Work

Thermal excitation of the Co3+triplet spin-state in LaCoO3determined by polarized neutron diffraction

Year: 2006

Type: article

Abstract: The magnetic moment induced by an external magnetic field of 5.8 T on the Co 3+ ions in LaCoO 3 has been measured by polarized neutron diffraction. Measurements were made at 100 K, near to the susceptibility maximum usually associated with a gradual spin-state transition, as well as at 1.5 and at 285 K. The data give evidence for a transition from the ground singlet state ( S = 0) to the excited triplet intermediate spin-state ( S = 1). The energy of Δ H ≈1000 K estimated for the high-spin-state ( S = 2), is too high to make a significant contribution to the moment, even at T = 285 K. There is evidence for a small negative spin density associated with the oxygen ligands in agreement with the theory that predicts intermediate spin as the first excited state.

Source: Journal of Physics Condensed Matter

DOI: 10.1088/0953-8984/18/13/019

Authors: V P Plakhty, P J Brown, B Grenier, S V Shiryaev, S N Barilo, S V Gavrilov, E Ressouche

Institutions: Petersburg Nuclear Physics Institute, Institut Laue-Langevin, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Grenoble, Institute of Solid State Physics and Semiconductors

Language: English

Topic: Magnetic and transport properties of perovskites and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1991944477

FWCI: 1.817

Cites: 27

Cited by: 24

Related to: 10