MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING METHOD, AND MAGNETIC RECORDING DEVICE

摘要

A magnetic recording medium comprises a substrate, a magnetic recording layer formed on the substrate and recording magnetic information, and piezoelectric material portions capable of extending and contracting and disposed adjacent to the magnetic recording layer. The piezoelectric material portions are preferably formed on the substrate with a predetermined spacing in a direction crossing a track on the magnetic recording layer, and the magnetic recording layer is formed between the piezoelectric material portions. The piezoelectric material portions extend and contract at least in the direction crossing the track by being irradiated with laser light or ultraviolet light. The piezoelectric material portions are formed of lanthanum lead zirconate titanate, barium titanate, or potassium niobate.