Terahertz (THz) sciences and technologies have contributed to a rapid development of wide range applications expanded the frontiers in fundamental science. Spintronic terahertz emitters offer conceptual advantages since spin orientation magnetic layer can be easily controlled either by externally applied field or internal distribution determined specific shape elements. Here, we report switchab...

The presence of a narrow shape and size distribution for magnetite crystals within magnetotactic organisms suggests strongly that there are species-specific mechanisms that control the process of biomineralization. In order to explore the extent of this control, cultures of Aquaspirillum magnetotacticum in the exponential growth phase were exposed to increasing magnetic pulses with the aim of s...

Sediment cores from 13 deep boreholes (1– 4.1 km) distributed within Axios zone in Northern Greece have been studied by means of palaeomagnetism. Both low field magnetic susceptibility and intensity of the natural remanent magnetization (NRM) indicate rather weakly magnetised materials. A set of 390 samples have been subjected to thermal and alternative field demagnetization. Isothermal remanen...

Excellent exposures on wave-cut platforms display along the northeastern Taiwan coast a thick Oligocene succession that suffered low-grade metamorphism. The strata show anisotropic ductile-brittle deformation associated with the Late Cenozoic Taiwan mountain building event. Paleomagnetic analyses suggest probable contraction-induced remagnetization of remanent magnetization, taking place before...

Ultrafine-grained die-upset Nd-Fe-B magnets are of importance because they provide a wide researching space to redesign the textured structures. Here is presented a route to obtain a new die-upset magnet with substantially improved magnetic properties. After experiencing the optimized heat treatment, both the coercivity and remanent magnetization of the Dy-Cu press injected magnets increased su...

Monolayer cultures of pulmonary macrophages (PM) from 11 smokers (S) and 9 nonsmokers (NS) were incubated with submicrometric ferromagnetic Fe3O4 particles for one hour. After magnetization by an externally applied pulse magnetic field, the aligned Fe3O4 particles, located in the phagosomes and secondary lysosomes of the PM, emanated a remanent magnetic field which decayed with time. The initia...