메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
Koichi Shigeno (Ube College National Institute of Technology) Haruka Nishijima (Kagawa College National Institute of Technology) Takeshi Souma (Kagawa College National Institute of Technology) Hirotaka Fujimori (Graduate School of Yamaguchi University)
저널정보
한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제24권 제1호
발행연도
2023.2
수록면
39 - 45 (7page)
DOI
https://doi.org/10.1007/s42341-022-00414-8

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
In this study, a single-phase quadruple perovskite oxide powder, Cu 3.21 Ti 1.16 Nb 2.63 O 12 , was synthesized, and the novel coexistence of Cu 2+ and Cu + was confirmed via X-ray photoelectron spectroscopy. We produced a dense, sintered body with a relative density of 96% by firing at 885 °C in air. The sintered body exhibited an electrical conductivity of 2.2 S/cm, a Seebeck coefficient of -280 μV/K, a thermal conductivity of 2.4 W/m K at 730 °C, and a relatively low dimensionless figure of merit ( ZT ) of approximately 0.006. The main reason for the low ZT was the low electrical conductivity, which was approximately 1/100 of that of Na 0.7 CoO 2 , which is a typical thermoelectrical oxide. However, the obtained ZT value was higher than that of similar CaCu 3 Ti 4 O 12 -based oxides, indicating the significant potential of the as-prepared perovskite oxide as a thermoelectric material. The electrical conductivity exhibited an Arrhenius-type temperature dependence above room temperature, and its activation energy was 0.1 eV, which was equivalent to that of CuO hopping conduction. This suggested that hopping conduction between Cu + and Cu 2+ plays a signifi cant role in the electrical conduction of this system. This study provides important insights for the development of new quadruple perovskite oxide thermoelectric materials.

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0