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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Matsunuma, S. Inoue, T. Doi, T. Matsuu, T. Hashimoto, A. Hirata, K.-I. Nakagawa, S. |
| Copyright Year | 1965 |
| Abstract | Playback performances of sputtered perpendicular recording tape media were investigated in comparison with longitudinal media. Perpendicular (Media P, out-of-plane coercivity of 318.3 kA/m) and longitudinal (Media L, inplane coercivity of 279.3 kA/m) recording tape media were deposited by facing targets sputtering from the same target of Co74Pt16Cr10-SiO2 for the recording layer at room temperature. For Media P, a soft magnetic FeCoB(50 nm) layer and a Ru(5 nm) seed layer were formed between the recording layer and an Aramid substrate. On the playback test by a drum tester with a ring writer/GMR reader, the waveform of all-ones signal at 5 kfci indicates that Media P has a dipulse response and the shorter PW50 value than Media L. Measured values of D50 were 233 kfci for Media P and 216 kfci for Media L, respectively. Saturation curves show that Media P has good writability. The signal-to-noise ratio (SNR) value of Media P is higher by 2.4 dB at 337 kfci than Media L. These high-resolution and high SNR properties indicate that sputtered perpendicular tape media are suitable for extremely high-density recording. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3598 |
| Ending Page | 3600 |
| Page Count | 3 |
| File Size | 89055 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 45 |
| Issue Number | 10 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Perpendicular magnetic recording Coercive force Magnetic recording Testing Sputtering Chromium Temperature Saturation magnetization Soft magnetic materials Signal to noise ratio sputtered tape media Facing targets sputtering magnetic tape recording playback performance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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