کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1333286 979072 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lithium conductivity in an Li-bearing double-ring silicate mineral, sogdianite
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Lithium conductivity in an Li-bearing double-ring silicate mineral, sogdianite
چکیده انگلیسی

The crystal structure of an Li-bearing double-ring silicate mineral, sogdianite ((Zr1.18Fe3+0.55Ti0.24Al0.03)(ϒ1.64,Na0.36)K0.85[Li3Si12O30], P6/mcc, a≈10.06 Å, c≈14.30 Å, Z=2), was investigated by neutron powder diffraction from 300 up to 1273 K. Rietveld refinements of displacement parameters revealed high anisotropic Li motions perpendicular to the crystallographic c-axis, indicating an exchange process between tetrahedral T2 and octahedral A sites. AC impedance spectra of a sogdianite single crystal (0.04×0.09×0.25 cm3) show that the material is an ionic conductor with conductivity values of σ=4.1×10−5 S cm−1 at 923 K and 1.2×10−3 S cm−1 at 1219 K perpendicular to the c-axis, involving two relaxation processes with activation energies of 1.26(3) and 1.08(3) eV, respectively.

Structure of sogdianite with atomic displacement parameter (ADP) ellipsoids at 1273 K.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 180, Issue 4, April 2007, Pages 1306–1317
نویسندگان
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