Neutron-diffraction study of the antiferromagnetic form factor of La sub 2 NiO sub 4

Journal Article · Sat Feb 29 23:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.5645· OSTI ID:5001559

Wang, X; Stassis, C; Johnston, D C; Leung, T C; Ye, J; Harmon, B N ^[1]; Lander, G H ^[2]; Schultz, A J; Loong, C ^[3]; Honig, J M ^[4]

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1. Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011 (United States)
2. Commission of European Communities, Joint Research Center, Postfach 2340, D-7500 Karlsruhe (Germany)
3. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Department of Chemistry, Purdue University, West Lafayette, Indiana 47907 (United States)

Neutron-diffraction techniques have been used to study the antiferromagnetic form factor of a La{sub 2}NiO{sub 4} single crystal at 15 K. The antiferromagnetic form factor was obtained by measuring the integrated intensities of 16 magnetic reflections. A plateau is clearly seen at low {ital Q} (up to 3 A{sup {minus}1}) in the experimentally determined form factor, similar to those observed for La{sub 2}CuO{sub 4} and Sr{sub 2}CuO{sub 2}Cl{sub 2}. The magnetization density deduced from the experimental data exhibits strong ansiotropy in the Ni-O plane. The experimental data are compared with covalency models and a recent spin-polarized band calculation.

• DOE Contract Number: W-7405-ENG-82; W-31109-ENG-38; FG02-90ER45427
• OSTI ID: 5001559
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:10; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANTIFERROMAGNETISM
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
FORM FACTORS
LANTHANUM COMPOUNDS
MAGNETISM
MAGNETIZATION
MONOCRYSTALS
NEUTRON DIFFRACTION
NICKEL COMPOUNDS
NICKELATES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
TEMPERATURE RANGE
TEMPERATURE RANGE 0013-0065 K
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS