A cascade of magnetic field induced spin transitions in LaCoO{<_3}.

Journal Article · Fri Jul 20 00:00:00 EDT 2012 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.109.037201· OSTI ID:1046911

Altarawneh, M M; Chern, G -W; Harrison, N; Batista, C D; Uchida, A; Jaime, M; Rickel, D G; Crooker, S A; Mielke, C H; Betts, J B; Mitchell, J F; Hoch, M J. R. ^[1]

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1. Materials Science Division

We present magnetization and magnetostriction studies of LaCoO{sub 3} in magnetic fields approaching 100 T. In contrast with expectations from single-ion models, the data reveal two distinct first-order transitions and well-defined magnetization plateaus. The magnetization at the higher plateau is only about half the saturation value expected for spin-1 Co{sup 3+} ions. These findings strongly suggest collective behavior induced by interactions between different electronic configurations of Co{sup 3+} ions. We propose a model that predicts crystalline spin textures and a cascade of four magnetic phase transitions at high fields, of which the first two account for the experimental data.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 1046911
• Report Number(s): ANL/MSD/JA-73778; PRLTAO; TRN: US201215%%595
• Journal Information: Physical Review Letters, Vol. 109, Issue 3; ISSN 0031-9007
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MAGNETIC FIELDS
MAGNETIZATION
MAGNETOSTRICTION
SATURATION
SPIN