کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10632766 | 992438 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and electrical properties of ordered perovskite oxide Cd3âxâyCuxAyTeO6 (A = Li, Na; 0.00 â¤Â x, y â¤Â 0.15)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Polycrystalline Cd3âxâyCuxAyTeO6 (AÂ =Â Li, Na) samples were prepared by solid-state reaction, and their crystal structure and electrical properties were investigated. In Cd3âxCuxTeO6 and Cd3âyAyTeO6 (AÂ =Â Li, Na), the maxim solubility of x and y was 0.15 and 0.15 for AÂ =Â Li, 0.05 for AÂ =Â Na, respectively. For co-substituted samples Cd2.9âyCu0.1LiyTeO6 and Cd2.9âyCu0.1NayTeO6, the maxim solubility of x was the same as single substitution above-mentioned. The alkali-metal substituted samples Cd3âyAyTeO6 (AÂ =Â Li, Na) showed a negative Seebeck coefficient, which indicates that the major conduction carriers are electron. On the other hand, the co-substituted samples Cd2.9âyCu0.1AyTeO6 (AÂ =Â Li, Na) represented a positive Seebeck coefficient, and major conduction carriers were hole through substitution by copper ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 40, Issue 7, 12 July 2005, Pages 1223-1232
Journal: Materials Research Bulletin - Volume 40, Issue 7, 12 July 2005, Pages 1223-1232
نویسندگان
Hiroyuki Tetsuka, Yue Jin Shan, Keitaro Tezuka, Hideo Imoto,