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Home Materials Gadolinium , Gd
64 157.250
Gd
Gadolinium

Gadolinium , Gd

Gadolinium is a chemical element that has the symbol Gd and atomic number 64.

Gadolinium is a silvery-white, malleable and ductile rare-earth metal with a metallic lustre. It crystallizes in hexagonal, close-packed alpha form at room temperature, but, when heated to 1508 K or more, it transforms into its beta form, which has a body-centred cubic structure.

 

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G1-5002-M

Gd Pieces <10mm TREM 99.5% Gd/TREM: 99.95%

Gadolinium Packed under Argon

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G1-5003-M

GdF3 Pieces 3-6mm (melted) 99.9% Pure

Gadolinium Fluoride

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G1-5004-M

Gd3Ga5O12 Pieces 3-12mm (melted) 99.9% Pure

Gadolinium Gallium Oxide

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G1-5005-M

Gd2O3 Pieces 3-12mm (sintered) 99.9% Pure

Gadolinium Oxide

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G1-5011-M

Gd Pieces 1-6mm Gd/TREM: 99.99% TREM 99.5%

Gadolinium

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G1-5014-M

Gd2O3 Pieces 1-6mm (sintered) 99.99% Pure

Gadolinium Oxide

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G1-10002-P

GdCl3-xH2O -4 Mesh 99.9% Pure

Gadolinium Chloride

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G1-10003-P

GdCl3 -20 Mesh 99.9% Pure

Gadolinium Chloride

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G1-10004-P

GdF3 -60 Mesh (melted) 99.9% Pure

Gadolinium Fluoride

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G1-10005-P

GdF3 -325 Mesh (precipitated)

Gadolinium Fluoride

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G1-10008-P

GdN -60 Mesh 99.9% Pure

Gadolinium Nitride

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G1-10009-P

Gd2O3 Powder -325 Mesh (typ. =5 microns) 99.999% Pure

Gadolinium oxide

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G1-10010-P

Gd2O3 Powder-325 Mesh (typ. =5 microns) 99.9% Pure

Gadolinium Oxide

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G1-10011-P

Gd2S3 -200 Mesh 99.9% Pure

Gadolinium Sulphide UN3178 4.1 PG III

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G1-10012-P

Gd2Te3 -20 Mesh 99.9% Pure

Gadolinium Telluride UN3178 4.1 PG III

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G1-10014-P

Gd2O3 5 microns 98% Pure

Gadolinium Oxide

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G1-10015-P

Gd2O3 -325 Powder Mesh 99.5% Pure

Gadolinium Oxide

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G1-10016-P

Gd2O3 Powder TREM 99.9% TREO 99% Pure

Gadolinium Oxide

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G1-10017-P

GdF3 Powder -325 Mesh (typ. =5 microns) 99.9% Pure

Gadolinium fluoride

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G1-2000-R

Gd Rod 6.35mm diameter 99.9% pure

Gadolinium

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G1-2000-R1

Gd Rods 4.9mm dia. +/- 0.05mm x 10mm long 99.99% Pure

Gadolinium

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G1-2000-R2

Gd Rod 3mm dia. x 130mm long TREM 99.5% Gd/TREM 99.9%

Gadolinium

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G1-2001-R

Gd Rod 12.7mm diameter 99.9% pure

Gadolinium

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G1-1000-W1

Gd Wire 1mm dia 99.9% Pure

Gadolinium

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G1-9000-D
Gadolinium Gd, TREM 99.5%, Gd/TREM 99.9%
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G1-9000-Dx

Gadolinium Gd, TREM 99.5%, Gd/TREM 99.99%

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G1-9000-Dxx

Gadolinium Gd, TREM 99.5%, Gd/TREM 99.95%

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G1-9001-D

Gadolinium oxide Gd2O3,

Purity 99.9% & 99.99%

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G1-9002-D

Gadolinium Scandium oxide GdScO3,

Purity 99.95%

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G1-9003-D

Gadolinium Zirconium oxide Gd2Zr2O7,

Purity 99.99%

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G1-9004-D

Gadolinium Iron oxide Gd3Fe5012,

Purity 99.95%

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G1-9005-D

Gadolinium Gallium oxide doped Neodymium Gd3Ga5O12-Nd 1at%,

Purity 99.9%

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G1-9005-D

Gadolinium Gallium oxide Gd3Ga5O12,

Purity 99.9%

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G1-9005-D

Gadolinium Gallium oxide Gd3Ga5O12,

Purity 99.9%

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G1-9006-D

Gadolinium-Iron-Cobalt GdFeCo,

Available in various ratios wt% or at%, Purity 99.9%

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G1-9008-D

Gadolinium-Barium-Copper oxide GdBa2Cu307,

Purity 99.9%

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G1-9008-Dx

Gadolinium-Barium-Copper oxide doped with Barium Hafnium oxide

GdBa2Cu307 BaHfO3,

Available in various ratios wt% or at%, Purity 99.9%

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G1-9009-D

Gadolinium-Iron GdFe

Available in various ratios wt% or at%, Purity 99.9%

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G1-9010-D001

Gadolinium Nitride GdN Purity 99%+

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G1-9011-D001

Gadolinium oxide-Cerium oxide Gd2O3-CeO2,

Available in various ratios wt% or at%, Purity 99.99%

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G1-9013-D001

Gadolinium-Cerium GdCe,

Available in various ratios wt% or at%, Purity 99.9%

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GD-F-0.1

Gd Foil Thickness 0.1mm (0.004") Purity 99.9% 

Gadolinium

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GD-F-0.2

Gd Foil Thickness 0.2mm (0.008") Purity 99.9% 

Gadolinium

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G1-9001-D3

Gd2O3 TRG 101.6mm dia. x 6mm Tk 99.99% Pure

Gadolinium oxide

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G1-9001-D7

Gd2O3 TRG 76.2mm dia. x 3.18mm Tk 99.99% Pure

Gadolinium oxide

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G1-9001-D8

Gd2O3 TRG 76mm dia. x 5mm Tk 99.95% Pure

Gadolinium oxide

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G1-9010-D1

GdN 25 TRG 4mm dia. x 3.18mm Tk 99% Pure

Gadolinium Nitride

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GD-ST-2-3-3N5

Gd TRG 50.8mm dia. x 3mm tk Purity TREM 99.5%; Gd/TREM 99.95%

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GD-ST-2-6-3N5

Gd TRG 50.8mm dia. x 6mm tk Purity TREM 99.5%; Gd/TREM 99.95%

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GD-ST-3-3-3N5

Gd TRG 76.2mm dia. x 3mm tk Purity TREM 99.5%; Gd/TREM 99.95%

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GD-ST-3-6-3N5

Gd TRG 76.2mm dia. x 6mm tk Purity TREM 99.5%; Gd/TREM 99.95%

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GD-ST-4-3-3N5

Gd TRG 101.6mm dia. x 3mm tk Purity TREM 99.5%; Gd/TREM 99.95%

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CRY-GdScO3

Gadolinium scandium(GdScO3) single crystal

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CRY-GGG

Gadolinium gallium garnet (GGG) Single Crystal Substrate

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CRY-GSGG

Sc-doped gadolinium gallium garnet (GSGG) crystal 

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Unlike other rare earth elements, gadolinium is relatively stable in dry air. However, it tarnishes quickly in moist air and forms a loosely-adhering oxide that spalls off, and then exposes more surface to oxidation. Gadolinium reacts slowly with water, and it is soluble in dilute acids.

Gadolinium-157 has the highest thermal neutron capture cross-section of any known nuclide with the exception of Xenon-135, 49,000 barns, but it also has a fast burn-out rate, limiting its usefulness as a nuclear control rod material.

Gadolinium becomes superconductive below a critical temperature of 1.083 K. It is strongly paramagnetic at room temperature, and exhibits ferromagnetic properties below room temperature.

Gadolinium demonstrates a magnetocaloric effect whereby its temperature increases when it enters a magnetic field and decreases when it leaves the magnetic field. The effect is considerably stronger for the gadolinium alloy Gd<sub>5</sub>(Si<sub>2</sub>Ge<sub>2</sub>).

Symbol Gd
Atomic number 64
No. of naturally occurring isotopes 7
Atomic weight 157.25 (+/-3)
Outer electron configuration 4f7d46s2
Metal radius(6-coordinate)/pm 180.4
Ionic radius(6-coordinate)/pm III 93.8
Ionic radius(6-coordinate)/pm II -
Electrical resistivity -
(25°C)/μohm cm 134
Density (20°C)/gcm-3 7.886
Melting point /°C 1312
Boiling point /°C -3000
ΔHvap/kJmol-1 301
ΔHf(monoatomic gas/kJmol-1 398
ΔH(hydration Ln3+)/kJmol-1 3571
Ionization energy/kJ mol-1 I 595
Ionization energy/kJmol-1 II 1172
Ionization energy/kJmol-1 III 1999
Temperature (oC) @Vap. Pressure
10-8 Torr 760
10-6 Torr 900
10-4 Torr 1175
Techniques
Electron Beam Excellent
Crucible Al2O3
Coil -
Boat Tantalum
Remarks
High Tantalum solubility.