Thermoelectric Properties in Spark Plasma Sintered La0.7Sr0.3Mn0.5Co0.5O3

被引：4
|
作者：
Kumar, Ashutosh [1 ]
Kumari, Karuna [1 ]
Sivaprahasam, D. [2 ]
Thakur, Ajay D. [1 ]
机构：
[1] Indian Inst Technol Patna, Dept Phys, Bihta 801106, India
[2] ARCI, Ctr Automot Energy Mat, IITM Res Pk, Chennai 600133, Tamil Nadu, India
来源：
3RD INTERNATIONAL CONFERENCE ON CONDENSED MATTER & APPLIED PHYSICS (ICC-2019) | 2020年 / 2220卷
关键词：
SPIN-STATE TRANSITION;
D O I：
10.1063/5.0001334
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
LaCoO3 shows interesting thermoelectric properties due to the existence of different charge states along with different spin states of cobalt in the system. Substitution at La and Co site leads to tune the electrical conductivity and hence Seebeck coefficient. We show that spark plasma sintered (SPS) La0.7Sr0.3Mn0.5Co0.5O3 sample shows an increase in the value of electrical conductivity at higher temperature with nominal decrease in the Seebeck coefficient. This improves the figure of merit for La0.7Sr0.3Mn0.5Co0.5O3 polycrystalline sample at 800 K. The maximum figure of merit for SPS La0.7Sr0.3Mn0.5Co0.5O3 is 0.006 at 800 K.
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页数：4
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