Dysprosium (Dy)

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Dysprosium single crystal 66Dy162.50

1886 von Paul-Emile Lecoq de Boisbaudran in Paris, Frankreich, entdeckt.

[Greek: dysprositos = mühsam erhältlich]
  French: dysprosium
  German: dysprosium
  Italian: disprosio
  Spanish: disprosio

Beschreibung: Reaktives, hartes, silberglänzendes Metall aus der Gruppe der Lanthanoide. Wird von Sauerstoff oxidiert, reagiert schnell mit Wasser, löst sich in Säuren. Verwendet in Legierungen für magnetische Werstoffe.

Dysprosium single crystal properties


State: Single crystal
Crystal structure: hexagonal
Production method: Floating zone
Standard size: diameter 7-8mm
thickness 1mm
Orientation: (0001)
Orientation accuracy: <2°, <1°, <0.4° or <0.1°
Polishing: as cut, one or two sides polished
Roughness of surface: <0.03 µm
Purity: 99.99%



Further Materials properties


Crystal structure: (cell dimensions/pm), space group,
Orthorombic (a=359.5, b=618.3, c=567.7), Cmcm
h.c.p. (a=359.03, c=564.75), P63/mmc
b.c.c. (a=398), Im3m
T(orthorhombic -> h.c.p.) = 86 K
high pressure form: (a=334, c=245), R3m
X-ray diffractions mass absorption coefficients: CuKa 286 (µ/r) / cm2g-1
MoKa 70.6 (µ/r) / cm2g-1
Neutron scattering length: 1.69 b/10-12 cm
Thermal neutron capture cross-section: 920 sa / barns
Density: 8.54 kg/m-3 [293 K]; 2390 [liquid at m.p.]
Melting point: 1411.85 °C / 1685 °K
Boiling point: 2561.85 °C / 2835 °K
Molar volume: 19.00 cm3
Thermal conductivity: 10.7 [300 K] Wm-1K-1
Coefficient of linear thermal expansion: 10.0 x 10-6 K-1
Electrical resistivity: 57.0x10-8 [293 K] Wm
Mass magnetic susceptibility: +8.00 x 10-6(s) kg-1m3
Young's modulus: 61.4 GPa
Rigidity modulus: 24.7 GPa
Bulk modulus: 40.5 GPa
Poisson's ratio: 0.247 GPa
Radi: Dy3+ 91; atomic 177; covalent 159
Electronegativity: 1.22 (Pauling); 1.10 (Allred); n.a. (absolute)
Effective nuclear charge: 2.85 (Slater); 8.34 (Clementi); 11.49 (Froese-Fischer)
Number of Isotopes (incl. nuclear isomers): 24
Isotope mass range: 147 -> 168



Biological data


Biological role: none
Toxicity low
Toxic intake: n.a.
Lethal intake: LD50 (Chloride, oral, mouse)=7650 mg kg-1
Hazards: Dysprosium is midly toxic by ingestion.
Level in humans  
Blood: 0.39 mg dm-3
Organs: n.a. but low
Daily dietary intake: n.a.
Total mass of element in average
[70 kg] person:


Geological data


Minerals:Many minerals are known, and aluminium is present in many other minerals
MineralFormulaDensityHardnessCrystal apperance
Bastnäsite  (Ce, La etc.) Co3F  4.9  4 - 4.5  hex., vit./greasy yellow
Monazite  (Ce, La, Nd, Th etc.) PO4  5.20  5 - 5.5  mon., waxy/vit., yellow-brown


Chief ore: monazite, bastnäsite
World production: c. 100 tonnes/year
Main mining areas: USA, Brazil, India, Sri Lanka, Australia
Reserves: 1.5 x 105 tonnes
Specimen: available as chips, foil, ingots or powder. Safe.


Sun: 11.5 x 106 (relative to H = 1 x 1012)
Earth's crust: 6 ppm
Atlantic surface: 8 x 10-7 ppm
Atlantic deep: 9.6 x 10-7 ppm
Pacific surface: n.a.
Pacific deep: n.a.
Residence time: 300 years
Classification: recycled
Oxidation state: III


Other sizes and specifications on request

Übersicht der Elemente mit Zugang zu unserem 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

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