A hybrid recording scheme for high-areal-density information storage (abstract)

Abstract

A novel recording scheme which combines optical-recording track widths with magnetic-recording linear transition densities is conceptually described. The system uses a magnetic transducer to both record and read information, but track width definition and track following are accomplished with a focussed laser beam, as in optical recording. Area recording densities of (1–3)×108 bits/cm2 appear possible. Several possible implementations of the method are presented and their advantages and disadvantages are discussed.

Thermal effect on recording quality in heat-assisted recording

“…It is true that media with higher coercivity may push this limitation a little further; however, as the material's coercivity reaches certain value, another problem has to be tackled: the stateof-art writing technology, even in the predictable future, cannot provide sufficient magnetic field to squeeze user data into such media. As a promising approach to overcome this problem, heat-assisted recording was proposed [1] and has attracted more efforts on such researches [2][3][4][5][6][7][8][9][10][11][12]. Besides the writing strategy and writing head researches, the studies on thermal effects of the magnetic media and recording performance are also badly desired to build a pragmatic system.…”