ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Field dependence of the anomalous Hall effect coefficient of granular alloys with giant Magnetoresistance (1997)

Granovskii, A. B. ; Kalitsov, A. V. ; Brouers, F.

Springer

JETP letters 65 (1997), S. 509-513

add to mindlist on the mindlist

Details

ISSN: 1090-6487

Keywords: 73.40.Hm ; 72.20.My ; 75.70.Pa

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract It is shown theoretically that the anomalous Hall effect (AHE) coefficient R s of magnetic granular alloys exhibiting giant magnetoresistance (GMR) depends strongly and, in the general case, nonmonotonically on the magnetic field as a result of the effect of the field on the character of the charge-carrier scattering and the AHE. The experimental data, presented by H. Sato, H. Hemmi, Y. Kobayashi et al., J. Appl. Phys. 76, 6919 (1994), on the field dependence R s (H) in Co-Ag granular alloys at low temperatures are explained. The presence of a maximum in the field dependence |R s (H)| in annealed Co-Ag alloys attests to the fact that skew scattering plays a dominant role in the formation of the AHE and that the main carriers of the AHE in these alloys are states whose spin polarization is directed oppositely to the magnetization. The presence of a minimum in this dependence for unannealed samples indicates nonuniformity of the granule size distribution.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1134/1.567384

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Multifractal analysis. A new method for the characterization of the morphology of multicomponent polymer systems (1993)

Blacher, S. ; Brouers, F. ; Fayt, R. ; [et al.]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part B: Polymer Physics 31 (1993), S. 655-662

add to mindlist on the mindlist

Details

ISSN: 0887-6266

Keywords: multifractal analysis of morphology of multicomponent polymer systems ; Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: It has been demonstrated that use of polymeric emulsifiers under usual processing conditions in the melt state is a powerful technique for preparing polymer alloys. Digitized representation of optical micrographs of thin sections of blends of a low-density polyethylene and polystyrene (20 wt % PE-80 wt % PS) containing 2 and 5 wt % of two hydrogenated polybutadiene-polystyrene block copolymers exhibit different degrees of homogeneity as well as different morphological structures which can be studied by a multifractal analysis. We show how these differences are reflected in the f(α) spectrum of singularities which can be obtained by a box counting method in the canonical approximation. We have found a correlation between the f(α) curves and the mechanical properties of the corresponding samples: the samples which area the less multifractals have the best mechanical properties. © 1993 John Wiley & Sons, Inc.

Additional Material: 4 Ill.