Materials for near field transducers and near field transducers containing same

US11107499B2 · kind B2 · utility

Assignee

• Seagate Technology LLC · US

Inventors

• Yuhang Cheng · Edina, US
• Tong Zhao · Eden Prairie, US
• Michael C. Kautzky · Eagan, US
• Ed F. Rejda · Bloomington, US
• Kurt W. Wierman · Eden Prairie, US
• Scott Franzen · Savage, US
• Sethuraman Jayashankar · Dorpsstraat, US
• Sarbeswar Sahoo · Shakopee, US
• Jie Gong · Eden Prairie, US
• Michael Allen Seigler · Eden Prairie, US

Key dates

• Filing date: Nov 19, 2019
• Grant date: Aug 31, 2021
• Expiry date: Nov 19, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B2005/0021
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A device including a near field transducer, the near field transducer including gold (Au) and at least one other secondary atom, the at least one other secondary atom selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), hafnium (Hf), niobium (Nb), manganese (Mn), antimony (Sb), tellurium (Te), carbon (C), nitrogen (N), and oxygen (O), and combinations thereof; erbium (Er), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), zinc (Zn), and combinations thereof; and barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), gadolinium (Gd), germanium (Ge), hydrogen (H), iodine (I), osmium (Os), phosphorus (P), rubidium (Rb), rhenium (Re), selenium (Se), samarium (Sm), terbium (Tb), thallium (Th), and combinations thereof.