NEUTRON DIFFRACTION STUDY OF METALLIC ERBIUM

Journal Article · Wed Mar 01 04:00:00 EST 1961 · Journal of Applied Physics (U.S.)

DOI:https://doi.org/10.1063/1.2000494· OSTI ID:4057482

Cable, J W; Wollan, E O; Koehler, W C; Wilkinson, M K

Neutron diffraction measurements were made on erbium single crystals in the temperature range 298 deg to 4.2 deg K. The material is ant iferromagnetic below 80 deg K and ferromagnetic below 20 deg K. In the antiferromagnetic region, the magnetic scattering consists of satellite reflections correspondmg to a modulation of the magnetic scattering amplitude along the c axis. The spacing and intensity distribution of these satellites show two distinct subregions of antiferromagnetism. In the upper region, between 80 nd 52 deg K, the data suggest a sinusoidal modulation of the magnitude of the c-axis component of magnetic moment with a period of 3.5 c/sub o/. Between 52 deg and 20 deg K the wavelength of the modulation varies continuously from 3.5 deg c/sub o/ to 4.0 c/ sub o/. In addition, there is a squaring up of the modulation and a simultaneous ordering of the component of the moment normal to the c axis. Below 20 deg K the material is basically ferromagnetic with a moment of 7.2 mu /sub B/ directed parallel to the c axis. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-014868
• OSTI ID: 4057482
• Journal Information: Journal of Applied Physics (U.S.), Journal Name: Journal of Applied Physics (U.S.) Vol. Vol: 32: No. 3, Suppl.; ISSN JAPIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

DISTRIBUTION
ERBIUM
FERROMAGNETIC MATERIALS
FREQUENCY
MAGNETIC MOMENTS
MAGNETISM
MEASURED VALUES
METALS
MODULATION
MONOCRYSTALS
PHYSICS
REFLECTION
SATELLITES
SCATTERING
TEMPERATURE