Defect structure of ferromagnetic superconducting RuSr2GdCu2O8

O I Lebedev, G Van Tendeloo, J P Attfield, Abbie McLaughlin

Research output: Contribution to journalArticle

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Abstract

The structure and defect structure of superconducting ferromagnetic bulk RuSr2GdCu2O8 has been investigated using high-resolution transmission electron microscopy and high-resolution scanning transmission microscopy. Two distinct, but closely related structures, due to ordering of rotated RuO6 octahedra and due to Cu substitution in the Ru-O layer, have been revealed. The structure of Ru1-xSr2GdCu2+xO8-delta can be described as a periodic alteration along the c axis of CuO4 planes and RuO6 octahedra. The unit-cell parameters of this phase are root 2a(p) x root 2a(p) x 2c. The possible influence of this phase and defect structure on the sensitivity of the superconductivity and magnetic properties is discussed. Local defects such as 90 S domain boundaries, (130) antiphase boundaries, and the associated dislocations are analyzed.

Original languageEnglish
Article number224524
Number of pages9
JournalPhysical Review B Condensed Matter and Materials Physics
Volume73
Issue number22
DOIs
Publication statusPublished - Jun 2006

Fingerprint

Defect structures
defects
Phase structure
High resolution transmission electron microscopy
Superconductivity
Magnetic properties
Microscopic examination
Substitution reactions
antiphase boundaries
high resolution
Scanning
Defects
superconductivity
substitutes
magnetic properties
microscopy
transmission electron microscopy
scanning
sensitivity
cells

Keywords

  • Coexistence
  • YBA2CU3O7
  • Crystal
  • State
  • Order

Cite this

Defect structure of ferromagnetic superconducting RuSr2GdCu2O8. / Lebedev, O I ; Van Tendeloo, G ; Attfield, J P ; McLaughlin, Abbie.

In: Physical Review B Condensed Matter and Materials Physics , Vol. 73, No. 22, 224524, 06.2006.

Research output: Contribution to journalArticle

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