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Pole tip recession or PTR (relative wear of the pole tip with respect to the air bearing surface) causes signal loss when using inductive heads. Loss of signal caused by spacing between a head gap and the recording medium is magnified in high-density short wavelength recording. Nickel iron (NiFe) is the most commonly used pole material. NiFe is softer than the head substrate material (typically Ni-Zn...
Thin film read-write magnetic heads are commonly used in data processing tape and rigid disk drives. The head body is made of magnetic ferrites or nonmagnetic Al 2 O 3 TiC and the head construction includes coatings of soft magnetic alloys, soft oxides and adhesives. Pole tip/ gap recession (relative wear of the pole tip and gap materials with respect to air bearing surface or ABS)...
Tribological characteristics of alternative magnetic tape substrates are presented along with dynamic mechanical measurements of their viscoelastic behavior. The polymeric substrates analyzed include the current industrial standard PET, and four alternative substrates PEN, ARAMID, PI, and PBO. Surface roughness characteristics obtained using an atomic force microscope (AFM) show that the alternative...
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