Hysteretic behavior of the diluted random-field Ising system Fe/sub 0. 70/Mg/sub 0. 30/Cl/sub 2/

Journal Article · Tue Nov 01 04:00:00 EST 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.28.5361· OSTI ID:5484456

Wong, P; Cable, J W

We report a systematic neutron scattering study of the hysteretic behavior of the randomly diluted metamagnet Fe/sub 0.70/Mg/sub 0.30/Cl/sub 2/ in magnetic fields, which is presumed to correspond to the three-dimensional Ising model in random fields. In general, we find that the low-temperature state of the system is disordered if it is approached from the disordered paramagnetic phase, but ordered if it is approached from the zero-field-ordered phase. In contrast to typical spin-glass systems, time dependence is observed for the field-cooled states. Plausible explanations for these phenomena and further experiments are suggested.

• Research Organization: Schlumberger-Doll Research, Ridgefield, Connecticut 06877
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5484456
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 28:9; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALKALINE EARTH METAL COMPOUNDS
ANTIFERROMAGNETISM
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
CRYSTAL MODELS
DIFFRACTION
HALIDES
HALOGEN COMPOUNDS
HYSTERESIS
IRON CHLORIDES
IRON COMPOUNDS
ISING MODEL
MAGNESIUM CHLORIDES
MAGNESIUM COMPOUNDS
MAGNETIC FIELDS
MAGNETISM
MATHEMATICAL MODELS
NEUTRON DIFFRACTION
SCATTERING
THREE-DIMENSIONAL CALCULATIONS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE