Thermally assisted magnetic recording head
A thermally assisted magnetic recording head is formed of a slider and a magnetic head. The magnetic head includes a main pole, a reader, a coil, a near-field transducer, and a waveguide. A metal film with high thermal conductivity is formed at both sides of the near-field transducer in a width direction of the magnetic head. The use of the metal film as a radiator plate ensures to prevent the temperature of the near-field transducer from becoming locally high.
1. A thermally assisted magnetic recording head provided with a slider and a magnetic head formed on an end surface of the slider,
wherein the magnetic head includes a reader, a magnetic film, a main pole, a coil, a near-field transducer formed on an air bearing surface near the main pole, and a waveguide for guiding light to the near-field transducer; and
wherein a metal film is formed near the near-field transducer, the metal film being a radiation plate for releasing heat caused by the near-field transducer and being formed to extend from both sides of the near-field transducer in a widthwise direction of the magnetic head.
2. The thermally assisted magnetic recording head according to claim 1 , wherein the metal film is formed of a high thermal conductivity material.
3. The thermally assisted magnetic recording head according to claim 1 , wherein the near-field transducer and the magnetic film are connected via a metal body.
4. The thermally assisted magnetic recording head according to claim 3 , wherein the magnetic film is a magnetic material other than a primary magnetic pole near the near-field transducer.
5. The thermally assisted magnetic recording head according to claim 1 , wherein a metal wiring is formed in the magnetic head, and has one end connected to the near-field transducer and another end grounded.
6. A thermally assisted magnetic recording head provided with a slider and a magnetic head formed on an end surface of the slider,
wherein the magnetic head includes a reader, a magnetic film, a main pole, a coil, a near-field transducer formed on an air bearing surface near the main pole, and a waveguide for guiding light to the near-field transducer; and
wherein the near-field transducer and the magnetic film are connected via a metal body for releasing heat caused by the near-field transducer to the magnetic film.
7. The thermally assisted magnetic recording head according to claim 6 , wherein the metal body is formed of a high thermal conductivity material.
8. The thermally assisted magnetic recording head according to claim 6 , wherein the magnetic film is a magnetic material other than a primary magnetic pole near the near-field transducer.
9. The thermally assisted magnetic recording head according to claim 6 , wherein a metal wiring is formed in the magnetic head, and has one end connected to the near-field transducer and another end grounded.
10. A thermally assisted magnetic recording head provided with a slider and a magnetic head formed on an end surface of the slider,
wherein the magnetic head includes a reader, a magnetic film, a main pole, a coil, a near-field transducer formed on an air bearing surface near the main pole, and a waveguide for guiding light to the near-field transducer; and
a metal wiring is formed in the magnetic head, and has one end connected to the near-field transducer and another end grounded, the metal wiring releasing heat caused by the near-field transducer and functioning as a heat sink.
11. The thermally assisted magnetic recording head according to claim 10 ,
wherein a metal film is formed near the near-field transducer; and
the near-field transducer and the magnetic film are connected via a metal body.
12. The thermally assisted magnetic recording head according to claim 11 , wherein each of the metal film and the metal body is formed of a high thermal conductivity material.
13. The thermally assisted magnetic recording head according to claim 11 , wherein the metal film is formed to extend from both sides of the near-field transducer in a widthwise direction of the magnetic head.
14. The thermally assisted magnetic recording head according to claim 11 , wherein the magnetic film is a magnetic material other than a primary magnetic pole near the near-field transducer.