Formalism of some paramagnets at very low temperatures

Journal Article · Sun Oct 01 04:00:00 EDT 1978 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00117069· OSTI ID:6583129

Goldstein, L

The present work is an extension and generalization of recent work on the very-low-temperature properties of antiferromagnetic, Ising-like, spin-1/2systems in their parallel magnetic field-configuration paramagnetic phase. Here, their perpendicular-field configuration will be explored together with the corresponding phase of partially isotropic exchange-coupled antiferromagnets which exhibit spin flopping in their ordered phase. Cooling to very low temperatures on adiabatic demagnetization of these perpendicular-field-configuration paramagnets will be shown to be less advantageous than that of parallel-field paramagnets. The formalism elaborated here might be submitted to experimental control through the investigation of hydrated cerium magnesium nitrate single crystals. Their Ce/sup 3 +/ magnetic-ion system was shown by us earlier to simulate and effective spin-1/2 Ising antiferromagnet in its ordered phase.

• Research Organization: University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico
• OSTI ID: 6583129
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 33:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
CRITICAL FIELD
CRYSTAL MODELS
ISING MODEL
MAGNETIC FIELDS
MAGNETISM
MATHEMATICAL MODELS
ORDER-DISORDER TRANSFORMATIONS
PARAMAGNETISM
PHASE TRANSFORMATIONS
ULTRALOW TEMPERATURE