Initially, magnetic tape for data storage was wound on large (10.5 in/26.67 cm) reels. This defacto standard for large computer systems persisted through the late 1980s. Tape cartridges and cassettes were available as early as the mid 1970s and were frequently used with small computer systems. With the introduction of the IBM 3480 cartridge in 1984, large computer systems started to move away f...

A Superconducting Magnetic Energy Storage (SMES) system stores energy in a superconducting coil in the form of a magnetic field. The magnetic field is created with the flow of a direct current (DC) through the coil. To maintain the system charged, the coil must be cooled adequately (to a “cryogenic” temperature) so as to manifest its superconducting properties – no resistance to the flow of cur...

magnetic lignocellulosic fibers have good potential in applications such as information storage, security papers, electromagnetic shielding and etc. in this study unbleached bagasse fibers were used to fabricate magnetic paper by chemical co-precipitation method. lumen loading and precipitation of magnetic nanoparticles on the surface of fibers were carried out by in situ synthesis. then the fo...

Since delivery of thefirst vacuum-column magnetic-tape transport in 1953 and thefirst movable-head disk drive in 1957, tape and disk devices in many configurations have been the principal means for storage of the large volumes of data required by data processing systems. Magnetic drums and other device geometries have also been important system components, but to a lesser extent. Over the past ...

Operating points to achieve Terabyte tape cartridge capacities and beyond drive both linear and track densities to values not perceived possible a few short years ago. The primary contributors to the issues related to these high capacities are the physical and magnetic properties of the tape media itself. The total magnetic moment of the recorded bit, driven by the magnetic coating thickness, d...

The magnetic hard disc drive industry continues to face serious challenges in its quest for ever decreasing bit size. This review summarizes recent advances and promising new technology which have foundations in fundamental physical principles. Some advantages of these new ideas are illustrated through micromagnetic modeling and the numerous challenges associated with their implementation are h...

Magnetic recording currently is the major data storage technology. Conventional magnetic media implement continuous magnetic layers consisting of microscopic grains. Such media have constraints of thermal instability due to the superparamagnetic effect, which occurs when the magnetic grains become too small. The superparamagnetic effect may set the fundamental limit of about 0.5Tbit/inon achiev...