Processing YCo5 Permanent Magnetic Submicron Flakes by Surfactant-Assisted High-Energy Ball Milling

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（5）
• 页码范围: 213-216
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/5/057501

摘要

YCo5 alloy is processed by surfactant-assisted high-energy ball milling. Oleic acid is used as the surfactant and is 20％ of the starting powder.The resultant particles are flakes of several microns in length and width,and 20-200nm in thickness. The flakes have significant crystallographic anisotropy and the c-axis (also easy magnetization axes) is perpendicular to the flake's surface. Maximum coercivity of 192kA/m is obtained in the sample milled for 100 min.Excess milling results in the appearance of Fe and deteriorates the permanent magnetic properties seriously.