Magnetic susceptibility of AnRe₂ compounds

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:5150127

Brodsky, M. B.; Trainor, R. J.; Aldred, A. T.; Sowers, C. H.

The compounds AnRe/sub 2/, where An = Th, U, Np, and Pu all have the MgZn/sub 2/-type hexagonal Laves phase structure. Measurements of their magnetic susceptibilities have been made from 2-300 K. Whereas ThRe/sub 2/, URe/sub 2/, and PuRe/sub 2/ have essentially temperature-independent susceptibilities, NpRe/sub 2/ is ferromagnetic with T/sub c/ = 47 K. The paramagnetic data for NpRe/sub 2/ follow a modified Curie-Weiss law, chi-che/sub 0/ = C/(T-THETA) from 60-230 K with THETA = 46.9 K and C equivalent to an effective moment, P/sub eff/ = 2.11 ..mu../sub B/. The ordered moment ..mu../sub 0/ = 0.90 ..mu../sub B/ and the results are consistent with other actinide compounds having good local moment behavior. The electronic specific heat of URe/sub 2/ = 34 mJ/(mole-K/sup 2/) is large enough to indicate the possibility of spin-fluctuation behavior in this compound.

• Research Organization: Argonne National Lab., Ill. (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5150127
• Report Number(s): CONF-771127--15
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE COMPOUNDS
ELECTRICAL PROPERTIES
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
NEPTUNIUM COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLUTONIUM COMPOUNDS
RHENATES
RHENIUM COMPOUNDS
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
THORIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSURANIUM COMPOUNDS
URANIUM COMPOUNDS
VERY LOW TEMPERATURE