Single crystal X-ray characterization of the incommensurate modulation in the high Tc superconductor Bi2Sr 2CaCu2O8.

P.-A. Albouy , R. Moret , M. Potel , P. Gougeon , J. Padiou , J.-C. Levet , H. Noël

We have studied the incommensurate modulation in Bi2Sr 2CaCu2O8 by single crystal X-ray diffraction. First and second order satellite reflections with wave vectors q1 = (0,0.211,1) and q2 = 2q1 have been measured. The period of the modulation along b is 25.59 Å. A preliminary analysis of the satellite intensities indicates that the modulation involves strong displacive components polarized along b and c. No low-temperature changes have been observed. The single crystals exhibit a large systematic mosaicity.

Mots clés: bismuth compounds; calcium compounds; high temperature superconductors; strontium compounds; X ray diffraction examination of materials

Domaines: Articles anciens

P.-A. Albouy, R. Moret, M. Potel, P. Gougeon, J. Padiou, et al.. Single crystal X-ray characterization of the incommensurate modulation in the high Tc superconductor Bi2Sr 2CaCu2O8.. Journal de Physique, 1988, 49 (12), pp.1987-1991. ⟨10.1051/jphys:0198800490120198700⟩. ⟨jpa-00210878⟩