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Negative thermal expansion and antiferromagnetism in the actinide oxypnictide N.sub.p./sub.FeAsO
- 1.0384229 - FZÚ 2013 RIV US eng J - Journal Article
Klimczuk, T. - Walker, H.C. - Springell, R. - Shick, Alexander - Hill, A.H. - Gaczyński, P. - Gofryk, K. - Kimber, S.A.J. - Ritter, C. - Colineau, E. - Griveau, J.C. - Bouexiere, D. - Eloirdi, R. - Cava, R.J. - Caciuffo, R.
Negative thermal expansion and antiferromagnetism in the actinide oxypnictide NpFeAsO.
Physical Review. B. Roč. 85, č. 17 (2012), "174506-1"-"174506-10". ISSN 1098-0121
R&D Projects: GA ČR(CZ) GAP204/10/0330; GA AV ČR IAA100100912
Institutional research plan: CEZ:AV0Z10100520
Keywords : magnetic materials * neutron scattering * electronic structure
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.767, year: 2012
http://link.aps.org/doi/10.1103/PhysRevB.85.174506
A neptunium analog of the LaFeAsO tetragonal layered compound has been synthesized and characterized by a variety of experimental techniques. The occurrence of long-range magnetic order below a critical temperature TN = 57 K is suggested by anomalies in the temperature-dependent magnetic susceptibility, electrical resistivity, Hall coefficient, and specific-heat curves. First-principles electronic structure calculations based on the local spin density plus Coulomb interaction and the local density plus Hubbard-I approximations provide results in good agreement with the experimental findings.
Permanent Link: http://hdl.handle.net/11104/0213941
Number of the records: 1