MAGNETIC SUSCEPTIBILITY OF METALLIC EUROPIUM

Journal Article · Wed Jun 15 04:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.118.1493· OSTI ID:4145914

Bozorth, R M; Van Vleck, J H

The susceptibility of europium was measured from 1.3 to 300 deg K in fields up to 12 000 guass. This metal was found not to be ferromagnetic, but to have at low temperatures a very high paramagnetic susceptibility, about forty times higher than for the free ion or hydrated salts. Variation of susceptibility with field strength was observed below 100 deg K. The saturation curvature at low temperatures was very large, and practically independent of temperature. The susceptibility at high temperatures was consistent with a divalent model. The magnetic behavior at low temperatures was hard to interpret on the basis of a divalent ion and was more readily explained with a trivalent one for which the theory was developed. Metallurgical evidence, however, indicated that metallic europium was divalent even at low temperatures. On the other hand, it was generally believed that europium was trivalent in EuIr/sub 2/, but if one used the conventional molecular field theory the reported ferromagnetism of EuIr/sub 2/ could not be ascribed to Eu/sup 3+/ with a value of the exchange field consistent with that in GdIr/sub 2/. (auth)

• Research Organization: Bell Telephone Labs., Murray Hill, N.J.; Harvard Univ., Cambridge, Mass.
• NSA Number: NSA-14-018287
• OSTI ID: 4145914
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 118; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATOMIC MODELS
DIAGRAMS
EUROPIUM
EUROPIUM COMPOUNDS
FERROMAGNETIC MATERIALS
GADOLINIUM COMPOUNDS
IONS
IRIDIUM COMPOUNDS
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETISM
MEASURED VALUES
METALLURGY
METALS
MOLECULES
PARAMAGNETISM
PHYSICS
SUSCEPTIBILITY
TEMPERATURE