Properties of intergrowths and partial dislocations in mercury-based HTSC oxides

• Published in: Physica status solidi. A, Applications and materials science Applications and materials science, 2005-08, Vol.202 (10), p.1909-1913
• Main Authors: Eyidi, Dominique, Tall, Papa D., Rabier, Jacques
• Format: Article
• Language: English
• Subjects: 61.50.Nw; 61.72.Ff; 61.72.Lk; 61.72.Nn; 66.30.Lw; 68.37.Lp; Anelasticity, internal friction, stress relaxation, and mechanical resonances; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cuprates superconductors (high tc and insulating parent compounds); Exact sciences and technology; Mechanical and acoustical properties of condensed matter; Physics; Superconductivity
• ISSN: 1862-6300; 0031-8965; 1862-6319; 1521-396X
• DOI: 10.1002/pssa.200521028

Intergrowths, stacking faults and dislocations have been investigated by transmission electron microscopy in (Hg, Re)Ba2Ca2Cu3O8+δ and HgBa2CaCu2O6+δ bulk superconductors. The stacking fault vectors and the Burgers vectors of partial edge dislocations associated with the nucleation or the annihilation of [Ca–CuO2] bilayers in the unit cells of both compounds are derived by different methods. We discuss the influence of uniaxial stresses on intergrowth propagation and also mechanisms yielding strain relaxation around intergrowths. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)