LOCAL ATOMIC STRUCTURE OF AMORPHOUS METALS

Atomic structure of pressure-induced amorphous semiconductors

The paper will briefly review and discuss results of our investigations on the atomic correlations in amorphous Zn-Sb, GaSb, GaSb-Ge and Al-Ge alloys. These semiconductor alloys were prepared by solid state reactions in the course of heating the quenched highpressure phases. Structure of the final products was studied by neutron diffraction for the Al-Ge, GaSb and GaSb-Ge alloys and by transmis...

Local fluctuations and ordering in liquid and amorphous metals.

A molecular-dynamics study of the structure and dynamics of monatomic liquids and glasses is presented. The local atomic structure and its development during the quenching process are analyzed in terms of fluctuations of atomic-level stresses and their correlations. This approach extends the basis for the description of the local structure from the usually employed scalar quantity, the local de...

Local organization and atomic clustering in multicomponent amorphous steels

V. Yu. Kazimirov,1 Despina Louca,1 M. Widom,2 X.-J. Gu,1 S. J. Poon,1 and G. J. Shiflet3 1Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA 2Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA 3Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904, USA Received 2 July 2008; re...

Computer simulation of atomic structure of rhenium-based amorphous alloys

ساختار کلاسهایی از حلقه های z- موضعی و c- موضعی the structure of some classes of z-local and c-local rings

فرض کنیمr یک حلقه تعویض پذیر ویکدار موضعی باشدو(j(r رایکال جیکوبسن r و(z(r مجموعه مقسوم علیه های صفر حلقه r باشد.گوییم r یک حلقه z- موضعی است هرگاه j(r)^2=. .همچنین برای یک حلقه تعویض پذیر r فرض کنیم c یک عنصر ناصفر از (z( r باشد با این خاصیت که cz( r)=0 گوییم حلقه موضعی r یک حلقه c - موضعی است هرگاه و{0 و z(r)^2={cو z(r)^3=0, نیز xz( r)=0 نتیجه دهد که x عضو {c,0 } است. در این پایان نامه ساخ...