Reversible and irreversible magnetization in soft iron-based ... .fr
The magnetization process has been investigated in nonoriented SiFe alloys over a wide induction range, from ... in polycrystalline nickel.' We have found that ...
G. Bertotti, F. Fiorillo, and M. Pasquale Istituto Elettrotecnico Nazionale GaIileo Ferraris and INFM-GNSM, 10125 Torino, Italy
Cso M. d’Azeglio 42,
The magnetization process has been investigated in nonoriented SiFe alloys over a wide induction range, from about 10 - 4 T to technical saturation. Special attention has been devoted to the role of grain size (s). The low-field behavior of the initial magnetization curve is characterized by a number of remarkable features: ( 1) the permeability pr tends, in the limit of vanishing applied field H, to a constant value, independent of (s); (2) the increase of ,LL~with H exhibits a nonlinear behavior, in contrast with the Rayleigh law; and (3) the larger the grain size, the steeper the rise of pu, with H. This effect is attributed to an increased ease of propagation of locally induced magnetization reversals at larger (s) values. Experiments put in evidence a correlation between pu, and the length of propagation /1, which is found to vary as p, 1’2. However, at high inductions (above about 1 T), larger grains imply a reduction of permeability;due to the growth of unfavorable crystallographic textures. Grain size also affects power losses to a large extent. Measurements performed at 1 and 1.5 T show that the hysteresis component Ph and the excess eddy component P,, respectively, vary as l/m and m in the investigated range 45 pm
by making incremental field reversals [6]. The Jiles-Ath- erton [7], [8] theory of ferromagnetic hysteresis at first described only irreversible hysteretic magnetization ...
Feb 1, 2002 - transition metals such as manganese (Mn), zinc (Zn), nickel (Ni), cobalt .... The initial permeability is measured in a closed magnetic circuit (ring core) ..... The permeability of a ferrite is a function of temperature. It generally .
look at the water corrosion phenomena applicable to metals and alloys, but excluding both ..... steel). The nickel of austenitic stainless steel can only be released ...
Jun 10, 2011 - We also checked using local velocimetry measurements done on fluorescent ... detector at times t, and at each x-position in the mi- crochannel ...
Feb 23, 2014 - fragmented country rock, juvenile clasts, and hypabyssal intru- sions may extend several .... canic rocks giving a K-Ar age of 15 to 18 Ma (Fig. 1;.
Total DNA was extracted using QIAamp® DNA Stool Mini kit (Qiagen). Genes coding for V3 region of 16SrRNA were amplified by PCR with 30 cycles using primers W49 and 6-Fam-labelled W104. .... Improvements of polymerase chain.
vector in two-dimensional complex vector space, where α and β are both complex numbers representing the amplitudes of the two components of the quantum ...
the spin transfer is a quasi-interfacial effect and, in our calculation .... m;y and vF is the Fermi velocity. .... layer increases, with saturation at a minimum level when.
number so that colour 0 is the darkest and colour 26 is the brightest. The hardware requires these grey scales to be translated into the hardware code for the ...
The Lord of The Rings, The Fellowship of the Ring, The Two Towers and The Return of The King and the names of the characters, items, events and places ...
Distribue le contenu des cartouches Soft Care® de 600 mL de savon liquide pour les mains. • Permet des réglages d'écoulement de produit de 0,75 à 1,2 mL.
Mar 17, 2011 - Academic position in Experimental Physics: Functional and ... courses related to soft matter physics on the master level. They are expected ... not proficient in Dutch, will be provided language training in order to be able to also.
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carrying the plough in the transport position and controlling the working depth. ... or to the top hole of the control beam on the '65' Tractor. 6. Remove the .... material or workmanship. ... in the possession of the Company, Manufacturer, Agent,.
Good level (8 months in an English speaking country) ... of the Junior Enterprises (J.A.D.E) of. CUST: CUSTED. â« Sports : Volley-ball, Rugby, Hiking. â« Reading.
cause of their wide industrial uses, their chemistry has been extensively investi- ... Physical Properties of Cyclopentadiene and Dicyclopentadiene ... There is a strong ten- ..... the Lewis acid is removed by a caustic solution and the resin is furt
