Magnetic ordering of the Cu spins in PrBa2Cu3O6+x

Novel Pr-Cu Magnetic Phase at Low Temperature in PrBa2Cu3Boothroyd1, Longmore2, Andersen3 et al. 1997Phys. Rev. Lett.637551View full textAdd to dashboardCite

“…The onset temperatures of this phase in our PrBa 2 Cu 3 O 61x crystals were 266 K ͑x 0.92͒ and 347 K ͑x 0.35͒, in reasonable agreement with literature results for polycrystalline samples [4,5], but lower than for impure single crystals [10,19]. The AFI model describes the observed intensities very well, as demonstrated in Table I for the x 0.92 crystal, and the ordered moments are m Cu 0.58m B ͑x 0.92͒ TABLE I.…”

Magnetic ordering inPrBa2Cu3−yLongmore1, Boothroyd2, Changkang3 et al. 1996Phys. Rev. B

“…13 In that work, the magnetic ordering of the Cu moments was investigated in a crystal after different annealing treatments. Néel temperatures of at least 370 K were reported for the copper ordering, which is somewhat higher than that found with polycrystalline samples by the local probes listed above.…”

Chapter 199 Neutron scattering studies of lanthanide magnetic ordering

“…In particular, it is now known that crystals grown in alumina or MgO crucibles by the flux technique become doped by Al or Mg (Casalta et al 1994, Uma et al 1998b). These (inadvertent) dopings can cause the Cu chain spins to order , Rosov et al 1992a). This ordering varies with oxygen content x, and is strongly coupled to the Pr sublattice because the symmetry of the two magnetic structures is the same.…”