Open AccessStudy of thermally assisted magnetic probe recording on perpendicular media
Author(s) -
Zhang Li,
Xiaotao Zu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.4271
Subject(s) - perpendicular , perpendicular recording , materials science , heat assisted magnetic recording , voltage , recording media , biasing , quantum tunnelling , scanning tunneling microscope , pulse (music) , optics , nuclear magnetic resonance , optoelectronics , condensed matter physics , nanotechnology , physics , acoustics , computer science , multimedia , geometry , mathematics , transducer , quantum mechanics
This paper demonstrates a technique on heat-assisted magnetic probe recording. The recording medium is a CoNi/Pt multilayered film, suitable for perpendicular recording. Scanning tunneling microscopy(STM) current was introduced to heat the medium locally. Pulse voltages of 2—9V, 500ns in width and 100ns in risetime were used to write marks. Marking was achieved at bias voltages higher than the threshold value 4V in the shape of circular dots with an average size of 170nm. Below the threshold, no marks were observed. A simple model qualitatively explains the experiment.