Investigation on wear and recession of the GMR head in helical-scan tape systems

Metal Evaporated Media

“…The compatibility of the new sensor technology with the specific head-medium interface had to be demonstrated. A lot of work has been performed to show that both the magnetoresistive heads and metal evaporated media could endure large number of recording passes without significant degradation of the recording performances (Kawakami et al, 2005;Ozue et al, 1999;Soda et al, 2001Soda et al, , 2003. The advantages of anisotropic magneto-resistive sensors over inductive sensors for recording on obliquely evaporated media have been reported by Ozue et al (Fukuda et al, 2000;Ozue et al, 1998Ozue et al, , 1999.…”

“…The tape surface roughness and abrasiveness have also to be minimized to limit head wear and head recession which creates additional spacing loss (Osaki, 2000). This is particularly a concern for the use of metal evaporated tape with magnetoresistive read sensors (Hansen and Bhushan, 2006;Kamatani et al, 1999Kamatani et al, , 2005Ozue et al, 1999). The design of the tape surface roughness thus requires some compromise on the recording performance to achieve sufficient durability and runnability characteristics.…”