The Development of Perpendicular Magnetic Recording Tape By Roll-to-Roll In-Line Sputtering

Sekiguchi, N.; Aizawa, T.; Terui, Hikaru; Ozaki, Tomoe; Murakami, Hiroyuki; Endo, Tamio; Tachibana, J.; Inoue, Shunsuke

doi:10.1109/tmag.2014.2328432

Cited by 6 publications

(1 citation statement)

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“…The later is largely used in magnetic tape technology for recording, 1-3 prepared by sputtering as part of a multilayer system, where very specific processes are used in order to improve the crystal orientation, the impurities levels and the magnetic properties. 3 Meanwhile, TMR sensors are the new alternative, 1,4 substituting the GMR sensors, 5 for the reading part, thanks to their good sensitivity and high signal output. 6 The presented work makes an approach to the reading techniques instead that recording technique, since the progresses achieved on thin film magnetic tapes open a realm of opportunities for high resolution, high sensitivity sensors as TMR.…”

Section: All Article Content Except Where Otherwise Noted Is Licensmentioning

confidence: 99%

Reading magnetic ink patterns with magnetoresistive sensors

et al. 2018

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Information storage and monitoring relies on sensitive transducers with high robustness and reliability. This paper shows a methodology enabling the qualification of magnetic sensors for magnetic pattern readout, in applications different than hard disk magnetic recording. A magnetic tunnel junction MTJ sensor was incorporated in a reader setup for recognition of the magnetization of patterned arrays made of CoCrPt thin films and magnetic ink. The geometry of the sensor (in particular, the footprint and vertical distance to the media) was evaluated for two sensor configurations. The readout conditions were optimized to cope for variable media field intensity, resulting from CoCrPt film or magnetic ink thickness, with fixed reading distance and dimensions of the pattern. The calibration of the ink magnetic signal could be inferred from the analytical calculations carried out to validate the CoCrPt results.

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Section: All Article Content Except Where Otherwise Noted Is Licensmentioning

confidence: 99%