Narrow-track ring head for high-frequency magnetic recording

• Published in: Journal of magnetism and magnetic materials Vol. 316; no. 2; pp. 195 - 198
• Main Author: Shiiki, Kazuo
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.2007; Elsevier Science
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electromagnetic calculation; Exact sciences and technology; Magnetic head: High frequency; Magnetic properties and materials; Magnetic recording; Magnetic recording materials; Narrow track; Physics; Studies of specific magnetic materials; Magnetic head: High frequency; 73.50.Mx; Electromagnetic calculation; Narrow track; 85.70.Kh; 75.50. - y; Magnetic recording; Micromagnetism; Electrical conductivity; Field distribution; Magnetic moments; Dynamic properties; Recording material; Electromagnetic properties; 85.70.Kh; 73.50.Mx; 75.50.-y; Magnetic recording; Magnetic head: High frequency; Narrow track; Electromagnetic calculation
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2007.02.066

The dynamic magnetic moment method is employed to determine the field strength distribution of a thin-film ring head for high-frequency magnetic recording. The field is found to be broadly distributed in the track direction. The sharpness of the distribution is improved by adopting an appropriate processing gap and a side-erasing pole. These techniques are thus useful for narrow-track recording. The micromagnetic simulation leads to the fact that the width of the recorded track is affected by the frequency of recording, the core resistivity, and the subsequent transition pattern. These effects should therefore be considered in the design of track density.