Magnetic Ordering in a Frustrated Bow-Tie Lattice

Published

April 28, 2018

Author(s)

Laura J. Vera Stimpson, Efrain E. Rodriquez, Craig Brown, Gavin B. G. Stenning, Marek Jura, Donna C. Arnold

Abstract

We report a systematic elastic and inelastic powder neutron diffraction study of the geometrically frustrated material, Ca₂Mn₃O₈. Ca₂Mn₃O₈ exhibits a "bow-tie" like connectivity of Mn⁴⁺ with Ca²⁺ occupying octahedral sites between MnO₆ layers. Magnetic refinements of neutron powder diffraction data indicate that the spins order with a canted four sub-lattice-like (up arrow up arrow down arrow down arrow}) arrangement below approximately equal} 50 K. In addition, short range magnetic correlations can be seen to persist, until approximately equal} 130 K. Inelastic data demonstrates that frustration results in the dynamic motion of the spins even below T_N and provides evidence of both "spin-flow" and "chain-flip" phenomena.

Citation

Journal of Materials Chemistry C

Volume

6

Issue

16

Pub Type

Journals

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Keywords

frustration, magnetism, neutron scattering, magnetic structure, inelastic neutron scattering

Citation

Vera Stimpson, L. , Rodriquez, E. , Brown, C. , Stenning, G. , Jura, M. and Arnold, D. (2018), Magnetic Ordering in a Frustrated Bow-Tie Lattice, Journal of Materials Chemistry C, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=923917 (Accessed October 6, 2024)