Using polarized neutron reflectometry, we obtained separate depth profiles for pinned and unpinned magnetization across the interface of a ferromagnet/antiferromagnet bilayer as a function of the sign of exchange bias. The pinned and unpinned magnetization depth profiles are nonuniform and extend well beyond the chemical interface, suggesting an interfacial region magnetically distinct from its...

S. Hu,1,2 E. Appel,1 V. Hoffmann,1 W. W. Schmahl3 and S. Wang2 1 Institut für Geologie und Paläontologie, Universität T übingen, Sigwartstrasse 10, 72076 T übingen, Germany. E-mail: [email protected] 2Nanjing Institute of Geography and L iminology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, P.R. China 3 Institut für Mineralogie, Petrologie und Geochemie, Unive...

The traditional magnetic storage mechanisms ~both analog and digital! apply an external field signal H(t) to a hysteretic magnetic material, and read the remanent magnetization M (t), which is ~roughly! proportional to H(t). We propose a new analog method of recovering the signal from the magnetic material, making use of the shape of the hysteresis loop M (H). The field H , ‘‘stored’’ in a regi...

[1] We present a protocol for using paleomagnetic analysis to determine the absolute orientation of core recovered from the SAFOD borehole. Our approach is based on determining the direction of the primary remanent magnetization of a spot core recovered from the Great Valley Sequence during SAFOD Phase 2 and comparing its direction to the expected reference field direction for the Late Cretaceo...

The structural and magnetic properties of rare-earth nanocomposite magnets of a (Nd,Dy)(Fe,Co,Nb,B)5.5 single layer and a (Nd,Dy)(Fe,Co,Nb,B)5.5/α-Fe multilayer prepared by sputtering and heat treatment have been investigated. Incomplete exchange coupling behaviour is observed in the Ti-buffered NdDyFeCoNbB + 40 wt%Fe single layer magnet. After annealing, the laminated nanostructure consisting ...