Influence of Structural Relaxation Upon the Low Temperature Properties of Metallic Glasses

We have investigated the low temperature properties of metallic glasses. We find that below 1K, the thermal conductivity of metallic glasses (Fe(,40)Ni(,40)P(,14)B(,6), Pd(,77.5)Si(,16.5)Cu(,6) and Zr(,3)Rh) is similar to that of the large class of amorphous materials previously investigated, including other metallic glasses. We have analyzed the influence of the electron-phonon interaction upon the phonon thermal conductivity (kappa)(,ph) (T < 1K) in PdSiCu. Our quantitative results agree well with theoretical prediction. We have found no effect upon (kappa)(,ph) due to boundary scattering in our samples. We have deduced the "glassy" thermal conductivity (kappa)(,glass) for Zr(,3)Rh and PdSiCu from our measurements, where 1/(kappa)(,glass) is the thermal resistivity intrinsic to the disordered state of the solid.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Date dc:date

10000-01-01

Author dc:creator

• Cotts, Eric John

• Physics, Condensed Matter

Language dc:language

eng

Identifier

(UMI)AAI8409900

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/77361