Process considerations for critical features in high areal density thin film magnetoresistive heads: A review

1999 ◽  
Vol 35 (2) ◽  
pp. 806-811 ◽  
Author(s):  
R.E. Fontana ◽  
S.A. MacDonald ◽  
H.A.A. Santini ◽  
C. Tsang
Keyword(s):  
Thin Film ◽  
Areal Density ◽  
Magnetoresistive Heads

Overcoats and Lubrication for Thin Film Disks

MRS Bulletin ◽  
1990 ◽  
Vol 15 (3) ◽  
pp. 45-52 ◽  
Author(s):  
A.M. Homola ◽  
C.M. Mate ◽  
G.B. Street
Keyword(s):  
Thin Film ◽  
Data Storage ◽  
Magnetic Particles ◽  
Areal Density ◽  
Magnetic Film ◽  
Alloy Thin Film ◽  
Magnetic Media ◽  
Disk Interface ◽  
Storage Devices ◽  
Particulate Media

Metallic alloy thin film media and ever decreasing head-to-media spacing make severe demands on storage devices. Decreasing head-to-media separation is critical for high storage densities but it also leads to increased slider-disk interactions, which can cause slider and disk wear or even head crashes. Wear can also occur when drives start and stop when the slider contacts the disk at relatively high speeds. The reliability and durability of thin film disks, which provide much higher areal density than conventional oxide disks with particulate media, are achieved by the use of very thin overcoat materials and surface lubricants. This article summarizes the approaches taken in the industry to enhance the tribological performance of magnetic media, with special emphasis on the basic understanding of the processes occurring at the slider-disk interface.The continuous rise in the demand for storage capacity at a competitive price is the prime motivator of the changes we have seen in the data storage industry. It is clearly stimulating the present move away from particulate media, which has long dominated all fields of data storage, i.e., tape, rigid, and flexible disks, to the thin film storage media. Particulate storage devices use magnetic media formulated by dispersing magnetic particles, usually iron oxides, in an organic binder. In thin film storage devices, the storage medium is a continuous magnetic film, usually a cobalt alloy, made either by sputtering or by electroless plating.

scholarly journals HIGH S/N THIN FILM MEDIA FOR 2 Gb/in2 AREAL DENSITY

1991 ◽  
Vol 15 (S_2_PMRC_91) ◽  
pp. S2_1001-1006 ◽  
Author(s):  
Yoshibumi MATSUDA ◽  
Nobuyuki INABA ◽  
Mikio SUZUKI ◽  
Hisashi TAKANO ◽  
Masaaki FUTAMOTO
Keyword(s):  
Thin Film ◽  
Areal Density

Tunneling Magnetoresistive Heads for Magnetic Data Storage

2007 ◽  
Vol 7 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Sining Mao
Keyword(s):  
Data Storage ◽  
Tunnel Junctions ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Areal Density ◽  
Industrial Applications ◽  
Magnetic Data Storage ◽  
Thermal Dissipation ◽  
Magnetic Data ◽  
Magnetoresistive Heads

Spintronics is emerging to be a new form of nanotechnologies, which utilizes not only the charge but also spin degree of freedom of electrons. Spin-dependent tunneling transport is one of the many kinds of physical phenomena involving spintronics, which has already found industrial applications. In this paper, we first provide a brief review on the basic physics and materials for magnetic tunnel junctions, followed more importantly by a detailed coverage on the application of magnetic tunneling devices in magnetic data storage. The use of tunneling magnetoresistive reading heads has helped to maintain a fast growth of areal density, which is one of the key advantages of hard disk drives as compared to solid-state memories. This review is focused on the first commercial tunneling magnetoresistive heads in the industry at an areal density of 80 ∼ 100 Gbit/in2 for both laptop and desktop Seagate hard disk drive products using longitudinal media. The first generation tunneling magnetoresistive products utilized a bottom stack of tunnel junctions and an abutted hard bias design. The output signal amplitude of these heads was 3 times larger than that of comparable giant magnetoresistive devices, resulting in a 0.6 decade bit error rate gain over the latter. This has enabled high component and drive yields. Due to the improved thermal dissipation of vertical geometry, the tunneling magnetoresistive head runs cooler with a better lifetime performance, and has demonstrated similar electrical-static-discharge robustness as the giant magnetoresistive devices. It has also demonstrated equivalent or better process and wafer yields compared to the latter. The tunneling magnetoresistive heads are proven to be a mature and capable reader technology. Using the same head design in conjunction with perpendicular recording media, an areal density of 274 Gbit/in2 has been demonstrated, and advanced tunneling magnetoresistive heads can reach 311 Gbit/in2. Today, the tunneling magnetoresistive heads have become a mainstream technology for the hard disk industry and will still be a technology of choice for future hard disk products.

26.5 Gb/in/sup 2/ areal-density longitudinal thin film media

2000 ◽  
Vol 36 (5) ◽  
pp. 2143-2147 ◽  
Author(s):  
M.A. Schultz ◽  
S.S. Malhotra ◽  
B.B. Lal ◽  
J.M. Kimmal ◽  
M.A. Russak ◽  
...  
Keyword(s):  
Thin Film ◽  
Areal Density

Effects of current and frequency on write, read, and erase widths for thin-film inductive and magnetoresistive heads

1989 ◽  
Vol 25 (1) ◽  
pp. 710-715 ◽  
Author(s):  
T. Lin ◽  
J.A. Christner ◽  
T.B. Mitchell ◽  
J.-S. Gau ◽  
P.K. George
Keyword(s):  
Thin Film ◽  
Magnetoresistive Heads

26.5 Gb/in/sup 2/ areal-density longtudinal thin-film media

2005 ◽  
Author(s):  
M. Schultz ◽  
S. Malhotra ◽  
B. Lai ◽  
J. Kimmal ◽  
M. Russak ◽  
...  
Keyword(s):  
Thin Film ◽  
Areal Density
Sign in / Sign up

Export Citation Format

Share Document