Patent ID: 8374070

Claim:
A magnetic recording medium comprising: a substrate; a magnetic recording layer formed on said substrate to record magnetic information; and piezoelectric material disposed adjacent to said magnetic recording layer and capable of contracting and expanding, and further comprising: first electrodes formed in such a manner as to be spaced a predetermined distance apart from each other on said substrate in the direction crossing a track on said magnetic recording layer or in a direction extending along said track; second electrodes formed in such a manner as to be spaced a predetermined distance apart from each other in a vertical direction in-plane relative to the direction of said first electrodes formed on said magnetic recording layer, and wherein said piezoelectric material is comprised of piezoelectric members that are formed as a first piezoelectric element and a second piezoelectric element, respectively, said first piezoelectric element is formed between said first electrodes, said second piezoelectric element is formed between said second electrodes, and said magnetic recording layer is formed between said first piezoelectric element and said second piezoelectric element.