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Magnetic recording heads

Magnetic ceramics can satisfy virtually all the required characteristics for a recording head they show a distinct advantage over metallic materials with regard to stability and wear properties. Since ceramics have a combination of covalent and ionic bonding, they are extremely hard and therefore, resistant to wear. They are oxides and are therefore chemically stable, since no further oxidation can be expected. [Pg.208]

Hard-disc drive heads are subjected to a heavier use and therefore need a different design in order to prevent wear and extend the useful life of both the disc and the head. Hard-disc drive heads (also known as Winchester heads) make no physical contact with the hard disc. They are designed to fly very close to the disc, supported by the air flow resulting from the disc rotation. Fig. 5.18. The magnetic element in Winchester heads is usually a Mn-Zn ferrite. [Pg.209]


Gao, R, "Application of Ultra-Fine Diamond Slurry in Polishing Magnetic Recording Heads, Master Thesis, Tsinghua University, 2001. [Pg.269]

Assembly of magnetic recording heads Sealing stainless steel shells on submerged pump motors Bonding stranded wire ends Bonding thermal and electronic insulators... [Pg.13]

A considerable amount of work remains to be done to develop models for alloy-deposition systems. These are of appreciable commercial significance, especially for magnetic-recording-head fabrication [9, 67] and in chip-connection technology [68]. Here, it is not only the thickness but also the composition of the deposit that must be kept uniform. The behavior of codepositing metals is sometimes quite unusual and mysterious. At present, many research projects focus on the mechanisms of alloy depositions. Much of this work is reviewed in another chapter of this volume [69]. [Pg.154]

Broz JS, Braun HB, Brodbeck O, Baltenspeiger W, Helman JS (1990) Nncleation of magnetization reversal via creation of pairs of Bloch walls. Phys Rev Lett 65 787-789 Brag JA, Anthony TC, Nickel JH (1996) Magnetic recording head materials. Mater Res Soc Bnll, September 1996 23-27... [Pg.280]

A magnetic recording head that uses magnetic flux flowing from and into the coil for read-write operations, is called an inductive head . Figure 6.4 shows a schematic illustration of an inductive head. [Pg.69]

Though NigjjFe , permalloy has superior properties for magnetic recording head core, the film has low resistivity (20 pOcm). Therefore, some researchers have reported permalloys with high resistivity, such as Moco-deposition permalloys [51], Reports also indicate that an increase in the resistivity can be achieved by codeposition with metalloid-forming elements, such as sulfur, carbon, or phosphorus [52, 53], The inclusion of impurities is said to result in an increase in resistivity. Ni jFejj permalloy had been widely used for write head core because the film has high B value (14-16 kG). Ni Fe permalloy co-deposited Mo or Cr is also reportedly in use [54]. [Pg.78]

Takahashi S et al (2005) Magnetic recording head for patterned medium with 1 Tbit/inch. Abs intT symp. creation of magnetic recording materials with nano-interfacial technologies, Waseda University, Tokyo, PS08 27... [Pg.128]

M.H. Kryder, An introduction to magnetic recording heads, Proceedings of the NATO Advanced Study Institute, ed. by G.C. Hadjipanayis, Dordrecht, Netherlands. Kluwer (2001) pp. 449-466. [Pg.189]

Table 5.1. Optimal properties of magnetic recording heads. Table 5.1. Optimal properties of magnetic recording heads.
Magnetic recording heads Magnets, electric motors... [Pg.3]

Compositions such as Co32Ni55RegP7, Co3iNiigP7 and Co34Ni5gP7 are used in high-density magnetic recording heads. [Pg.1207]

Electrically insulating cements Phosphor bronze contacts A Magnetic recording heads... [Pg.1222]


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See also in sourсe #XX -- [ Pg.207 ]




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