Neodymium (Nd)

We are a leading manufacturer and supplier of research materials

Neodymium 60Nd144.24

Separated in 1885 by Baron Auer von Welsbach at Vienna, Austria.

[Greek, neos didymos = new twin]

French: néodyme
German: Neodym
Italian: neodimio
Spanish: neodimio

Description: Neodymium is a silvery-white metal of the so-called rare earth group (more correctly termed the lanthanides). It tarnishes in air, reacts slowly with cold water, rapidly with hot. Neodymium is used in alloys for permanent magnets, lasers, flints, glazes and glass.


Further Materials properties


Crystal structure:

(cell dimensions/pm), space group, 
α-Nd hexagonal (a=365.79, c=1179.92), P63/mmc
β-Nd b.c.c. (a=413), Im3m
T (α -> β) = 1135 K
high pressure form: f.c.c. (a=480), Fm3m

X-ray diffractions mass absorption coefficients: CuKa 374 (µ/r) / cm2g-1
MoKa 53.2 (µ/r) / cm2g-1
Neutron scattering length: 0.769 b/10-12 cm
Thermal neutron capture cross-section: 49 sa / barns
Density: 7007 kg/m-3 [293 K]
Melting point: 1020.85°C / 1294°K
Boiling point: 3067.85°C / 3341°K
Molar volume: 20.59 cm3
Thermal conductivity: 16.5 [300 K] W m-1K-1
Coefficient of linear thermal expansion: 6.7 x 10-6 K-1
Electrical resistivity: 64.0 x 10-8 [298 K] Ωm
Mass magnetic susceptibility: +4.902 x 10-7(s) kg-1m3
Radi: Nd3+ 104; atomic 182; covalent 164
Electronegativity: 1.14 (Pauling); 1.07 (Allred); ≤ 3.0 eV (absolute)
Effective nuclear charge: 2.85 (Slater); 9.31 (Clementi); 10.83 (Froese-Fischer)
Number of Isotopes (incl. nuclear isomers): 24
Isotope mass range: 133 -> 154



Biological data


Biological role: None.
Toxic intake: n.a.
Lethal intake: LD50 (chloride, oral, mouse) = 5250 mg kg-1
Hazards: Neodymium is mildly toxic by ingestion, but is a skin and eye irritant.
Level in humans n.a. but very low
Daily dietary intake: n.a. 
Total mass of element in average
[70 kg] person:
n.a. but very low


Geological data


MineralFormulaDensityHardnessCrystal apperance
Bastnäsite*  (La,Ce,etc.)CO3F 4.9  4 - 5.5  hex., vit./greasy yellow
Monazite*  (Ce, La, Nd, Th, etc.)PO4 5.20  5 - 5.5  mon., waxy/vit. yellow-brown

* Although not a major constituent, neodymium is present in extractable amounts.

Chief ores: monazite, bastnäsite
World production: 7300 tonnes/year
Producing areas: USA, Brazil, India, Sri Lanka, Australia
Reserves: c. 8 x 106 tonnes
Specimen: available as chips, or ingots. Safe. Neodymium is also available as powder but dust un the eye is an irritant. Care!


Sun: 17.0 (relative to H = 1 x 1012)
Earth's crust: 38 ppm
Atlantic surface: 1.8 x 10-6 ppm
Atlantic deep: 3.2 x 10-6  ppm
Pacific surface: 1.8 x 10-6  ppm
Pacific deep: 4.8 x 10-6  ppm
Residence time: 500 years
Classification: recycled
Oxidation state: III

  Source: Emsley, J. (1998) The Elements (3rd Edition)

Other sizes and specifications on request

Overview of elements with access to our shop

1 18
2 13 14 15 16 17
Li Be B C
Na Mg 3 4 5 6 7 8 9 10 11 12 Al Si P S
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se
Rb Sr Y Zr Nb Mo
Ru Rh Pd Ag Cd In Sn Sb Te I
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi
Ce Pr Nd
Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Get our latest news and special sales
You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.
Tel.: +49 (0) 2461 - 9352 - 0
Fax: +49 (0) 2461 - 9352 - 11