Frontiers in Physics (Dec 2021)

The Transport Properties of Quasi–One-Dimensional Ba3Co2O6(CO3)0.7

  • Minnan Chen,
  • Jiangtao Wu,
  • Qing Huang,
  • Jinlong Jiao,
  • Zhiling Dun,
  • Guohua Wang,
  • Zhiwei Chen,
  • Gaoting Lin,
  • Vasudevan Rathinam,
  • Cangjin Li,
  • Yanzhong Pei,
  • Feng Ye,
  • Haidong Zhou,
  • Jie Ma,
  • Jie Ma

DOI
https://doi.org/10.3389/fphy.2021.785801
Journal volume & issue
Vol. 9

Abstract

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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.

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