Giant magnetoelastic distortions of the crystal structure of the weakly anisotropic compound UFe/sub 2/

Journal Article · Sun Jun 01 04:00:00 EDT 1980 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:6646832

Popov, Y F; Levitin, R Z; Zeleny, M; Deryagin, A V; Andreev, A V

We investigate the temperature dependences of the crystal-lattice parameters, of the anisotropy, and of the Young's modulus of the intermetallide compound UFe/sub 2/. The contribution of the uranium ions to the magnetic moment of this compound is negligible (..mu../sub U/=0.06..mu../sub B/), owing to the almoft complete delocalization of the uranium 5f electrons. The measured magnetic anisotropy is relatively small (K/sub 1/approx. =-10/sup 6/ erg/cm/sup 3/ at 0 K). However, the transition to the magnetically ordered state (T/sub c/=170 K) is accompanied by large rhombohedral distortions of the UFe/sub 2/ crystal structure and by a considerable anomaly of the Young's modulus, thus attesting to a large value of the magnetoelastic interaction in this compound (..delta..K/sub 1/ /sup m/eapprox. =-8 x 10/sup 6/ erg/cm/sup 3/).

• Research Organization: Moscow State University
• OSTI ID: 6646832
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 51:6; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE ALLOYS
ALLOYS
ANISOTROPY
DATA
EXPERIMENTAL DATA
INFORMATION
INTERMETALLIC COMPOUNDS
IRON ALLOYS
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
MECHANICAL PROPERTIES
NUMERICAL DATA
PHYSICAL PROPERTIES
TEMPERATURE DEPENDENCE
URANIUM ALLOYS
YOUNG MODULUS