Near-field transducer having at least one secondary atom

A device comprising:

• a light source;
• a waveguide;
• and
• a near field transducer, the near field transducer comprising a peg and a disc, the peg having a region adjacent the ABS, the peg comprising:
• a plasmonic material selected from gold (Au), silver (Ag), copper (Cu), ruthenium (Ru), rhodium (Rh), aluminum (Al), or combinations thereof;
• and
• at least one other secondary atom selected from germanium (Ge), tellurium (Te), aluminum (Al), antimony (Sb), tin (Sn), mercury (Hg), indium (In), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), silver (Ag), chromium (Cr), cobalt (Co), and combinations thereof, the concentration of the at least one secondary atom being not less than 0.001 at % and not greater than 30 at % in the peg and 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.