abstract |
This structure containing an Sn layer or an Sn alloy layer is provided with: a base material 10; an Sn layer or Sn alloy layer 12, which is formed on the base material; and an under-barrier metal 11 which is a layer of a single metal or an alloy of two or more metals selected from among Fe, Co, Ru, Rh and Pd, said layer being formed between the base material 10 and the Sn layer or Sn alloy layer 12. |