Influence of hydrogen on 123 and 124 HTc superconductors studied by Cu NMR and NQR

H. Lütgemeier, S. Schmenn, H. Schone, Yu Baikov, I. Felner, S. Goren, C. Korn

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The antiferromagnetic compounds produced by the reaction of the 123 and 124 HTc superconductors with hydrogen are studied by nuclear resonancee of copper. For the 123 compounds two reactions are possible, the reduction by hydrogen which leads to the normal antiferromagnetic YBa2Cu3O6, and the solution of hydrogen in YBa2Cu3O7 which forms a different antiferromagnetic structure with hydrogen concentration of more than 2 H mol-1. Both structures can be distinguished by the nuclear quadrupole resonance spectra of the Cu(1) sites and the nuclear magnetic resonance spectra in the hyperfine field of the antiferromagnetic state. By using samples containing Gd at the place of Y we can prove that only the Cu(2) sites carry permanent magnetic moments. In the hydrogen loaded YBa2Cu4O8 the situation is similar with the antiferromagnetic order limited to the Cu(2) sites.

Original languageEnglish
Pages (from-to)29-33
Number of pages5
JournalJournal of Alloys and Compounds
Issue number1-2
StatePublished - 15 Mar 1995


  • High T superconductors
  • Hydrogen
  • Nuclear magnetic resonance
  • Nuclear quadrupole resonance

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'Influence of hydrogen on 123 and 124 HTc superconductors studied by Cu NMR and NQR'. Together they form a unique fingerprint.

Cite this