SrB4O7 ∶ Sm2+: crystal chemistry, Czochralski growth and optical hole burning

Growth of transparent SrB4O7 single crystal and its new applications

“…6 illustrates the fluorescence spectra from 625 to 690 nm at 300 K of crystal, polycrystal and glass samples. The broad band 4 Ga 5/2 -6 H 9/2 transitions near 650 nm belongs to trivalent samarium, and the narrow line near 685 nm can be attributed to the 5 D 0 -7 F 0 transitions of divalent samarium [10]. From this result, it may be considered that Sm 3+ exists predominantly in a glass state and Sm 2+ mainly in crystal and polycrystal, whereas Sm 3+ and Sm 2+ coexist in Sm:SBO ceramics prepared in air under the melting point [10].…”

“…After studying the growth of the Sm 2+ :SBO crystal, we determined that the precise pressure choice is possible if crystal is used instead of polycrystal. P Mikhail et al [10] reported the growth of Sm:SBO single crystals using the Cz method. However, they did not investigate the application of grown crystal to a pressure gauge.…”

On the Crystal Chemistry and Stability of Sm2+ in SmSO4 and Solid Solutions of M1−xSmxSO4 (M=Ba, Sr)

“…On the contrary, in the case of the two borates reported so far (17,18), no oxidation can take place through reduction of anionic species. Furthermore, it is not only the in#uence of size and temperature which may preclude the existence of Sm> in solid solutions, reduction of cations (e.g., Pb>, Cd>) could also work against compound formation.…”

Zeolitic Tissue Through Wood Cell Templating

“…[1] However, the diffusion rate of the guest species in practical applications is usually limited by the existence of the micropores, especially in reactions involving large molecules. [3] Although various strategies have been proposed to design their porous structure, template-directed synthesis is currently the most widely used method on account of its versatility. [2±7] Such porous zeolites are expected to be of great technological importance, since they combine the advantages of each poresize regime.…”

“…[2±7] Such porous zeolites are expected to be of great technological importance, since they combine the advantages of each poresize regime. A variety of templates, including latex particles, [3] polyurethane foams, [4] ionexchange resins, [5] and carbon fibers [6] have been employed to date, resulting in a number of hierarchical porous materials involving zeolitic structures, including monoliths, [3] foams, [4] beads, [5] hollow fibers, [6] and spheres. [3±7] In a typical procedure, zeolite nanoparticles or their precursors are assembled around the skeleton of a template to form the composite, and the porous zeolite is produced upon the removal of the template.…”