High speed magnetisable disk contact recording and reading system

A high speed magnetisable disk contact recording and reading system comprising a recording disk (10) including a substrate with a coating (15) thereon of a magnetisable material having a relatively low thermal conductivity, a magnetic recording and reading transducer (17) in physical contact with the recording disk (10), and means (21) to produce relative motion between the magnetisable recording disk and said transducer. According the invention the system is characterised in that the transducer comprises a substrate of a single crystal material having a relatively high thermal conductivity, a relatively low friction coefficient and a high surface energy, whereby an attractive force is exerted between the recording medium said transducer so that the transducer is maintained in contact with the recording medium during said relative motion and high density recorded data can be reliably written on and sensed from the recording medium.