Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Hardness Prediction and First Principle Study of Re-123(Re = Y, Eu, Pr, Gd) Superconductors

  • Liu, Weiwei (Environmental Management College of China) ;
  • Zhou, Y.P. (College of Environment and Chemical Engineering, Yanshan University) ;
  • Feng, X.L. (College of Environment and Chemical Engineering, Yanshan University)
  • Published : 2009.12.20
Download PDF
⟨ Previous Next ⟩

Abstract

The chemical bond parameters of Y-123, Eu-123, Pr-123 and Gd-123 compounds have calculated using the chemical bond theory of complex crystals. Their hardness have been predicted by the chemical bond definition of hardness. The calculated results indicate that the Ba-O and RE-O types of bond have a lower covalent character and the Cu-O types of bond have greater covalency. The hardness values increase as the unit cell volume of the rare earth superconductor structures decrease.

Keywords

References

  1. Ikuta, H.; Oka, T.; Mizutani, U. Oyo Buturi. 1999, 68, 403
  2. Gou , H. Y.; Hou , L.; Zhang , J. W.; Gao, F. M. Appl. Phys. Lett. 2008, 92, 241901 https://doi.org/10.1063/1.2938031
  3. Gou , H. Y.; Hou, L.; Zhang , J. W.; Wang, Z. B.; Gao, L. H.; Gao, F. M. Appl. Phys. Lett. 2007, 90, 191905 https://doi.org/10.1063/1.2737130
  4. Tse, J. S.; Klug, D. D.; Gao, F. Phys. Rev. B 2006, 73, 140102 https://doi.org/10.1103/PhysRevB.73.140102
  5. Gou, H.; Hou, L.; Zhang, J.; Li, H.; Sun, G. F.; Gao, F. M. Appl. Phys. Lett. 2006, 88, 221904 https://doi.org/10.1063/1.2208367
  6. Gou, H. Y.; Hou, L.; Zhang, J. W.; Sun, G. F.; Gao, L. H.; Gao, F. M. Appl. Phys. Lett. 2006, 89, 141910 https://doi.org/10.1063/1.2359434
  7. Gou, H. Y.; Hou, L.; Zhang, J. W.; Sun, G. F.; Gao, L. H.; Gao, F. M. Phys. Status Solidi B 2008, 245, 58 https://doi.org/10.1002/pssb.200743241
  8. Zhang, S. Y.; Gao, F. M.; Wu, C. X. Journal of Alloys and Compounds 1998, 275-277, 835 https://doi.org/10.1016/S0925-8388(98)00452-6
  9. Gao, F. M.; Li, D. C.; Zhang, S. Y. J. Phys. Condens. Matter. 2003, 15, 5079 https://doi.org/10.1088/0953-8984/15/29/319
  10. Wu, Z.; Meng, Q.; Zhang, S. Physical Review B 1998, 58, 958 https://doi.org/10.1103/PhysRevB.58.958
  11. Xue, D.; Zhang, S. Appl. Phys. Lett. 1997, 70, 943 https://doi.org/10.1063/1.118448
  12. Gao, F. M. Physical Review B 2004, 69, 094113 https://doi.org/10.1103/PhysRevB.69.094113
  13. Gao, F. M.; Xu, R.; Liu, K. Physical Review B 2005, 71, 052103 https://doi.org/10.1103/PhysRevB.71.052103
  14. Gao, F. M.; Hou, L.; He, Y. H. Journal of Physical Chemistry B 2004, 108, 13069 https://doi.org/10.1021/jp047627e
  15. Gao, F. M.; Qin, X. J.; Wang, L. Q.; He, Y. H.; Sun, G. F.; Hou, L.; Wang, W. Y. Journal of Physical Chemistry B 2005, 109, 14892 https://doi.org/10.1021/jp052547b
  16. Phillips, J. C. Rev. Mod. Phys. 1970, 42, 317 https://doi.org/10.1103/RevModPhys.42.317
  17. Levine, B. F. J. Chem. Phys. 1973, 59, 1463 https://doi.org/10.1063/1.1680204
  18. Gao, F. M.; Zhang, S. Y. Journal of Physics and Chemistry of Solids 1997, 58, 1991 https://doi.org/10.1016/S0022-3697(96)00139-4
  19. Gao, F. M. Journal of Physics: Condensed Matter 2003, 15, L637 https://doi.org/10.1088/0953-8984/15/41/L02
  20. Gao, F. M.; Zhang, S. Y. Journal of the Chinese Rare Earth Society 1993, 11, 186
  21. Yoshino, Y.; Iwabuch, A.; Noto, K.; Sakai, N.; Murakami, M. Physica C 2001, 357-360, 796 https://doi.org/10.1016/S0921-4534(01)00367-7
  22. Material studio 2.2, 2002
  23. Yamani, Z.; Akhavan, M. Phys. Rev. B 1997, 56, 7894 https://doi.org/10.1103/PhysRevB.56.7894
  24. Kim, H. T. Physica C 2000, 341-348, 259 https://doi.org/10.1016/S0921-4534(00)00469-X
  25. Gilman, J. J. Mat. Res. Innovat. 1997, 1, 71 https://doi.org/10.1007/s100190050023

Cited by

  1. Studies on Morphologies and Mechanical Properties of Multi-walled Carbon Nanotubes/Epoxy Matrix Composites vol.31, pp.5, 2009, https://doi.org/10.5012/bkcs.2010.31.5.1237