Incommensurate magnetism in non-superconducting PrBa{sub 2}Cu{sub 3}O{sub 6.92}

Technical Report · Thu Dec 31 04:00:00 EST 1998

DOI:https://doi.org/10.2172/307971· OSTI ID:307971

Boothroyd, A T ^[1]; Hill, J P ^[2]; McMorrow, D F; Andersen, N H ^[3]; Stunault, A; Vettier, C ^[4]; Wolf, T ^[5]

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1. Univ. of Oxford (United Kingdom)
2. Brookhaven National Lab., Upton, NY (United States). Dept. of Physics
3. Risoe National Lab., Roskilde (Denmark). Condensed Matter Physics and Chemistry Dept.
4. European Synchrotron Radiation Facility, Grenoble (France)
5. Forschungszentrum Karlsruhe (Germany)

The authors report the discovery of incommensurate magnetic order in non-superconducting single crystals PrBa{sub 2}Cu{sub 3}O{sub 6.92}. Resonant x-ray magnetic scattering at the Pr L{sub II} and L{sub III} edges and high resolution neutron diffraction were used to characterize the magnetic order on the different magnetic sublattices. The data reveal that the Pr sublattice orders at a temperature of 19 K in an incommensurate structure with ordering wavevector (0.5 {+-} {delta}, 0.5, 0) or (0.5, 0.5 {+-} {delta}, p), {delta} {approx} 0.006--0.008. A spin reorientation in the Pr sublattice to a commensurate antiferromagnetic structures with ordering wavevector (0.5, 0.5, 0.5) takes place at a temperature close to 9 K.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); United Kingdom Engineering and Physical Sciences Research Council (United Kingdom)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 307971
• Report Number(s): BNL--65996; CONF-980979--; ON: DE99001523; BR: KC0202020
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
EXPERIMENTAL DATA
MAGNETIC PROPERTIES
MONOCRYSTALS
NEUTRON DIFFRACTION
PRASEODYMIUM OXIDES
SCATTERING
X RADIATION