Electronic phase engineering induced thermoelectric enhancement in manganites
Year: 2018
Type: article
Abstract: The nano-structuring engineering and the introduction of magnetic scattering are effective ways to enhance the thermoelectric performance. In this work, we use the magnetic treatments on La0.4Pr0.225Ca0.375MnO3 to demonstrate that the electronic phase engineering can enhance the thermoelectric performance by simultaneously reducing the thermal conductivity and raising the power factor in a strongly correlated electron system. This study indicates that the magnetic treatment changes the phase separation state and impedes the growth of ferromagnetic metal (FMM) phase. The reduction of FMM phase suppresses the bipolar effect, which raises the Seebeck coefficient and the power factor, reduces the thermal conductivity, and therefore enhances the thermoelectric performance.
Source: Journal of Applied Physics
DOI: 10.1063/1.5026868
Authors: Ping Jia, Yinlong Wang, Zhibo Yan, Jijun Gong, Lin Lin, Feng Gao, J.-M. Liu
Institutions: Nanjing University, Linköping University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: 第II类多铁性体薄膜与异质结的制备及物性研究, G5559086641
OpenAlex ID: W2883411817