Magnetization and magnetic susceptibilities of GdH/sub 3/, HoH/sub 3/, ErH/sub 3/ and YbH/sub 3/. [1. 2 to 4. 2 K]

Technical Report · Thu Jan 01 04:00:00 EST 1976

OSTI ID:7122911

Flood, D J

The magnetic susceptibility of powdered samples of HoH/sub 3/, ErH/sub 3/, GdH/sub 3/ and YbH/sub 3/ have been measured in the temperature range from 4.2 to 1.2 K. Two broad, local maxima are observed in the variation of chi versus T for GdH/sub 3/, with maxima in (delta chi/delta T) versus T at 1.8 K and 3.3 K. The inverse susceptibilities for HoH/sub 3/ and ErH/sub 3/ both obey a Curie--Weiss law over a limited range (4.2 to 2.6 K and 4.2 to 2 K, respectively) with values for the Weiss constant of -4.25 K and -1.11 K, and effective moments of 8.6 and 7.7 Bohr magnetons, respectively. The susceptibility of YbH/sub 3/ is independent of temperature over the range investigated. High-field magnetization measurements yield extrapolated saturation moments of 7.0 +- 0.25 Bohr magnetons/ion for GdH/sub 3/, 6.1 +- 0.2 Bohr magnetons/ion for HoH/sub 3/ and 3.74 +- 0.11 Bohr magnetons/ion for ErH/sub 3/. In addition, ErH/sub 3/ exhibits a van Vleck paramagnetism in the high-field region. (auth)

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
• OSTI ID: 7122911
• Report Number(s): N-76-22078; NASA-TM-X-71897; E-8683
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360604* -- Materials-- Corrosion
Erosion
& Degradation
CURIE-WEISS LAW
ERBIUM COMPOUNDS
ERBIUM HYDRIDES
GADOLINIUM COMPOUNDS
GADOLINIUM HYDRIDES
HOLMIUM COMPOUNDS
HOLMIUM HYDRIDES
HYDRIDES
HYDROGEN COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MAGNETIZATION
PARAMAGNETISM
PHYSICAL PROPERTIES
POWDERS
RARE EARTH COMPOUNDS
TEMPERATURE DEPENDENCE
ULTRALOW TEMPERATURE
VAN VLECK THEORY
YTTERBIUM COMPOUNDS
YTTERBIUM HYDRIDES