Abstract
The present investigation is a part of work of search for cryoconducting material on the base of high pure Al, which displays optimal electrical and mechanical properties. In Al-Y alloys the electron-impurity and electron-phonon scattering mechanisms in transverse magnetic fields up to 8T, and at helium-hydrogen temperature region were studied. The deviation from Matthiessen’s rule (DMR) was studied at different positions of magnetic field vector relative to axes of a crystal. The results obtained evidence correlation of DMR temperature dependence and magnetic field vector angular position, and were analyzed in terms of competition of two scattering mechanisms, one of which increases scale of the electron distribution function anisotropy in magnetic field, and the other suppresses it. The first one, the umklapp-type scattering is effective when electron orbits in magnetic field would pass through the “hot spots”on the Fermi surface. The second one, diffusion electron-phonon scattering, is effective at magnetic field directions, which provide passage of electron from the Fermi surface section to equivalent one.
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Demyanov, S.E., Drozd, A.A., Petrov, A.V. (1998). Electron Scattering Processes Anisotropy in Al-Y Dilute Alloys in Strong Magnetic Fields. In: Balachandran, U.B., Gubser, D.G., Hartwig, K.T., Reed, R.P., Warnes, W.H., Bardos, V.A. (eds) Advances in Cryogenic Engineering Materials . Advances in Cryogenic Engineering, vol 44. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9056-6_129
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