Direct and indirect electrocaloric measurements using multilayer capacitors

S. Kar-Narayan; N. D. Mathur

doi:10.1088/0022-3727/43/3/032002

Direct and indirect electrocaloric measurements using multilayer capacitors

Materials Science 2015-05-14 v1 Other Condensed Matter

Authors: S. Kar-Narayan , N. D. Mathur

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We report the discovery of serendipitous electrocaloric effects in commercial multilayer capacitors based on ferroelectric BaTiO3. Direct thermometry records ~0.5 K changes due to 300 kV cm-1, over a wide range of temperatures near and above room temperature. Similar results are obtained indirectly, via thermodynamic analysis of ferroelectric hysteresis loops. We compare and contrast these two results. Optimised electrocaloric multilayer capacitors could find applications in future cooling technologies.

Keywords

thermal properties of materials thermoelectric energy harvesting cryogenics

Cite

@article{arxiv.0912.1978,
  title  = {Direct and indirect electrocaloric measurements using multilayer capacitors},
  author = {S. Kar-Narayan and N. D. Mathur},
  journal= {arXiv preprint arXiv:0912.1978},
  year   = {2015}
}

Comments

12 pages, 3 figures

Related papers

View all related →