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    • 85. 发明专利
    • Thermally assisted magnetic recording head having plasmon generator
    • 具有等离子发生器的热辅助磁记录头
    • JP2014059941A
    • 2014-04-03
    • JP2013095267
    • 2013-04-30
    • Headway Technologies Incヘッドウェイテクノロジーズ インコーポレイテッド
    • SASAKI YOSHITAKAITO HIROYUKITANEMURA SHIGEKISATO KAZUKIARAKI HIRONORI
    • G11B5/31G11B5/02
    • G11B5/314G11B5/6088G11B2005/0021
    • PROBLEM TO BE SOLVED: To increase a linear recording density in a thermally assisted magnetic recording head including a main pole, a Plasmon generator, a waveguide, and a shield.SOLUTION: A near-field light generating part 40g of a Plasmon generator 40 is arranged between an end surface 19a of a main magnetic pole 19 arranged on a medium-opposing surface and an end surface 16a of a shield 16 arranged on the medium-opposing surface. A core 13 of a waveguide has a front end surface 13a directed toward the medium-opposing surface. The front end surface 13a has first and second end parts E1, E2 which are positioned at both ends in a travelling direction of the recording medium. The first end part E1 is at a position nearer to the near-field light generating part 40 than the second end part E2. One of the main magnetic pole 19 and the shield 16 is overlapped only in the area from a middle position C between the first end part E1 and the second end part E2 up to the first end part E1 among the front end surface 13a of the core 13.
    • 要解决的问题:提高包括主极,等离子体发生器,波导和屏蔽的热辅助磁记录头中的线性记录密度。解决方案:等离子体发生器40的近场光产生部分40g是 布置在布置在介质相对表面上的主磁极19的端表面19a和布置在介质相对表面上的屏蔽16的端表面16a之间。 波导芯13具有朝向介质相对表面的前端表面13a。 前端面13a具有位于记录介质的行进方向两端的第一和第二端部E1,E2。 第一端部E1位于比第二端部E2更靠近近场光产生部40的位置。 主磁极19和屏蔽体16中的一个仅在从第一端部E1和第二端部E2之间的中间位置C到核心的前端表面13a之间的第一端部E1的区域中重叠 13。
    • 89. 发明专利
    • Plasmon generator including two parts made of different metals
    • 等离子发生器,包括不同金属的两个部件
    • JP2013097855A
    • 2013-05-20
    • JP2012109573
    • 2012-05-11
    • Headway Technologies Incヘッドウェイテクノロジーズ インコーポレイテッド
    • SASAKI YOSHITAKAITO HIROYUKITANEMURA SHIGEKIARAKI HIRONORISATO KAZUKIIKEGAWA YUKINORI
    • G11B5/31G11B5/02G11B5/60
    • G11B5/314G11B5/6088G11B2005/0021
    • PROBLEM TO BE SOLVED: To provide performance that cannot be achieved by a plasmon generator made of a single material while efficiently propagating a surface plasmon by a plasmon generator.SOLUTION: A plasmon generator 50 for exciting a surface plasmon by being combined with evanescent light generated by a core of a waveguide includes a first part 51 made of a first metal material and a second part 52 made of a second metal material different from the first metal material. The plasmon generator 50 has a front end face 50a, and the front end face 50a includes a near-field light generation part 50g for generating near-field light on the basis of the surface plasmon. The second part 52 includes an end face 52a arranged at the front end face 50a. The second metal material satisfies at least one requirement among the following requirements having smaller ionization tendency, smaller electric conductivity and larger Vickers hardness than the first metal material does.
    • 要解决的问题:提供由单一材料制成的等离子体发生器不能实现的性能,同时通过等离子体发生器有效地传播表面等离子体激元。 解决方案:用于通过与波导芯产生的ev逝光组合来激发表面等离子体激元的等离子体激元器件50包括由第一金属材料制成的第一部分51和由不同于第二金属材料的第二金属材料制成的第二部分52 从第一种金属材料。 等离子体发生器50具有前端面50a,前端面50a包括用于基于表面等离子体激元产生近场光的近场光产生部分50g。 第二部分52包括布置在前端面50a处的端面52a。 第二金属材料满足以下要求中的至少一个要求,其具有比第一金属材料更小的电离倾向,更小的导电性和更大的维氏硬度。 版权所有(C)2013,JPO&INPIT