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THE MAGNETIC-STRUCTURE OF KNIASO4 - A 2-DIMENSIONAL HONEYCOMB LATTICE

BRAMWELL, ST; BUCKLEY, AM; DAY, P; (1994) THE MAGNETIC-STRUCTURE OF KNIASO4 - A 2-DIMENSIONAL HONEYCOMB LATTICE. J SOLID STATE CHEM , 111 (1) 48 - 51.

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Abstract

The magnetic structure of KNiAsO4, an example of a two-dimensional honeycomb lattice, has been determined from neutron powder diffraction data collected at 1.5 and 30 K. The crystallographic unit cell (R3) is doubled along a (k = 1/2, 0, 0) and the three observed magnetic reflections are indexed as 101, -102, 104 in the extended cell. The magnetic structure can be described as zig-zag antiferromagnetic chains parallel to a such that each moment has one nearest neighbor parallel and two antiparallel. This contrasts with the structurally related BaNi2(AsO4)2, in which each magnetic ion has one antiparallel and two parallel neighbors. (C) 1994 Academic Press, Inc.

Type: Article
Title: THE MAGNETIC-STRUCTURE OF KNIASO4 - A 2-DIMENSIONAL HONEYCOMB LATTICE
Keywords: DERIVATIVES
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy
URI: http://discovery.ucl.ac.uk/id/eprint/133516
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