公开(公告)号：GB2515051A

公开(公告)日：2014-12-17

申请号：GB201310445

申请日：2013-06-12

Applicant: IBM

Inventor： JONNALAGADDA VARAD PRASAD ,  DELLMANN LAURENT A ,  ENGELEN JOHAN B C ,  LANTZ MARK ALFRED

IPC: G11B5/187 ,  G11B5/255

Abstract: A tape head 1g has a tape-bearing surface 21 configured, in operation, to urge a magnetic tape against the bearing surface. The bearing surface comprises a transducer area 44 having at least one transducer 40 that is a read and/or write element, and a structured area 50u, 50d, 52l, 52r adjacent to the transducer area comprising a periodic array of protruding topographic features. The topographic features configured to determine a minimal distance between the transducer area and a tape. The tape bearing surface can comprise different structured areas having different topographic features or areas without topographic features. The topographic features may have a diameter between 100 and 5000 nm with a distance between the features of 1 and 20 micrometres. A layer of material, such as FeN, TiN, SiN, diamond like carbon, or aluminium oxide, may be deposited on top of the features.