Investigation on microstructure and electrical properties of Bi doping Ca3Co4O9 nanoparticles synthesized by sol-gel process

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    In this study, nanoparticles of Bi doped Ca3-xCo4O9 [Ca3-xBixCo4O9 where x=0, 0.2, 0.4 and 0.6] were prepared by sol gel combustion method. The phase structures and microstructures of Bi doped Ca3-xCo4O9 powders preparation were investigated. The microstructural observations of different Bi doped Ca3-xCo4O9 powders were evaluated using X-ray diffraction analysis (XRD) and Variable Pressure Scanning Electron Microscope (VPSEM). The bulk Ca3-xBixCo4O9 samples were fabricated using uniaxial cold pressing technique. Electrical resistivity of bulk Ca3-xBixCo4O9 samples with different doping was measured using four-probe method from 300 to 700°K. The electrical resistivity was found to decrease with increasing temperature for the bulk Ca3-xBixCo4O9 samples. The electrical properties of Ca3-xBixCo4O9 are non-monotonic functions of x.


  • Keywords

    Thermolectric; Calcium cobalt oxide; Electrical resistivity; Sol–gel; starch; Combustion; Nano-particles.

  • References

      [1] S. Jantrasee, P. Moontragoon, and S. Pinitsoontorn, "Thermoelectric properties of Al-doped ZnO: experiment and simulation," Journal of Semiconductors, vol. 37, no. 9, p. 092002, 2016.

      [2] I. Terasaki, Y. Sasago, and K. Uchinokura, "Large thermoelectric power in NaCo 2 O 4 single crystals," Physical Review B, vol. 56, no. 20, p. R12685, 1997.

      [3] Y. Park, K. Cho, and S. Kim, "Thermoelectric characteristics of glass fibers coated with ZnO and Al-doped ZnO," Materials Research Bulletin, 2017.

      [4] S. Butt et al., "Enhancement of thermoelectric performance in Cd-doped Ca 3 Co 4 O 9 via spin entropy, defect chemistry and phonon scattering," Journal of Materials Chemistry A, vol. 2, no. 45, pp. 19479-19487, 2014.

      [5] S. Pinitsoontorn, N. Lerssongkram, A. Harnwunggmoung, K. Kurosaki, and S. Yamanaka, "Synthesis, mechanical and magnetic properties of transition metals-doped Ca 3 Co 3.8 M 0.2 O 9," Journal of Alloys and Compounds, vol. 503, no. 2, pp. 431-435, 2010.

      [6] S. Katsuyama, Y. Takiguchi, and M. Ito, "Synthesis of Ca3Co4O9 ceramics by polymerized complex and hydrothermal hot-pressing processes and the investigation of its thermoelectric properties," Journal of Materials Science, vol. 43, no. 10, pp. 3553-3559, 2008.

      [7] Y. F. Zhang, J. X. Zhang, Q. M. Lu, and Q. Y. Zhang, "Synthesis and characterization of Ca 3 Co 4 O 9 nanoparticles by citrate sol-gel method," Materials Letters, vol. 60, no. 20, pp. 2443-2446, 2006.

      [8] D. Li, X. Qin, Y. Gu, and J. Zhang, "The effect of Mn substitution on thermoelectric properties of Ca 3 Mn x Co 4− x O 9 at low temperatures," Solid state communications, vol. 134, no. 4, pp. 235-238, 2005.

      [9] K. Agilandeswari and A. Ruban Kumar, "Synthesis, characterization, temperature dependent electrical and magnetic properties of Ca3Co4O9 by a starch assisted sol–gel combustion method," Journal of Magnetism and Magnetic Materials, vol. 364, pp. 117-124, 2014.

      [10] S. Rahnamaeiyan and R. Talebi, "Preparation and characterization of the bismuth aluminate nanoparticles via a green approach and its photocatalyst application," Journal of Materials Science: Materials in Electronics, vol. 27, no. 1, pp. 304-309, 2016.

      [11] A. Motevalian and S. Salem, "Effect of glycine–starch mixing ratio on the structural characteristics of MgAl 2 O 4 nano-particles synthesized by sol–gel combustion," Particuology, vol. 24, pp. 108-112, 2016.

      [12] R. S. Yadav et al., "Effects of annealing temperature variation on the evolution of structural and magnetic properties of NiFe 2 O 4 nanoparticles synthesized by starch-assisted sol–gel auto-combustion method," Journal of Magnetism and Magnetic Materials, vol. 394, pp. 439-447, 2015.

      [13] R. S. Yadav et al., "Magnetic properties of Co 1− x Zn x Fe 2 O 4 spinel ferrite nanoparticles synthesized by starch-assisted sol–gel autocombustion method and its ball milling," Journal of Magnetism and Magnetic Materials, vol. 378, pp. 190-199, 2015.

      [14] A. K. Zak, W. A. Majid, M. Mahmoudian, M. Darroudi, and R. Yousefi, "Starch-stabilized synthesis of ZnO nanopowders at low temperature and optical properties study," Advanced Powder Technology, vol. 24, no. 3, pp. 618-624, 2013.

      [15] I. Matsukevich, A. Klyndyuk, E. Tugova, A. Kovalenko, A. Marova, and N. Krasutskaya, "Thermoelectric properties of Ca3–x Bi x Co4O9+ δ (0.0⩽ x⩽ 1.5) ceramics," Inorganic Materials, vol. 52, no. 6, pp. 593-599, 2016.

      [16] F. Zhang, Q. Lu, T. Li, X. Zhang, J. Zhang, and X. Song, "Preparation and thermoelectric transport properties of Ba-, La- and Ag-doped Ca3Co4O9 oxide materials," Journal of Rare Earths, vol. 31, no. 8, pp. 778-783, 2013.

      [17] A. Sotelo, S. Rasekh, M. A. Madre, E. Guilmeau, S. Marinel, and J. C. Diez, "Solution-based synthesis routes to thermoelectric Bi2Ca2Co1.7Ox," Journal of the European Ceramic Society, vol. 31, no. 9, pp. 1763-1769, 2011.

      [18] A. Bhaskar, C.-S. Jhang, and C.-J. Liu, "Thermoelectric Properties of Ca3− xDyxCo3. 95Ga0. 05O9+ δ," Journal of electronic materials, vol. 42, no. 12, pp. 3541-3546, 2013.




Article ID: 13121
DOI: 10.14419/ijet.v7i2.29.13121

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.