کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5459859 | 1516189 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimization of thermoelectric properties in layered Bi2Sr2Co2Oy via high-magnetic-field sintering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Optimization of thermoelectric properties in layered Bi2Sr2Co2Oy via high-magnetic-field sintering Optimization of thermoelectric properties in layered Bi2Sr2Co2Oy via high-magnetic-field sintering](/preview/png/5459859.png)
چکیده انگلیسی
Herein, we report the effect of the high-magnetic-field (HMF) sintering on the structural, electrical and thermal transport properties of the layered Bi2Sr2Co2Oy. Based on the results of x-ray diffraction and microtopography, we find the grains prefer to the oriented growth along the direction of applied magnetic field, leading to a higher textured degree and anisotropy. Correspondingly, the in-plane conductivity increases while the out-of-plane one reduces with increasing sintering magnetic field. At the same time, the in-plane thermopower shows an obvious enhancement after the HMF sintering, which mainly originates in the spin state transition of Co4+ ions. As a result, a remarkable enhancement of the in-plane thermoelectric figure-of-merit is obtained in the sample after the HMF sintering (8Â T).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 705, 25 May 2017, Pages 745-748
Journal: Journal of Alloys and Compounds - Volume 705, 25 May 2017, Pages 745-748
نویسندگان
Yanan Huang, Bangchuan Zhao, Shuai Lin, Yuping Sun,