Alloy-Like Behavior of the Thermal Conductivity of Nonsymmetric Superlattices. Issue 4 (2nd October 2017)

• Record Type: Journal Article
• Authors: Chavez-Ángel, E.; Komar, P.; Jakob, G.
• Is Part Of: Nanoscale and microscale thermophysical engineering. Volume 21:Issue 4(2017)
• Page Start: 287
• Page End: 295
• Publication Date: 2017-10-02
• Subjects: Superlattices -- thermal conductivity -- interface thermal resistance -- Norbury's rule; Heat -- Transmission -- Periodicals; Heat -- Transmission; Electronic journals; Periodicals; 621.402
• DOI: 10.1080/15567265.2017.1354106
• Languages: English
• ISSNs: 1556-7265

Abstract

ABSTRACT: In this work, we show a phenomenological alloy-like fit of the thermal conductivity of ( A ) d 1 :( B ) d 2 superlattices with d 1 ≠ d 2 ; that is, a nonsymmetric structure. The presented method is a generalization of the Norbury rule of the summation of thermal resistivities in alloy compounds. Namely, we show that this approach can be also extended to describe the thermal properties of a crystalline and ordered system composed of two or more elements and has a potentially much wider application range. Using this approximation, we estimate that the interface thermal resistance depends on the period and the ratio of materials that form the superlattice structure.