Materials for near field transducers and near field transducers containing same

A device comprising:

• a light source;
• a waveguide;
• and
• a near field transducer, the near field transducer comprising gold (Au) and at least one other secondary atom present in an amount from 0.01 atomic percent to about 5 atomic percent, the at least one other secondary atom selected from:
• boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), manganese (Mn), 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,
• wherein the light source, waveguide and near field transducer are configured to transmit light from the light source to the waveguide and finally the near field transducer.

A disc drive comprising:

• at least one actuator arm having a first and a second end;
• at least one head, wherein each arm has a head at the first end thereof and wherein each head comprises:
• a light source;
• a near field transducer, the near field transducer comprising gold (Au) and at least one other secondary atom present in an amount from 0.01 atomic percent to about 5 atomic percent, the at least one other secondary atom selected from:
• boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), manganese (Mn), 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;
• a magnetic reader;
• and
• a magnetic writer,
• wherein the light source and the near field transducer are configured to transmit light from the light source to the near field transducer in order to assist the magnetic writer with writing.