LOW-TEMPERATURE MAGNETIC REMANENCE, MOLECULAR FIELD, AND APPROACH TO SATURATION OF HOLMIUM METAL
- Resource Type
- Journal Article
- Authors
- Source
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D; Vol: 117; Other Information: Orig. Receipt Date: 31-DEC-60
- Subject
- METALS, CERAMICS, AND MATERIALS ATOMS
BOHR MAGNETON
CRYSTALS
ELECTRIC FIELDS
HOLMIUM
HYSTERESIS
IRON
LABORATORY EQUIPMENT
LOW TEMPERATURE
MAGNETIC MOMENTS
MAGNETISM
MEASURED VALUES
MOTION
NICKEL
PAULI PRINCIPLE
QUANTITATIVE ANALYSIS
QUANTUM MECHANICS
SAMPLING
SPECTROSCOPY
SPIN
STANDARDS
- Language
- English
- ISSN
- 0031-899X
Magnetization approaching absolute magnetic saturation was achieved for polycrystalline holmium metal. At 1.3 ction prod- K and 70.000 gauss, the magnetic moment is approaching 4.0 Bohr magnetons per atom of holmium in contrast to the 10 Bohr magnetons per atom expected on the basis of the spectroscopically determined quantum numbers. The actual results are explained on the basis of crystalline electric field splitting of the ground term of holmium and application of the Pauli exclusion principle. In the liquid belium range, there is a pronounced hysteresis; i.e., the moment at 10,000 gauss is 50% higher in decreasing fields than in increasing fields. The remanence is 0.22 Bohr magneton per atom of holmium at 4.2 ction prod- K and 0.42 Bohr magneton per atom at 1.3 ction prod- K. A sample motion technique was used to measure the magnetic moment of the 5-gram sample. The equipment was calibrated with iron and nickel. (auth)