Magnetic Compton scattering study of colossal magnetoresistance materials Fe1-xCuxCr2S4

Deb, Aniruddha, Hiraoka, N., Itou, M., Sakurai, Y., Palmer, H. M. ORCID: and Greaves, C. (2002) Magnetic Compton scattering study of colossal magnetoresistance materials Fe1-xCuxCr2S4. Physical Review B - Condensed Matter and Materials Physics, 66 (10). pp. 1004071-1004074. ISSN 0163-1829

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The spin-polarized electron momentum distributions in the Cr-based chalcogenide spinels Fe1-xCuxCr2S4 (x = 0.0,0.5,1.0) have been measured using a magnetic Compton scattering technique at T = 10 K. The experimental magnetic Compton profiles have been compared with the results from electronic structure calculations performed using the full potential linearized augmented plane-wave method. The theoretical analysis includes a decomposition of the various orbital and atomic contributions. For x = 0.0 and 0.5 sample compositions, the results show that the magnetic moments of the tetrahedrally coordinated Fe2+ (for x = 0.0) and Fe3+ (for x = 0.5) with spin moments of 3.66μB (for x = 0.0) per formula unit (FU-1) and 1.6μB FU-1 (for x = 0.5), are aligned antiparallel to those of the octahedrally coordinated Cr3+ with spin moments of 5.0μB FU-1 (for x = 0.0) and 4.82μB FU-1 (for x = 0.5). In the ferromagnetic system for x = 1.0, the Cr moment is found to be 5.28μB FU-1.

Item Type: Article
Uncontrolled Keywords: electronic, optical and magnetic materials,condensed matter physics ,/dk/atira/pure/subjectarea/asjc/2500/2504
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
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Depositing User: LivePure Connector
Date Deposited: 12 Nov 2019 14:32
Last Modified: 22 Oct 2022 05:26
DOI: 10.1103/PhysRevB.66.100407

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