Magnetism in BaCoS{sub 2}
Conference
·
OSTI ID:385591
- Oak Ridge National Lab., TN (United States)
- Florida State Univ., Tallahassee, FL (United States)
BaCoS{sub 2} is a layered Mott-Hubbard insulator that orders antiferromagnetically near 300 K. We report magnetic susceptibility measurements on polycrystalline BaCoS{sub 2} from 77 K to 800 K, and in- and out-of-plane measurements on single crystals from 2 K 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}.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Florida State Energy Office, Tallahassee, FL (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 385591
- Report Number(s):
- CONF-961141--1; ON: DE96015024; CNN: Agreement DMR-9016241
- Country of Publication:
- United States
- Language:
- English
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