کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1492641 992400 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strontium ordering, structural modulation in layered hexagonal SrxCoO2 and physical properties of Sr0.35CoO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Strontium ordering, structural modulation in layered hexagonal SrxCoO2 and physical properties of Sr0.35CoO2
چکیده انگلیسی

Layered Sr0.35CoO2 has been synthesized by means of an ion exchange reaction from Na0.7CoO2. Resistivity measurements show that this material can be either metallic or semiconducting depending on the annealing conditions. The magnetic susceptibility of the sample increases with decreasing temperature, showing a Curie–Weiss behavior in high temperatures. Transmission electron microscopy observations reveal the presence of two superstructures arising respectively from the intercalated Sr-ordering (a compositional modulation) with q1 = a*/3 + b*/3 and a periodic structural distortion (a transverse structural modulation) with q2 = a*/2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 42, Issue 1, 18 January 2007, Pages 94–101
نویسندگان
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