http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Refinel (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Yulia Eka Putri,Suhana Mohd Said,Refinel Refinel,Michitaka Ohtaki,Syukri Syukri 대한금속·재료학회 2018 ELECTRONIC MATERIALS LETTERS Vol.14 No.5
The SrO(SrTiO3)1 (Sr2TiO4) Ruddlesden Popper (RP) phase is a natural superlattice comprising of alternately stackingperovskite-type SrTiO3layers and rock salt SrO layers along the crystallographic c direction. This paper discusses theproperties of the Sr2TiO4and (La, Sm)-doped Sr2TiO4RP phase synthesized via molten salt method, within the context ofthermoelectric applications. A good thermoelectric material requires high electrical conductivity, high Seebeck coefficientand low thermal conductivity. All three conditions have the potential to be fulfilled by the Sr2TiO4RP phase, in particular,the superlattice structure allows a higher degree of phonon scattering hence resulting in lowered thermal conductivity. In thiswork, the Sr2TiO4RP phase is doped with Sm and La respectively, which allows injection of charge carriers, modification ofits electronic structure for improvement of the Seebeck coefficient, and most significantly, reduction of thermal conductivity. The particles with submicron size allows excessive phonon scattering along the boundaries, thus reduces the thermalconductivity by fourfold. In particular, the Sm-doped sample exhibited even lower lattice thermal conductivity, which isbelieved to be due to the mismatch in the ionic radius of Sr and Sm. This finding is useful as a strategy to reduce thermalconductivity of Sr2TiO4RP phase materials as thermoelectric candidates, by employing dopants of differing ionic radius.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
