NEUTRON DIFFRACTION STUDY OF METALLIC ERBIUM
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
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