X-Ray Diffraction Studies of Systems Involved in the Preparation of Alkaline Earth Sulfide and Selenide Phosphors¹

X-Ray Absorption Spectroscopy of Strontium(II) Coordination

“…Strontium oxide (SrO(s)) is a well-ordered solid with a cubic halite structure in which strontium has six first-neighbor oxygen atoms at 2.570Å and a second shell of strontium atoms at 3.634Å (25). Including the C 3 term resulted in small differences in the fits at all three temperatures relative to the Sr-O distance determined from XRD (Table 1).…”

“…d Amplitude reduction factor (S 2 0 ) was estimated at 10 K and fixed at higher temperatures. e SrO(s): Primak et al (25). f Increase in bond length from hydration and unit cell expansion.…”

“…In two of the compounds (SrO(s)), examined above, and strontium titanate (SrTiO 3 (s)), the crystal structures are cubic at room temperature and the strontium site is highly symmetric (25,28,29). In SrO(s), strontium is 6-coordinated and the Sr-O bond length is 2.570Å.…”

Modeling the Thermal Decomposition of Solids on the Basis of Lattice Energy Changes

“…The crystal structures (16)(17)(18)(19) of MgO, CaO, SrO, and BaO belong to the face-centered cubic system. Crystal data are given in Table 1.…”

Synthesis of the (Sr,Ca)2AlH7 hydride

“…6. For the Rietveld refinement, the structure models for the phases Sr 2 AlH 7 , SrH 2 , Al and SrO were taken from the reported structures [8,[14][15][16]. As shown in Fig.…”