Magnetic tape recording technology and devices

Tailoring the Structural, Magnetic, Mechanical, and Thermal Properties of CoFe2O4 by Varying Annealing Temperature for High-Density Storage Devices

“…The consequence of both methods causes the inability to push apart the magnetic regions. 4 The recording performance would be compromised if H C is increased beyond 3500 Oe. The thickness can be reduced by reducing the particle size to nanoscale, to achieve layering thickness very less than 100 nm.…”

Comparison of MR and GMR spin-valve heads for magnetic recording on MP tape

“…To better understand the shape of the SV data and to compare it to a similarly designed SAL MR type, the head and media parameters were applied to a normal recording model that takes into account the wavelength response of recording on particulate media. The equation used is taken from [5] and is (1) where is the wavenumber and contains the MR/GMR ratio, resistance, bias/sense current, and sensitivity. The only adjustable parameter for fitting the shape is the head to medium spacing term containing , where is the effective read loss due to spacing on write and the spacing on read.…”

“…This is predominantly because the media properties and areal densities used to date are considerably different than in disk applications. It has been pointed out in the past how the media dominates the recording process [1] and in tape, the magnetic thickness and relatively large product, where is the remanent moment and the thickness, dictates the magnetic recording. Work on applying the SV to tape applications has been reported [2] and designs often centered around reliability issues [1], [3].…”

“…It has been pointed out in the past how the media dominates the recording process [1] and in tape, the magnetic thickness and relatively large product, where is the remanent moment and the thickness, dictates the magnetic recording. Work on applying the SV to tape applications has been reported [2] and designs often centered around reliability issues [1], [3]. Also, great advances in areal density using SVs have been reported using metal evaporated tape and helical scan recording in [4].…”

“…Also, great advances in areal density using SVs have been reported using metal evaporated tape and helical scan recording in [4]. It has been suggested that the SV may be required in tape systems at much lower areal densities than its introduction in disk drives due to the relatively noisy multichannel read-while-write mode of operation in linear tape [1]. The direct write-to-read feedthrough that results can be countered by increasing the raw signal amplitude that can be realized by using a SV rather than a conventional magnetoresistive (MR) element.…”