Orthorhombic to tetragonal phase transition and superconductivity in the Ba2Cu3O4Cl2 compound

M. S. da Luz; C. A. M. dos Santos; B. Ferreira; A. J. S. Machado

Orthorhombic to tetragonal phase transition and superconductivity in the Ba2Cu3O4Cl2 compound

Materials Science 2007-05-23 v1

Authors: M. S. da Luz , C. A. M. dos Santos , B. Ferreira , A. J. S. Machado

Abstract

In this work we have investigated the orthorhombic to tetragonal phase transition in the Ba2Cu3O4Cl2 compound. This transition was observed by X-ray powder diffractometry carried out in samples heat treated between 700 and 750OC and also in samples with Ba2ZnCu2O4Cl2 composition. Results of X-ray diffractograms simulation confirm the phase transition. dc-Magnetization measurements performed in SQUID showed the existence of diamagnetism signal. The results suggest the existence of localized superconductivity and can explain the different magnetic properties reported in literature for the Ba2Cu3O4Cl2 compound.

Keywords

phase transition superconductivity Ba2Cu3O4Cl2 X-ray powder diffractometry diamagnetism SQUID magnetization

Cite

@article{arxiv.cond-mat/0606524,
  title  = {Orthorhombic to tetragonal phase transition and superconductivity in the Ba2Cu3O4Cl2 compound},
  author = {M. S. da Luz and C. A. M. dos Santos and B. Ferreira and A. J. S. Machado},
  journal= {arXiv preprint arXiv:cond-mat/0606524},
  year   = {2007}
}

Comments

paper with 14 pages, 7 figures and 2 tables Submited to the Materials Letters

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