American Elements: Terbium Supplier & Technical Information

Terbium information, including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included.

Terbium is primarily used in phosphors, particularly in fluorescent lamps and as the high intensity green emitter used in projection televisions, such as the yttrium-aluminum-garnet (Tb:YAG) variety. Terbium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Terbium responds efficiently in x-ray excitation and is, therefore, used as an x-ray phosphor. Terbium alloys are also used in magneto-optic recording films, such as Tb-Fe-Co.

Terbium facts, including appearance, CAS #, and molecular formula and safety data, research and properties are

(click on an element)

available for many specific states, forms and shapes on the product pages listed to the left. Elemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes. Nanoparticles and nanopowders provide ultra high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits.

Oxides are available in forms including powders and dense pellets for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Terbium is available in soluble forms including chlorides, nitrates and acetates. These compounds are also manufactured as solutions at specified stoichiometries.

Terbium is a Block F, Group 3, Period 6 element. The electronic configuration is [Xe]4f⁹6s². In its elemental form terbium's CAS number is 7440-27-9. The terbium atom has a radius of 176.3.pm and it's Van der Waals radius is unknown.

All elemental metals, compounds and solutions may be synthesized in ultra high purity (e.g. 99.999%) for laboratory standards, advanced electronic, metallurgy and optical materials and other high technology advantages. Information is provided for stable (non-radioactive) isotopes. Organo-Metallic Terbium compounds are soluble in organic or non-aqueous solvents. See Analytical Services for information on available certified chemical and physical analysis techniques including MS-ICP, X-Ray Diffraction, PSD and Surface Area (BET) analysis.

Terbium was first discovered by Carl Mosander in 1843.

terbium

Terbium

terbio

Térbio

terbio

Terbium

Terbium Abundance. The following table shows the abundance of Terbium and each of its naturally occurring isotopes on Earth along with the atomic mass for each isotope.

Isotope	Atomic Mass	% Abundance on Earth
Tb-159	158.925	100

Terbium Safety Data. The safety data for Terbium metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin.

Ionization Energy. The ionization energy for Terbium (the least required energy to release a single electron from the atom in it's ground state in the gas phase) is stated in the following table:

1^st Ionization Energy	565.77 kJ mol^-1
2nd Ionization Energy	1111.52 kJ mol^-1
3rd Ionization Energy	2114.01 kJ mol^-1

Conductivity. As to Terbium's electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ºC is 116 µOcm and its electronegativities (or its ability to draw electrons relative to other elements) is non-detectable. The thermal conductivity of Terbium is 11.1 W m^-1 K^-1.

Thermal Properties of Terbium. The melting point and boiling point for Terbium are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.

Heat of Fusion	16.3 kJ mol^-1
Heat of Vaporization	391 kJ mol^-1
Heat of Atomization	390.62 kJ mol^-1

American Elements Products can also be sourced at these sites:




			electronics-ee.com