Geophysical Research Letters · 1988 · 16 citations · 9 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsMechanical Behavior Of MaterialsThermodynamicsFerromagnetic MaterialsFerromagnetismMagnetic AnisotropyMagnetic CharacterizationMagnetization ProcessesRemanent MagnetizationDemagnetization BehaviorHydrostatic PressureShear StressStress Path AnalysisStress Path EffectsThermal Remanent MagnetizationThermoremanent MagnetizationUniaxial Strain
The influence of stress path on thermoremanent magnetization (TRM) was studied experimentally. Specimens with a TRM were cyclically loaded under three different conditions: hydrostatic pressure, uniaxial compression, or uniaxial strain. Initial loading resulted in a large decrease in magnetization at stress and permanent demagnetization at the termination of the stress cycle. The observed magnetic changes were much larger for non‐hydrostatic loading than for hydrostatic compression. With subsequent loading to the same peak stress over the same path, stress induced variations in magnetization were smaller and tended to become reproducible; shear stress produced greater magnetic perturbations.
9