A data profile engine identifies, classifies, analyzes, searches, compares and cross-references entire files and sections of files, records and other forms of electronic media, and a tool creation engine in combination with the data profile engine builds custom solutions and product interfaces. Ferromagnetic film deposition dead zone area problems and the consequent problem of film rippling in free layer portions that reduces element sensitivity are prevented, as is the problem of increased error from read drift in the magnetic field exchange coupling method, resulting in a highly stable, highly sensitive MR head with no loss of magnetic field intensity. The TiB2 layer includes Cl together with TiB2. A front end of the audio plug connector passes through the elastic body and is restrained by the elastic body.