Author:
Chen Minnan,Wu Jiangtao,Huang Qing,Jiao Jinlong,Dun Zhiling,Wang Guohua,Chen Zhiwei,Lin Gaoting,Rathinam Vasudevan,Li Cangjin,Pei Yanzhong,Ye Feng,Zhou Haidong,Ma Jie
Abstract
We have performed combined elastic neutron diffuse, electrical transport, specific heat, and thermal conductivity measurements on the quasi–one-dimensional Ba3Co2O6(CO3)0.7 single crystal to characterize its transport properties. A modulated superstructure of polyatomic CO32− is formed, which not only interferes the electronic properties of this compound, but also reduces the thermal conductivity along the c-axis. Furthermore, a large magnetic entropy is observed to be contributed to the heat conduction. Our investigations reveal the influence of both structural and magnetic effects on its transport properties and suggest a theoretical improvement on the thermoelectric materials by building up superlattice with conducting ionic group.
Funder
National Key Research and Development Program of China
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics,Materials Science (miscellaneous),Biophysics