Zobrazeno 1 - 10
of 496
pro vyhledávání: '"F. Vasiliu"'
Autor:
Valentin Craciun, Doina Craciun, M.D. Mihai, Bogdan Stefan Vasile, P. Ionescu, I. Mercioniu, F. Vasiliu, D. Pantelica, H. Petrascu
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 450:85-89
The annealing of crystalline defects in Si single crystals created by ion implantation at room temperature was investigated. Silicon single crystals were firstly implanted at room temperature with 1.345 MeV Au1+ ions at fluences from 1 × 1013 to 1
Publikováno v:
Materials Characterization. 152:245-252
Among the rare-earth-free systems that are currently investigated in search for novel permanent magnet solutions for various applications, with special emphasis on the magnets required to operate in extreme conditions, the FePt binary system, where t
Thermodynamic, structural and magnetic studies of phase transformations in MnAl nanocomposite alloys
Publikováno v:
Materials Characterization. 140:1-8
We have undertaken a temperature-dependent, investigation of the thermodynamics, structure, morphology and magnetism of two MnAl nanocomposite alloys (Mn60Al40 and Mn55Al45). Differential scanning calorimetry (DSC) studies allowed the determination o
Publikováno v:
Journal of Magnetism and Magnetic Materials
FePt-based alloys are currently under scrutiny for their possible use as materials for perpendicular magnetic recording. Another possible application is in the field of permanent magnets without rare-earths, magnets that may operate at higher tempera
Autor:
F. Vasiliu, S. Vaucher, I. Mercioniu, A. Pantelica, D. Pantelica, R. Nicula, O. Crisan, Manuela Elena Stir, A.D. Crisan
Publikováno v:
Intermetallics
Nano-composite magnets with L 1 0 structure derived from binary FePt alloys and prepared as melt-spun ribbons are of current interest due to their higher operating temperature and the ability to be cast as a two-phase magnet with exchange spring magn
Publikováno v:
Ceramics International. 40:11601-11609
Tetragonal Sr2FeMoO6 powders were prepared by the sol–gel and solid-state reaction methods. The structure, microstructure and magnetic characteristics of the double perovskite Sr2FeMoO6 in the form of as-prepared powders and classical sintered cera
Autor:
Marin Cernea, Lucian Pintilie, Roxana Trusca, Gheorghe Aldica, F. Vasiliu, C. Plapcianu, I. Mercioniu, Iuliana Pasuk, Robert Lowndes, C. Bartha
Publikováno v:
Journal of the European Ceramic Society. 33:2483-2490
Double perovskite Sr 2 FeMoO 6 was prepared by two ways consisting in sol–gel technique and solid-state reaction method. The resulting powders from gel and mixed oxides precursors showed microstructures consisting of very fine grains (0.5–0.8 μm
Publikováno v:
Philosophical Magazine. 94:174-189
The FePt system has important perspectives as high-temperature corrosion-resistant magnets. In the form of rapidly solidified melt-spun ribbons, FePt-based magnets may exhibit in certain cases a two-phase hard–soft magnetic behaviour. The present p
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 444:022009
Autor:
Cristian M. Teodorescu, M. Popa, Lucian Diamandescu, M. Feder, V. Cosoveanu, Virginia Danciu, F. Vasiliu, Lucian Baia, Monica Baia
Publikováno v:
Journal of Materials Science. 44:358-364
Fe(III)-doped TiO2 aerogels are prepared by acid catalyzed sol–gel method followed by supercritical drying, and then heat treatment. Raman spectra together with X-ray diffraction (XRD) and selected area electron diffraction (SAED) patterns of the i