| 摘要 |
<p>A mark smaller than a resolution limit is recorded and reproduced or only reproduced, higher reproducibility (CNR and the like) is obtained and high reproduction durability is achieved. A thermally stable diffusion preventing layer is introduced between a signal reproducing functional layer composed of Sb or Te and a protecting layer so as to prevent or suppress reaction due to temperature increase of an interface between the signal reproducing functional layer and the protecting layer and improve reproduction durability.</p> |
