Structural and physical properties of the U.sub.9./sub.Fe.sub.7./sub.Ge.sub.24./sub. uranium germanide

0368500 - FZÚ 2012 RIV GB eng J - Článek v odborném periodiku
Henriques, M.S. - Berthebaud, D. - Pereira, L.C.J. - Lopes, E.B. - Branco, M.B.C. - Noël, H. - Tougait, O. - Šantavá, Eva - Havela, L. - Carvalho, P.A. - Goncalves, A.P.
Structural and physical properties of the U₉Fe₇Ge₂₄ uranium germanide.
Intermetallics. Roč. 19, č. 7 (2011), s. 841-847. ISSN 0966-9795. E-ISSN 1879-0216
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: ternary alloy system * x-ray * crystal structure * electrical resistance and thermopower * magnetisation
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.649, rok: 2011

A new ternary compound, U(9)Fe(7)Ge(24), prep. by arc-melting and heating. X-ray diffraction, magnetization, specific heat and electrical transport measurements.Tetragonal structure, 14/mmm. 3 U, 8 Ge , and 3 Fe sites, stacks of infinite chains along the a and b axis. Strong interactions U and Ge can be predicted. Magnetic and specific heat measurements do’nt show any magnetic transition. Curie Weiss behaviour with a negative paramagnetic Curie temp. theta p = -94 K and reduced effective mag. moment of mu(eff) = 2.13 mu(B) / U indicate the compound is rather far from onset of magnetism, presumably due to a strong hybridisation of the 5f and ligand states. Electrical transport shows a metallic behaviour.
Trvalý link: http://hdl.handle.net/11104/0202828