Magnetism in BaCoS{sub 2}

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.365182· OSTI ID:496504

Mandrus, D ^[1]; Sarrao, J L ^[2]; Chakoumakos, B C; Fernandez-Baca, J A; Nagler, S E; Sales, B C ^[1]

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1. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37922 (United States)
2. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306 (United States)

BaCoS{sub 2} is a layered Mott{endash}Hubbard insulator that orders antiferromagnetically near 300 K. We report magnetic susceptibility measurements on polycrystalline BaCoS{sub 2} from 77 to 800 K, and in- and out-of-plane measurements on single crystals from 2 to 350 K. We also report a powder neutron refinement of the magnetic structure of BaCoS{sub 2}. The neutron measurements indicate that the moments lie in the plane, and that the magnetic unit cell is the same as the (orthorhombic) chemical cell. The ordered moment obtained from the neutron refinement is close to 3 {mu}{sub B}, indicating that the Co ions are in the high-spin (S=3/2) configuration. The effective moment inferred from the high temperature susceptibility, p=5.26{mu}{sub B}, is also consistent with high-spin Co{sup +2}. {copyright} {ital 1997} {ital American Institute of Physics}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 496504
• Report Number(s): CONF-961141--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETIC MATERIALS
BARIUM COMPOUNDS
BARIUM SULFIDES
COBALT COMPOUNDS
COBALT SULFIDES
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
NEUTRON DIFFRACTION
ORNL
POLYCRYSTALS
TEMPERATURE DEPENDENCE