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Neutron-diffraction techniques have been used to study the antiferromagnetic form factor of a La(2)NiO(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 Q in the experimentally determined form factor, similar to those observed for La(2)CuO(4) and Sr(2)CuO(2)Cl(2). The magnetisation density deduced from the experimental data exhibits strong anisotropy in the Ni-O plane. The experimental data are compared with covalency models and a recent spin-polarised band calculation.

Additional information

Authors: WANG X-L ET AL., Iowa State University, Ames Laboratory and Department of Physics, Ames (US);LANDER G H, JRC Karlsruhe (DE);SCHULTZ A J, Argonne National Laboratory (US);LOONG C-K, Argonne National Laboratory (US);HONIG J M, Purdue University, Department of Chemistry, West Lafayette (US)
Bibliographic Reference: Article: Physical Review, Vol. B45 (1992) No. 10, pp. 5645-5653
Record Number: 199210749 / Last updated on: 1994-12-02
Original language: en
Available languages: en