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

Journal Article · Sun Jun 01 00:00:00 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), Vol. 51:6
• Country of Publication: United States
• Language: English

Related Subjects

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