Chemical Formula: In
Catalog Number: ST0021
CAS Number: 7440-74-6
Purity: 99.99%, 99.999%
Shape: Discs, Plates, Column Targets, Step Targets, Custom-made
Atomic Weight: 114.818
Atomic Number: 49
Color/Appearance: Silvery Lustrous Gray, Metallic
Thermal Conductivity: 82 W/m.K
Melting Point (°C): 157
Coefficient of Thermal Expansion: 32.1 x 10-6/K
Theoretical Density (g/cc): 7.3
Z Ratio: 0.841
Type of Bond: Elastomer
Comments: Wets W and Cu. Use Mo liner. Low Melting Point materials not ideal for sputtering.
1. Elastomer bonding is recommended for this material, due to some of its characteristics not amenable to sputtering like brittleness, low thermal conductivity, etc.
Indium is a chemical element originated from the Latin ‘indicium’, meaning violet or indigo. It was first mentioned in 1863 and observed by F. Reich and T. Richter. The isolation was later accomplished and announced by T. Richter. “In” is the canonical chemical symbol of indium. Its atomic number in the periodic table of elements is 49 with location at Period 5 and Group 13, belonging to the p-block. The relative atomic mass of indium is 114.818(3) Dalton, the number in the brackets indicating the uncertainty.
Indium compounds are evaporated under vacuum to form thin films in the production of electronics and photovoltaic cells. Pure indium is utilized as a film layer in semiconductors.