Praseodymium–Neodymium (Pr, Nd) — rare‑earth magnets and spectral signatures

Preview · 11 questions

• 01·Which element is the principal active dopant in the widely used 1064 nm solid-state laser (Nd:YAG)?
• 02·Which rare-earth element is the primary constituent of commercial high-strength NdFeB permanent magnets?
• 03·Which oxidation state is the most common and stable for both praseodymium and neodymium in compounds?
• 04·Which mineral is one of the principal ores for both praseodymium and neodymium?
• 05·Praseodymium-doped solid-state lasers are notable for emitting primarily in which region of the spectrum?
• 06·Which element often substitutes for neodymium in NdFeB magnets to improve high-temperature performance (added in small amounts)?
• 07·Which lanthanide commonly imparts a purple/violet tint to glass when present as ions?
• 08·Which oxidation state is less common but can be found for praseodymium in some compounds such as PrO2?
• 09·Which of the following is a typical lasing wavelength (approximate) of Nd3+ in solid-state lasers?
• 10·Which rare-earth element tends to produce yellow-green coloration in glass and ceramics when present as the trivalent ion?
• 11·Which commercial ore, alongside monazite, is a major source of neodymium and praseodymium?