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Neodymium - Wikipedia ... Neodymium
Neodymium magnet
edit. Naturally occurring neodymium (60 Nd) is composed of 5 stable isotopes, 142 Nd, 143 Nd, 145 Nd, 146 Nd and 148 Nd, with 142 Nd being the most abundant (27.2% natural abundance), and 2 long-lived radioisotopes, 144 Nd and 150 Nd. In all, 33 radioisotopes of neodymium have been characterized up to now, with the most stable being naturally ...
A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets. The magnetic field typically produced by rare-earth ...
Neodymium compounds are compounds formed by the lanthanide metal neodymium (Nd). In these compounds, neodymium generally exhibits the +3 oxidation state, such as NdCl 3, Nd 2 (SO 4) 3 and Nd (CH 3 COO) 3. Compounds with neodymium in the +2 oxidation state are also known, such as NdCl 2 and NdI 2. Some neodymium compounds have colors that vary ...
Samarium–neodymium dating. Samarium–neodymium dating is a radiometric dating method useful for determining the ages of rocks and meteorites, based on the alpha decay of the long-lived samarium isotope (147. Sm) to the stable radiogenic neodymium isotope (143. Nd).
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Neodymium tungstate is an inorganic compound, a salt of neodymium and tungstic acid with the chemical formula Nd 2 (WO 4) 3. It forms hydrated light purple crystals [ 1] that are slightly soluble in water.
Neodymium(III) sulfide is a inorganic chemical compound with the formula Nd 2 S 3 [2] composed of a two neodymium atoms in the +3 oxidation state and three sulfur atoms in the -2 oxidation state. Like other rare earth sulfides, neodymium(III) sulfide is used as a high-performance inorganic pigment.