نتایج جستجو برای: Remanence
تعداد نتایج: 1669 فیلتر نتایج به سال:
A large, .distinct negative aeromagnetic anomaly of over 2000 nT associated with microcline-sillimanite-quartz gneisses in the Russell area, northwest Adirondack Mountains, was previously shown to be remanence-dominated, although the carriers of remanence were not well documented. Russell Belt gneisses have a strong natural remanent magnetization with steep remanence directions, D = 263 ø, I = ...
Measurements are reported on the in-plane and the perpendicular components of the remanence a tape acquires on passing through the steady field of a recording head. The tape coatings were oriented and unoriented particles of y-Fe,O,, oriented CrO, and unoriented Co-substituted y-Fe,O,. The two writing heads used had 10pmand 2.25pm-gaps, respectively. In each case the in-plane magnetization incr...
In studies of fine magnetic particle systems, saturation remanence is often measured during warming from liquid helium temperature in order to determine the distribution of blocking temperatures. These data have usually been treated as if they are unaffected by magnetic interactions. However, this treatment is often inconsistent with the experimental data. Furthermore, the thermal decay of satu...
A paper published in 1996 examined the problems involved in truly deleting data from magnetic storage media and also made a mention of the fact that similar problems affect data held in semiconductor memory. This work extends the brief coverage of this area given in the earlier paper by providing the technical background information necessary to understand remanence issues in semiconductor devi...
Plots of the dc demagnetisation remanence us. the isothermal remanence have been used t o investigate manybody effects in soft magnetic materials and recording media. Nonlinearities in the plots are ascribed to the demagnetising effects of the manybody interactions in each case.
In this work we study the magnetic remanence exhibited by Josephson junction arrays in response to an excitation with an AC magnetic field. The effect, predicted by numerical simulations to occur in a range of temperatures, is clearly seen in our tridimensional disordered arrays. We also discuss the influence of the critical current distribution on the temperature interval within which the arra...
Citation: Kubo H, Nakamura N, Kotsugi M, Ohkochi T, Terada K and Fukuda K (2015) Striped domains of coarse-grained magnetite observed by X-ray photoemission electron microscopy as a source of the high remanence of granites in the Vredefort dome. Front. Earth Sci. 3:31. doi: 10.3389/feart.2015.00031 Striped domains of coarse-grained magnetite observed by X-ray photoemission electron microscopy a...
Conventional magnetic stratigraphy was not possible due to the young age (<780 ka) of the recovered sediments. Taking advantage of the exceptionally high sedimentation rates, however, we were able to successfully adopt several other less-utilized magnetostratigraphic techniques. Foremost among these was the identification of short periods of anomalous geomagnetic polarity (i.e., events and excu...
We present a side-channel attack based on remanence decay in volatile memory and show how it can be exploited effectively to launch a non-invasive cloning attack against SRAM PUFs — an important class of PUFs typically proposed as lightweight security primitive with low overhead by using the existing memory of the underlying device. We validate our approach against two SRAM PUF implementations ...
Achieving magnetic remanence at single isolated metal sites dispersed at the surface of a solid matrix has been envisioned as a key step toward information storage and processing in the smallest unit of matter. Here, we show that isolated Dy(III) sites distributed at the surface of silica nanoparticles, prepared with a simple and scalable two-step process, show magnetic remanence and display a ...
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