Polymorphism in BaPb1-xBixO3 at the superconducting composition

E. Climent-Pascual, N. Ni, S. Jia, Q. Huang, R. J. Cava

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Using a combination of high-resolution and high-sensitivity neutron and x-ray diffraction measurements, it is shown that BaPb1-xBi xO3 is dimorphic for the critical superconducting composition regime of x between 0.2 and 0.3. The system is not chemically phase separated; the simultaneous existence of tetragonal and orthorhombic polymorphs of the same composition is demonstrated. The polymorphs differ fundamentally in the distortion and tilting of the octahedra, such that they cannot be obtained from each other via a second-order phase transition. It is established that the tetragonal symmetry polymorph is the superconducting phase.

Original languageEnglish (US)
Article number174512
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number17
StatePublished - May 16 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Polymorphism in BaPb1-xBixO3 at the superconducting composition'. Together they form a unique fingerprint.

Cite this