at 600–900 °C resulted in crystallization of the magnetic phase SrFe_12−xAl_xO₁₉ (x = 1.1±0.1) and strontium borates. Platelet hexaferrite particles with average sizes from (250×60) nm2 to (450×140) nm2 were prepared. The coercive force of glass ceramics is 580 and 475 kA m−1 for glasses 1 and 2, respectively. The coercive force of 580 kA m−1 is the highest known value compared to hexaferrite particles prepared earlier by glass crystallization.