Dysprosium
Disprosio (Dy, Z=66)
- Date
- 1886 · confidence high
- Place
- Paris, France
- Credited to
- Paul-Émile Lecoq de Boisbaudran
- People
- 👤 Paul Emile Lecoq de Boisbaudran1838–1912
- Field
- Matter & energy
What was discovered
Lecoq separated it from holmium after more than thirty fractional precipitations with ammonia, hence its name ('hard to obtain').
Pure only since 1950, with ion exchange.
What it led to
- Additive in neodymium magnets for electric vehicle motors
- Nuclear control rods
- Terfenol-D and lasers
Built on
- Cleve's holmia
- Fractional precipitation
Made possible
- High-temperature NdFeB magnets
- Metal-halide lamps