Ferroelectric storage apparatus and manufacturing method of conductive probe

A ferroelectric storage apparatus comprising:

• a ferroelectric recording medium;
• a conductive probe;
• a probe slider configured to cause the conductive probe to travel by floating above a surface of the ferroelectric recording medium;
• a ferroelectric recording medium driver configured to rotate the ferroelectric recording medium;
• and
• a recording-and-reproduction signal processor configured to process a write signal and a read signal of information transmitted to and received from the conductive probe,
• wherein the conductive probe includes:
• a base body constituted by a conductive material;
• an insulating layer formed on the base body and includes a through hole;
• and
• a needle-shaped electrode formed on the base body in the through hole and electrically connected to the recording-and-reproduction signal processor,
• wherein the needle-shaped electrode is configured to write information to the ferroelectric recording medium by polarizing a ferroelectric layer of the ferroelectric recording medium by an electric field generated at a tip of the needle-shaped electrode,
• wherein the needle-shaped electrode is configured to read information recorded in the ferroelectric recording medium by detecting a tunnel current flowing between the needle-shaped electrode and the ferroelectric recording medium or by detecting an atomic force between the needle-shaped electrode and the ferroelectric recording medium, and
• wherein a portion of the needle-shaped electrode protrudes from a surface of the insulating layer.