Method and system for providing enhanced thermal expansion for hard disk drives
AssigneeWestern Digital (Fremont), LLC
InventorsNeil Knutson, Yu Lo
Life of this patent
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Abstract
A method and system provide a magnetic read and/or write transducer for use in disk drive. A read transducer has an air-bearing surface (ABS) and includes a read sensor, a nonmagnetic gap, a heater, and an expander. The nonmagnetic gap is adjacent to a portion of the read sensor and has a first coefficient of thermal expansion (CTE). The heater heats a portion of the magnetic read transducer. The expander is adjacent to a portion of the nonmagnetic gap and has a second CTE greater than the first CTE. The write transducer includes a pole, a coil, an insulator adjacent to and for insulating the coil, a heater and an expander. The expander has a CTE greater than the insulator's CTE.
Claims9
A magnetic read transducer having an air-bearing surface (ABS) comprising:
- a read sensor;
- a nonmagnetic gap adjacent to a portion of the read sensor, the nonmagnetic gap having a first coefficient of thermal expansion (CTE);
- a heater for heating a portion of the magnetic read transducer;
- and
- an expander adjacent to a portion of the nonmagnetic gap, the expander having a second CTE greater than the first CTE.
Dependencies are inferred from the claim text.