TERBIUM.

Elastic properties of terbium.

Sodium terbium(III) polyphosphate

Single crystals of the title compound, NaTb(PO(3))(4), were obtained by solid-state reaction. This compound belongs to type II of long-chain polyphosphates with the general formula A(I)B(III)(PO(3))(4). It is isotypic with the NaNd(PO(3))(4) and NaEr(PO(3))(4) homologues. The crystal structure is built up of infinite crenelated chains of corner-sharing PO(4) tetra-hedra with a repeating unit of...

Terbium-based extreme ultraviolet multilayers.

We have fabricated periodic multilayers that comprise either Si/Tb or SiC/Tb bilayers, designed to operate as narrowband reflective coatings near 60 nm wavelength in the extreme ultraviolet (EUV). We find peak reflectance values in excess of 20% near normal incidence. The spectral bandpass of the best Si/Tb multilayer was measured to be 6.5 nm full width at half-maximum (FWHM), while SiC/Tb mul...

Terbium(III) hydrogendiphosphate(V) tetra­hydrate

The Tb atom of the title compound, TbHP(2)O(7)·4H(2)O, is coordinated by the O atoms of three symmetrically independent water mol-ecules and by five O atoms belonging to HP(2)O(7) (-) groups. The TbO(8) polyhedra are inter-connected by the diphospate anions, forming a three-dimensional network which is additionally stabilized by O-H⋯O hydrogen bonding between water mol-ecules and O atoms of the...

Density of Molten Terbium Chloride

Anhydrous (99.99%) TbCl3 was obtained from Aldrich (Milwaukee, WI, USA) and used without further purifications. It was handled in an argon-filled dry box with a water content < 2 ppm and an oxygen content < 1 ppm. A 166Ho radiation source (2.27 MBq) was used because of its desirable decay characteristics (t1/2 = 1200y, up to 8 photons per disintegration, more than 10% branching ratio). A multi-...