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}
Conference
·
OSTI ID:10114137
- Laboratoire Leon Brillouin (LLB) - Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
- Brookhaven National Lab., Upton, NY (United States)
- NTT Applied Electronics Labs., Tokai, Ibaraki, (Japan)
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.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 10114137
- Report Number(s):
- BNL--46854; CONF-910736--24; ON: DE92005146
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:5906942
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Journal Article
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OSTI ID:7248948
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· Physical Review, B: Condensed Matter; (USA)
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OSTI ID:6925999
Related Subjects
36 MATERIALS SCIENCE
360202
360204
360207
665100
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
BRAGG REFLECTION
COPPER IONS
COPPER OXIDES
CRYSTAL STRUCTURE
ELASTIC SCATTERING
HIGH-TC SUPERCONDUCTORS
NEODYMIUM COMPOUNDS
NEUTRON DIFFRACTION
ORDER PARAMETERS
PHYSICAL PROPERTIES
STRUCTURE AND PHASE STUDIES
TEMPERATURE DEPENDENCE
360202
360204
360207
665100
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
BRAGG REFLECTION
COPPER IONS
COPPER OXIDES
CRYSTAL STRUCTURE
ELASTIC SCATTERING
HIGH-TC SUPERCONDUCTORS
NEODYMIUM COMPOUNDS
NEUTRON DIFFRACTION
ORDER PARAMETERS
PHYSICAL PROPERTIES
STRUCTURE AND PHASE STUDIES
TEMPERATURE DEPENDENCE