Applied Physics A

, Volume 111, Issue 2, pp 465–470

Low temperature thermoelectric properties of Cu intercalated TiSe2: a charge density wave material

  • Ranu Bhatt
  • Ranita Basu
  • S. Bhattacharya
  • A. Singh
  • D. K. Aswal
  • S. K. Gupta
  • G. S. Okram
  • V. Ganesan
  • D. Venkateshwarlu
  • C. Surgers
  • M. Navaneethan
  • Y. Hayakawa
Rapid communication

DOI: 10.1007/s00339-012-7536-8

Cite this article as:
Bhatt, R., Basu, R., Bhattacharya, S. et al. Appl. Phys. A (2013) 111: 465. doi:10.1007/s00339-012-7536-8

Abstract

In this communication, we investigate the thermoelectric properties of a charge density wave material TiSe2 upon Cu intercalation. Polycrystalline CuxTiSe2 (x=0–0.11) alloys were synthesized using solid state sintering process and their morphological and structural properties were investigated. The material grows in layered morphology and the c-lattice parameter increases linearly with x. The temperature dependent resistivity measured in the 300–5 K range, shows that increasing x leads to a systematic transition from charge density wave state to the metallic state. For x=0.11, the room temperature thermoelectric figure-of-merit is found to be 0.104, which is higher by seven orders in magnitude (i.e. 1.93×10−8) measured for pristine TiSe2 and comparable to the other reported thermoelectric materials. These results show that CuxTiSe2 are a potential material for the low temperature thermoelectric applications.

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Ranu Bhatt
    • 1
  • Ranita Basu
    • 1
  • S. Bhattacharya
    • 1
  • A. Singh
    • 1
  • D. K. Aswal
    • 1
  • S. K. Gupta
    • 1
  • G. S. Okram
    • 2
  • V. Ganesan
    • 2
  • D. Venkateshwarlu
    • 2
  • C. Surgers
    • 3
  • M. Navaneethan
    • 4
  • Y. Hayakawa
    • 4
  1. 1.Technical Physics DivisionBhabha Atomic Research CenterMumbaiIndia
  2. 2.UGC-DAE Consortium for Scientific ResearchIndoreIndia
  3. 3.Physikalisches InstituteUniversitat KarlsruheKarlsruheGermany
  4. 4.National University CorporationShizuoka UniversityHamamatsuJapan