Demonstration and characterization of 130 Gb/in2magnetic recording systems
| Autor: | Kroum S. Stoev, M. Lederman, K.T. Kung, Peng Luo, J. Chen, M. Yu, J. N. Zhou, F. Liu, Xiaozhong Dang, Jian-Ping Wang, G. Choe, M. Re, Yingjian Chen |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 93:6552-6554 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.1540138 |
| Popis: | We have successfully demonstrated longitudinal recording at areal density of 130 Gb/in2 at a data rate as high as 170 Mbps (21 MB/s) and at a bit-aspect-ratio (BAR) of 2.9, using merged inductive-write/spin-valve-read heads on low noise thin film disks. The heads were fabricated with the standard photolithography and wafer pole trimming used in our currently available commercial products. The reader is a bottom synthetic spin valve (BSSV) with a 0.09 μm gap, and the writer has a conventionally trimmed pole with 0.09 μm gap. The reader magnetic read width (MRW) was measured at 0.10 μm. At read bias of ∼4 mA we measured reader sensitivity as high as 20 mV/μm. The write head was also optimized for tracks as narrow as 0.14 μm operating at overwrite (OW) of 36 dB and nonlinear transition shift (NLTS) better than −25 dB at 610 kBPI, without precomp. Using conventional media we measured total spectral SNR∼18 dB. The media to electronics noise ratio was 4.8, showing that we are still operating in a media noise li... |
| Databáze: | OpenAIRE |
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