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Advanced Materials Information Center | Neodymium Products

PROPERTIES OF NEODYMIUM

Melting Point	1024蚓
Boiling Point	3027蚓
Density	7.00 g/cm3
Crystal Structure	dhcp
Metallic Radius	182 pm
Valency	3
Magnetic Moment	3.62湎

APPLICATIONS OF NEODYMIUM

After cerium and lanthanum, neodymium is the most abundant of the rare earths. It shows similiar charteristics to the other trivalent lanthanides.

Primary applications include lasers, glass coloring and tinting, dielectrics and, most importantly, as the fundemental basis for neodymium-iron-boron (Nd2Fe14B) permanent magnets.

The neodymium-based magnet was first introduced in 1982 simultaneously by Sumitomo Specialty Metals (Japan) and General Motors (USA) and commercialized in 1986. It is used extensively in the automotive industry with many applications including starter motors, brake systems, seat adjusters and car stereo speakers. Its largest application is in the voice coil motors used in computer disk drives. Other uses include medical magnetic imaging equipment.

Neodymium has a strong absorption band centered at 580 nm, which is very close to the human eye's maximum level of sensitivity making it useful in protective lenses for welding goggles. It is also used in CRT displays to enhance contrast between reds and greens. It is highly valued in glass manufacturing for its attractive purple coloring to glass.

Neodymium is included in many formulations of barium titanate, used as dielectric coatings and in multi-layer capacitors essential to electronic equipment.

Ytrrium-aluminum-garnet (YAG) solid state lasers utilize neodymium because it has optimal absorption and emitting wavelengths. Nd-based YAG lasers are used in various medical applications, drilling, welding and material processing.

RECENT NEODYMIUM RESEARCH

1. Rao GSS, Upadhyay VK, Jain RC

Polymerization of 13-butadiene using neodymium chloride tripentanolate triethyl

aluminum catalyst systems

J APPL POLYM SCI 71: (4) 595-602 JAN 24 1999

2. Glas P, Naumann M, Schirrmacher A, et al.

Short-length 10-W cw neodymium-doped M-profile fiber laser

APPL OPTICS 37: (37) 8434-8437 DEC 20 1998

3. Mague JT, Apblett AW, Walker EH

Metal alkoxycarboxylate complexes. 1. Poly[aquabis(methoxyacetato) (nitrato)

neodymiumIII]

ACTA CRYSTALLOGR C 54:1588-1590 Part I I NOV 15 1998

4. Bodrova VS, Piskareva EP, Shelokhneva LF, et al.

Polymerization of isoprene with a neodymium chloride-based homogeneous catalyst

VYSOKOMOL SOEDIN 40: (11) 1741-1749 NOV 1998

5. Campazzi E, Solari E, Floriani C, et al.

The fixation and reduction of dinitrogen using lanthanides: praseodymium and

neodymium meso-octaethylporphyrinogen-dinitrogen complexes

CHEM COMMUN (23) 2603-2604 DEC 7 1998

6. Dogra PN, Aron M, Rajeev TP

Core through urethrotomy with the neodymium : YAG laser for posttraumatic

obliterative strictures of the bulbomembranous urethra

J UROLOGY 161: (1) 81-84 JAN 1999

7. Clark DS, Munsell MF, Emery JM

Mathematical model to predict the need for neodymium: YAG capsulotomy based on

posterior capsule opacification rate

J CATARACT REFR SURG 24: (12) 1621-1625 DEC 1998

8. Nensala N, Nyokong T

Photoassisted reduction of thionyl chloride bv neodymium, europium, thulium and

lutetitim diphthalocyanines

POLYHEDRON 17: (19) 3467-3475 1998

9. Jeandel C, Thouron D, Fieux M

Concentrations and isotopic compositions of neodymium in the eastern Indian Ocean

and Indonesian straits

GEOCHIM COSMOCHIM AC 62: (15) 2597-2607 AUG 1998

10. Luttinen AV, Ramo OT, Huhma H

Neodymium and strontium isotopic and trace element compositions from Dronning Maud Land, Antarctica: Implications for lithosphere and asthenoshere contributions to Karoo magmatism

GEOCHIM COSMOCHIM AC 62: (15) 2701-2714 AUG 1998