A microscopic approach to finite-size effects in sintered metallic powders

Lambert, C. J. (1985) A microscopic approach to finite-size effects in sintered metallic powders. Journal of Low Temperature Physics, 59 (1-2). pp. 123-134. ISSN 0022-2291

Full text not available from this repository.

Abstract

A microscopic theory is developed of finite-size effects in sintered metallic powders. In particular a model is constructed for the low frequency vibrational modes. It is argued that the bonding between atoms on adjacent surfaces of neighboring grains is extremely weak, 10 -3 -10 -4 of its bulk value. Choosing the physical parameters accordingly, a constant density of "shaking box" states can be obtained. However, this behavior is not universal. A more complex density of states arises from slightly different choices of physical parameters and leads to a variety of temperature dependences for the sinter/liquid He Kapitza conductance at ultralow temperatures.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Low Temperature Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
137679
Deposited By:
Deposited On:
08 Oct 2019 12:10
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 12:17