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Published on: March 24, 2019
Magnetic structure of the metallic triangular antiferromagnet Ag2NiO2
Hiroshi Nozaki1, Martin Månsson, Bertrand Roessli
1Toyota Central R & D Laboratories, Inc., 41-1 Yokomichi, Nagakute Aichi 480-1192, Japan. h-nozaki@mosk.tytlabs.co.jp
Abstract:
The magnetic structure of the metallic antiferromagnet Ag2NiO2 with the Néel temperature TN = 56 K has been investigated by means of a neutron diffraction technique using a powder sample in the temperature range between 5 and 65 K. The antiferromagnetic (AF) diffraction peaks are clearly observed below TN and can be indexed with the propagation vector [Formula: see text]. Based on the results of both a representational analysis and a Rietveld refinement of the magnetic peaks, the AF spin structure is determined as an A-type AF structure with ml = m0cos(2πk ⋅l), where ml is the moment at the lth Ni(3+) site and m0 = (0.31,0,0.65) μB at 5 K.
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