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- W2989571823 abstract "A short range structure investigation of halide glasses (MnF_2)x(BaCl_2)_(100-x)(x = 65, 60, 55) has been made using the extended X-ray absorption fine structure (EXAFS) and the wide angle X-ray scattering (WAXS) techniques. The local structure information around the Mn is derived from the study of the MnK absorption edge EXAFS and the X-ray scattering intensity of the materials, respectively. The results show that the F and Cl atoms in the first neighbour shell of the Mn atom construct a octahedra (MnCl_2F_4) with the bond-length r_(Mn-Cl) = 0.246 nm and r_(Mn-F)= 0.200 nm in the glass of x = 65, which share the atom F with the neighbouring one to form zigzag chains linked by Ba atoms distributed between them. With decreasing of the amount of MnF2 below x = 65, the bond-length r_(Mn-Cl) and the Debye-Waller factor σ_(Mn-Cl)~2 of Mn-Cl increase, and that of Mn-F is almost invariant. The disappearance of the Mn-Mn peak has been found from x = 60 to x = 55 with an abrupt increase in σ_(Mn-Cl) and s_(Mn-Cl)~2, which can be explained as the chains being broken to form the solitude octahc-dra (MnCl_2F4)." @default.
- W2989571823 created "2019-12-05" @default.
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- W2989571823 date "1988-01-01" @default.
- W2989571823 modified "2023-09-25" @default.
- W2989571823 title "STRUCTURE INVESTIGATIONS ON HALIDE GLASSES (MnF2)x(BaCl2)100-x WITH THE EXAFS AND WAXS TECHNIQUES" @default.
- W2989571823 doi "https://doi.org/10.7498/aps.37.49" @default.
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