1. A method of reading information stored as ferroelectric domains in a media including a ferroelectric layer and a passivation layer disposed over the ferroelectric layer using a tip, the method comprising:
positioning the tip near the media so that the tip approximately contacts the passivation layer;
moving one of the tip and the media at a scan speed so that the tip detects a polarization signal having a radio frequency;
wherein the polarization signal corresponds to changes in polarization of the ferroelectric domains formed in the ferroelectric layer; and
wherein the passivation layer resists formation of hydrocarbons between the tip and the media.
2. A method of forming a passivation layer over a ferroelectric layer of a ferroelectric media comprising:
exposing the ferroelectric layer to a plasma including one of oxygen, oxygen-helium, and oxygen-nitrogen-helium;
etching a surface of the ferroelectric layer;
forming one of a substantially oxygen-enriched layer and a substantially hydroxyl-enriched layer at the surface of the ferroelectric layer;
introducing the ferroelectric layer to an environment comprising substantially nitrogen; and
maintaining the ferroelectric layer within the environment so that nitrogen enriches the one of a substantially oxygen-enriched layer and a substantially hydroxyl-enriched layer to form a passivation layer.
3. A method of reducing a gap between a readwrite tip and a ferroelectric layer of a ferroelectric media storing information comprising:
exposing the ferroelectric layer to a plasma primarily including one of oxygen, oxygen-helium, and oxygen-nitrogen-helium;
etching a surface of the ferroelectric layer to remove a hydrocarbon layer;
forming a substantially oxygen enriched layer at the surface;
introducing the ferroelectric layer to an environment comprising substantially nitrogen; and
maintaining the ferroelectric layer within the environment so that nitrogen enriches the substantially oxygen enriched layer to form a passivation layer having a thickness narrower than the hydrocarbon layer thereby reducing a gap between the readwrite tip and the ferroelectric layer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An emergency ejection device for a slot-in disk drive, the slot-in disk drive comprising a housing and a sliding component, the emergency ejection device comprising:
a driving motor disposed inside the housing for driving a worm gear;
a rotating component, a central hole of the rotating component being fixed on the housing in a rotatable manner, a sliding slot being formed on an end of the rotating component, a fixing hole being formed on the other end of the rotating component, and a buckling slot being formed on an end of the sliding slot;
a gear set comprising:
a first gear disposed on the central hole of the rotating component and engaged with the worm gear;
a clutching gear disposed on the fixing hole and engaged with the first gear; and
a second gear fixed on the housing and engaged with the clutching gear;
a locking component disposed on the housing via a hole in a rotatable manner, a sliding column protruding from an end of the locking component and inserting inside the sliding slot, and an inclined surface protruding from the other end of the locking component; and
a spring, an end of the spring being fixed on a lateral side of the driving motor and the other end of the spring being fixed on a side of the locking component adjacent to the inclined surface;
wherein the spring provides an elastic force for holding the sliding column inside the buckling slot so as to constrain the buckling slot to move in a rotary direction of the rotating component and to keep engagement of the clutching gear with the second gear.
2. The emergency ejection device of claim 1, wherein the driving motor is disposed on a fixing base, and a first hook is disposed on the fixing base adjacent to a lateral side of the driving motor for fixing the spring.
3. The emergency ejection device of claim 1, wherein a second hook is disposed on the end of the locking component whereon the inclined surface is formed for fixing the spring.
4. The emergency ejection device of claim 1, wherein the rotating component comprises two ends stretching out from the central hole as a crook.
5. The emergency ejection device of claim 1, wherein the locking component is located below the sliding component so that the inclined surface and the sliding component are positioned at the same height.
6. The emergency ejection device of claim 1, wherein an emergency ejecting hole is formed on the housing facing to the inclined surface.
7. The emergency ejection device of claim 1, wherein the sliding column moves along the sliding slot so as to rotate the rotating component for driving the clutching gear and the second gear to engage with or disengage from each other.
8. The emergency ejection device of claim 7, wherein the sliding column moves away from the buckling slot so that the rotating component rotates to drive the clutching gear to disengage from the second gear.
9. An emergency ejection device for a slot-in optical disk drive, the slot-in optical disk drive comprising a housing and a sliding component, the emergency ejection device comprising:
a driving motor disposed inside the housing for driving a worm gear;
a rotating component, a central hole of the rotating component and a first gear engaged with the worm gear being disposed on the housing in a rotatable manner, a sliding slot being formed on an end of the rotating component, a buckling slot being formed on an end of the sliding slot, and a clutching gear engaged with the first gear being disposed on the other end of the rotating component;
a second gear fixed on the housing and engaged with the clutching gear;
a locking component disposed on the housing via a hole in a rotatable manner, a sliding column protruding from an end of the locking component and inserting inside the sliding slot, and an inclined surface protruding from the other end of the locking component; and
a spring, an end of the spring being disposed on a lateral side of the driving motor and the other end of the spring being disposed on a side of the locking component adjacent to the inclined surface;
wherein the spring provides an elastic force for holding the sliding column inside the buckling slot so as to constrain the buckling slot to move in a rotary direction of the rotating component and to keep engagement of the clutching gear with the second gear, and a line of force applying on the sliding column by the buckling slot in a rotary direction of the rotating component substantially is close to a central hole of the locking component when the rotating component is rotated.
10. The emergency ejection device of claim 9, wherein the locking component is located below the sliding component so that the inclined surface and the sliding component are positioned at the same height.
11. The emergency ejection device of claim 9, wherein an emergency ejecting hole is formed on the housing facing to the inclined surface.
12. The emergency ejection device of claim 9, wherein the sliding column moves along the sliding slot so as to rotate the rotating component for driving the clutching gear and the second gear to engage with or disengage from each other.