Patent ID: 8964514
Filing Date: 2015-02-24
Classification: G02B,G11B,Y10T

Abstract:
1. A plasmon-generator for use in a thermally assisted magnetic recording head including a waveguide that propagates light and the plasmon-generator that generates near-field light by coupling with light propagated through the waveguide in a surface plasmon mode, the plasmon-generator comprising: an opposing surface that includes a surface plasmon mode coupling portion that is coupled with light propagated through the waveguide in a surface plasmon model, and a plasmon propagation part that propagates surface plasmon from the coupling portion, and that is opposite to the waveguide; a near-field light generating end surface that is positioned in a distal end part on the propagation part and that generates the near-field light, a first configuration member including the near-field light generating end surface; and a second configuration member joined and integrated with the first configuration member and not including the near-field light generating end surface, the first configuration member is configured to contain Au as a primary component and to contain any one or more elements selected from a group of Co, Fe, Sb, Nb, Zr, Ti, Hf, and Ta, and is configured so that a content percentage X the second configuration member consists essentially of Au.