Ferroelectric recording medium comprising anisotropic conduction layer, recording apparatus comprising the same, and recording method of the same

A recording apparatus comprising:

• a head tip performing a reading/writing operation;
• and
• a ferroelectric recording medium comprising:
• a ferroelectric recording layer that includes sectors for storing data and is formed of a polarization reversal ferroelectric material, and
• an anisotropic conduction layer that includes sectors corresponding to the sectors of the ferroelectric recording layer, respectively, covers the ferroelectric recording layer, and changes into a conductor or a non-conductor based on external energy,
• wherein each of the sectors of the anisotropic conduction layer directly contacts each surrounding sector of the anisotropic conduction layer.

A recording method of a ferroelectric recording medium having a ferroelectric recording layer that includes sectors for storing data and an anisotropic conduction layer that includes sectors corresponding to the sectors of the ferroelectric recording layer, respectively, and covers the ferroelectric recording layer, the method comprising:

• applying external energy to the anisotropic conduction layer;
• changing the anisotropic conduction layer into a conductor using the external energy;
• transferring the external energy to the ferroelectric recording layer through the anisotropic conduction layer;
• and
• reversing the polarization of the ferroelectric recording layer using the external energy to perform a recording operation,
• wherein each of the sectors of the anisotropic conduction layer directly contacts each surrounding sector of the anisotropic conduction layer.

A ferroelectric recording medium comprising:

• a ferroelectric recording layer that includes sectors for storing data and is formed of a polarization reversal ferroelectric material;
• and
• an anisotropic conduction layer that includes sectors corresponding to the sectors of the ferroelectric recording layer, respectively, covers the ferroelectric recording layer, and changes into a conductor or a non-conductor based on external energy,
• wherein when the anisotropic layer is changed into a conductor, an electrical path is formed only between the anisotropic conduction layer and the ferroelectric recording layer below the anisotropic conduction layer in a direction perpendicular to the plane of the anisotropic conduction layer, and the anisotropic conduction layer remains an insulator in the plane parallel to the anisotropic conduction layer.

A recording apparatus comprising:

• a head tip performing a reading/writing operation;
• and
• a ferroelectric recording medium comprising:
• a ferroelectric recording layer that includes sectors for storing data and is formed of a polarization reversal ferroelectric material, and
• an anisotropic conduction layer that includes sectors corresponding to the sectors of the ferroelectric recording layer, respectively, covers the ferroelectric recording layer, and changes into a conductor or a non-conductor based on external energy,
• wherein when the anisotropic layer is changed into a conductor, an electrical path is formed only between the anisotropic conduction layer and the ferroelectric recording layer below the anisotropic conduction layer in a direction perpendicular to the plane of the anisotropic conduction layer, and the anisotropic conduction layer remains an insulator in the plane parallel to the anisotropic conduction layer.

A recording method for a ferroelectric recording medium having a ferroelectric recording layer that includes sectors for storing data and an anisotropic conduction layer that includes sectors corresponding to the sectors of the ferroelectric recording layer, respectively, and covers the ferroelectric recording layer, the method comprising:

• applying external energy to the anisotropic conduction layer;
• changing the anisotropic conduction layer into a conductor using the external energy;
• transferring the external energy to the ferroelectric recording layer through the anisotropic conduction layer;
• and
• reversing the polarization of the ferroelectric recording layer using the external energy to perform a recording operation,
• wherein when the anisotropic layer is changed into a conductor, an electrical path is formed only between the anisotropic conduction layer and the ferroelectric recording layer below the anisotropic conduction layer in a direction perpendicular to the plane of the anisotropic conduction layer, and the anisotropic conduction layer remains an insulator in the plane parallel to the anisotropic conduction layer.