Neutron diffraction study of the magnetic ordering of the Cu{sup ++} spins in Nd{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 6+x}

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Elastic neutron scattering experiments performed on single crystals of Nd{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 6+y} reveal successive antiferromagnetic (AF) ordering of the Cu{sup ++} spins. The as grown single crystals show an AF structure characterized by a Neel temperature T{sub N1} {approximately} 390K and a magnetic wave vector (1/2 1/2 0) referring to the tetragonal structure of NdBa{sub 2}Cu{sub 3}O{sub 6}. As the temperature is lowered below T{sub N2} {approximately} 150K, a spin reorientation develops and a second AF ordering with (1/2 1/2 1/2) wave vector is stabilized. When the samples are oxygenated the tetragonal symmetry and the Neel temperature T{sub … continued below

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2 p.

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Moudden, A. H.; Hennion, B.; Schweiss, P.; Gehring, P. M.; Shirane, G. & Hidaka, Y. December 31, 1991.

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  • Moudden, A. H.
  • Hennion, B. Laboratoire Leon Brillouin (LLB) - Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
  • Schweiss, P. Laboratoire Leon Brillouin (LLB) - Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
  • Gehring, P. M.
  • Shirane, G. Brookhaven National Lab., Upton, NY (United States)
  • Hidaka, Y. NTT Applied Electronics Labs., Tokai, Ibaraki, (Japan)

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Elastic neutron scattering experiments performed on single crystals of Nd{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 6+y} reveal successive antiferromagnetic (AF) ordering of the Cu{sup ++} spins. The as grown single crystals show an AF structure characterized by a Neel temperature T{sub N1} {approximately} 390K and a magnetic wave vector (1/2 1/2 0) referring to the tetragonal structure of NdBa{sub 2}Cu{sub 3}O{sub 6}. As the temperature is lowered below T{sub N2} {approximately} 150K, a spin reorientation develops and a second AF ordering with (1/2 1/2 1/2) wave vector is stabilized. When the samples are oxygenated the tetragonal symmetry and the Neel temperature T{sub N1} remain unchanged, whereas the spin reorientation at T{sub N2} is suppressed. The results indicate that the Nd/Ba substitution increases the stability of the tetragonal structure upon the oxygen content. This may induce new possibilities of local oxygen ordering that favour the presence of holes in the deficient layer.

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2 p.

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OSTI; NTIS; INIS; GPO Dep.

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  • 3. international conference on materials and mechanisms of superconductivity high temperature superconductors (M2S-HTSC-3): the science of HTSC,Kanazawa (Japan),22-26 Jul 1991

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  • Other: DE92005146
  • Report No.: BNL--46854
  • Report No.: CONF-910736--24
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 10114137
  • Archival Resource Key: ark:/67531/metadc1279099

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  • December 31, 1991

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  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 6, 2018, 6:40 p.m.

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Moudden, A. H.; Hennion, B.; Schweiss, P.; Gehring, P. M.; Shirane, G. & Hidaka, Y. Neutron diffraction study of the magnetic ordering of the Cu{sup ++} spins in Nd{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 6+x}, article, December 31, 1991; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1279099/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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