Solid State Cooling with Advanced Oxide Materials
Abstract
The major discoveries of the program include: 1) discovery of high-performance materials based on compositionally-graded materials with figures of merit 3-12-times larger than traditional materials; 2) study of candidate high-performance materials possessing strong lattice-polarization coupling and electric-field response and insights into how strain can be used to deterministically tune important parameters; 3) quantification of intrinsic, extrinsic, and secondary contributions to thermal response of polydomain films; 4) quantification of elastocaloric effects in materials that cause the total pyroelectric and electrocaloric coefficients to be different and is related to the piezoelectric effect which causes a lattice expansion which subsequently lowers the frequencies of the lattice vibrations and, in tum, increase the vibrational entropy; 5) development novel, microfabrication-based platforms which provide multi-dimensional control and manipulation of materials. Based on our measurements we conclude that minimizing the resistive heating in these thin films is critical for electrocaloric refrigeration applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 03, 2014
- Accession Number
- ADA606539
Entities
People
- David G. Cahill
- Lane W Martin
- William P King
Organizations
- University of Illinois Urbana–Champaign