Theory, fabrication and testing of dual track complimentary type of thin-film recording heads for perpendicular magnetic recording system

1996 ◽  
Vol 79 (8) ◽  
pp. 5910 ◽  
Author(s):  
T. Ichihara ◽  
S. Nakagawa ◽  
N. Matsushita ◽  
M. Naoe
Keyword(s):  
Thin Film ◽  
Magnetic Recording ◽  
Recording System ◽  
Perpendicular Magnetic Recording ◽  
Recording Heads

scholarly journals Dual Track Complimentary Type of Thin Film Recording Heads for Perpendicular Magnetic Recording

1994 ◽  
Vol 18 (S_1_PMRC_94_1) ◽  
pp. S1_213-216
Author(s):  
Shigeki NAKAGAWA ◽  
Takayuki ICHIHARA ◽  
Nobuhiro MATSUSHITA ◽  
Masahiko NAOE
Keyword(s):  
Thin Film ◽  
Magnetic Recording ◽  
Perpendicular Magnetic Recording ◽  
Recording Heads

Head Instability Detection for Testing Process in Perpendicular Magnetic Recording System

2013 ◽  
Vol 770 ◽  
pp. 319-322 ◽  
Author(s):  
Piya Kovintavewat ◽  
Santi Koonkarnkhai ◽  
Aimamorn Suvichakorn
Keyword(s):  
Magnetic Recording ◽  
Signal To Noise Ratio ◽  
Disk Drive ◽  
Detection Algorithm ◽  
Recording System ◽  
High Signal ◽  
Signal To Noise ◽  
Perpendicular Magnetic Recording ◽  
Read Head ◽  
Pass Through

During hard disk drive (HDD) testing process, the magneto-resistive read (MR) head is analyzed and checked if the head is defective or not. Baseline popping (BLP) is one of the crucial problems caused by head instability, whose effect can distort the readback signal to the extent of causing possible sector read failure. Without BLP detection algorithm, the defective read head might pass through HDD assembling process, thus producing an unreliable HDD. This situation must be prevented so as to retain customer satisfaction. This paper proposes a simple (but efficient) BLP detection algorithm for perpendicular magnetic recording systems. Results show that the proposed algorithm outperforms the conventional one in terms of both the percentage of detection and the percentage of false alarm, when operating at high signal-to-noise ratio.

Investigation of Perpendicular Magnetic Recording Footprint by Spin-Stand Microscopy

2015 ◽  
Vol 781 ◽  
pp. 215-218
Author(s):  
Nuttapon Chaidaungsri ◽  
Arkom Kaewrawang ◽  
Komkrit Chooruang ◽  
Damrongsak Tongsomporn
Keyword(s):  
Magnetic Recording ◽  
Recording System ◽  
Perpendicular Magnetic Recording ◽  
Write Heads

The characteristics of magnetic recording are necessary to understand in order to increase the areal densities and improve the perfermance of recording system. Therefore, experimental tools must be developed to help researchers to carry out signal and noise recording experiments on different heads and media combinations. In this paper, the perpendicular magnetic recording footprint using spin-stand microscopy is demonstrated. It was found experimentally that the magnetic footprint can precisely catch some recording dynamics of the write heads during the write gate off conditions and also provide useful insight information of the recording performance.

scholarly journals MAGNETIC PROPERTIES OF VACUUM EVAPORATED Co-O THIN FILM FOR PERPENDICULAR MAGNETIC RECORDING MEDIA

1989 ◽  
Vol 13 (S_1_PMRC_89) ◽  
pp. S1_813-818 ◽  
Author(s):  
Yasuo TATENO ◽  
Kazuharu IWASAKI ◽  
Hiroji NARUSE ◽  
Takuya ITOH ◽  
Ryoji CHUBACHI
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Perpendicular Magnetic Recording

Thin Film Head for Perpendicular Magnetic Recording

1987 ◽  
Vol 2 (1) ◽  
pp. 35-47 ◽  
Author(s):  
K. Kobayashi ◽  
J. Toda ◽  
T. Yamamoto ◽  
H. Takagi ◽  
Y. Takahashi ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Recording ◽  
Perpendicular Magnetic Recording
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