Skip to main content Accessibility help
×
Home

Phase Relationships in ISO- and Aliovalent Analogues of La2CuO4: Implications for Superconductivity

  • E. M. Mccarron (a1), M. K. Crawford (a1), R. L. Harlow (a1) and W. E. Fameth (a1)

Abstract

In addition to the well known I4/mmm and Bmab phases, recent low temperature structural studies of certain T-type (K2NiF4-related) La2CuO4 analogues have revealed two additional structural modifications, one with Pccn and the other with P42/ncm symmetry. Via appropriate iso- and aliovalent substitution chemistry, regions of T-type phase field have been mapped out and the influence of these phase transitions on superconductivity studied.

Copyright

References

Hide All
1. Singh, K. K., et al., Mat. Res. Bull. 17, 493 (1982).
2. Bringley, J. F., et al., J. Solid State Chem. 86, 310 (1990).
3. Manthiram, A. and Goodenough, J. B., J. Solid State Chem. 87, 402 (1990).
4. Manthiram, A. and Goodenough, J. B., J. Solid State Chem. 92, 231 (1991).
5. Crawford, M. K., et al., Phys. Rev. B 44. PP- 7749 (1991).
6. Axe, J. D., et al., Phys. Rev. Lett, 62, 2751 (1991).
7. Crawford, M. K., et al., in Proc, of Santa Fe Workshop on Lattice Effects in High Tc Superconductors, Egami, T., Ed., World Scientific Press (1992).
8. Crawford, M. K., et al., Science 250, 1390 (1990).
9. Values for 9 coordinate ionic radii in taken from Shannon, R. D., Acta Crystallagr. A32, 751 (1976).
10. A typical LTT tilt of IQ11 = IQ21 ∼: 5° (relative to HTT) represents a displacement of the apical oxygen by -10% of the distance towards its analogous T' position.

Phase Relationships in ISO- and Aliovalent Analogues of La2CuO4: Implications for Superconductivity

  • E. M. Mccarron (a1), M. K. Crawford (a1), R. L. Harlow (a1) and W. E. Fameth (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed