Eur. Phys. J. Appl. Phys. 35, 131-134 (2006)
https://doi.org/10.1051/epjap:2006084

A model for achieving 1 terabit/sq.in. storage density by heat-assisted magnetic probe recording

Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China

Corresponding author: zhangli_cmu2005@yahoo.com.cn

Received: 6 January 2006
Revised: 18 February 2006
Accepted: 21 April 2006
Published online: 13 July 2006

Abstract

A method of heat-assisted magnetic recording (HAMR) is characterized. The recording medium is a high coercitivity, granular and perpendicular CoNi/Pt multilayered film. Emission current from a scanning tunneling microscope (STM) is the heating source. Experiments show that an average mark size of 90–120 nm is achieved. A model for achieving 1 terabit/sq.in. recording density (or a mark size of 25 nm) is proposed to guide future effort.