F. F. Putris
University of California, San Diego
5 Papers
8 Citations
F. F. Putris is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Magnetoresistance & Magnetization. The author has an hindex of 3, co-authored 5 publications.
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Papers
Magnetoresistance of magnetite
TL;DR: In this article, the magnetoresistance behavior of Fe3O4 in polycrystalline thin film, powder compact, and single-crystal form is compared and it is shown that negative magnetoreduction with peaks at the coercive field, observed in thin films and powder compacts but not in the single crystal, is due to fieldinduced alignment of the magnetization of contiguous grains.
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Low-frequency electromagnetic technique for nondestructive evaluation
Yacine Dalichaouch,Alan L. Singsaas,F. F. Putris,Alexander R. Perry,Peter V. Czipott +4 more
- 05 May 2000
TL;DR: A low frequency electromagnetic technique using sensitive room temperature magnetoresistive (MR) sensors for a variety of nondestructive evaluation (NDE) applications was developed in this article. But this technique consists of applying a low frequency ac magnetic field to the sample and detecting the sample response; the sensitivity of the MR sensor allows to detect weak responses from the sample without applying too large an excitation field, particularly in the case of human tissue.
6
Permanent magnet-based dipole for a small storage ring
F. F. Putris,W. Vernon +1 more
- 06 May 1991
TL;DR: In this article, a dipole magnet driven by NdBFe permanent magnet material with iron for field shaping was constructed and the gap is 1.5 inches high and 4 inches wide; the magnet length is 8 inches.
4
Unusual magnetic behavior in Nd–Fe–B alloy powder compacts
TL;DR: In this paper, the authors reported an unusual magnetic behavior in powders prepared by spark-eroding (in liquid Ar) alloy electrodes containing approximately equal weights of Fe and Nd2Fe14B in an effort to prepare composite permanent magnets.
Magnetoresistance of chromium dioxide powder compacts
TL;DR: In this article, the half-metallic ferromagnetic powders of the halfmetallic granular metal are dielectric granular metals and the negative magnetoresistance is due to tunneling between contiguous magnetagnetic particles along a critical path with a spin-dependent Coulomb gap.