Thermomagnetic recording in amorphous TbFeCo films on patterned substrates

Abstract

Magnetization reversal and thermomagnetic recording in amorphousTbFeCo films on pattemed glass substrates were studied. Two types of pattems were examined 1x1 pz raised and lowered square patches. Pinning of the domain walls at the side-walls of the patches was observed. Thermomagnetic recording experiments c o n f i i the ability of pattemed substrates to confiine recorded domains witbin boundaries defined by the side-walls.

Magnetoresistance anomaly in DyFeCo thin films

“…Recently, people have even started to study microstructured MO films using the MOKE technique and magnetic-force microscopy. [1][2][3][4][5] However, the information extracted from the electrical measurements on these MO films is always a valuable way of knowing their magnetic properties. Herein, we present a series of magnetoresistance ͑MR͒ and extraordinary Hall-effect ͑EHE͒ measurements on patterned amorphous rare-earth ͑RE͒ transition-metal ͑TM͒ DyFeCo films having different compositions and various linewidths.…”

Oblique sputtering of amorphous TbFeCo thin films on glass substrates and the effect of deposition angle on perpendicular magnetic anisotropy

“…This pinning phenomenon has also been exploited as a possible mechanism for enhancing data storage density in MO recording. 2,3 Further progress in the application of this technique requires a better understanding of the magnetic properties of the films in the side wall region.…”

“…In this article, we concentrate on studying the effect of oblique deposition on the distribution of the magnetic anisotropy axis, which is directly related to the magnetic properties of patterned MO disks. 3 A few articles on this subject have been published previously. Hong et al measured the distribution of easy axes of a dc getter sputtered amorphous Gd-Co film using a torque curve method.…”

Magnetic block array for patterned magnetic media

“…Since this medium was proposed, 1,2 extensive studies have been done focusing mainly on the fabrication and characterization of the dot array. Some have been done on recording or magnetization switching [3][4][5] and reading. 4,6 These media have been fabricated by various lithography methods including electron beam ͑EB͒, 1,2,7 optical interference, [8][9][10][11][12] x ray, 13,14 scanning probe microscope, [15][16][17][18] ion beam modification, 19 and focused ion beam ͑FIB͒ lithography.…”