Direct electrocaloric measurement of 0.9PbMg 1-3 Nb 2-3O₃-0.1PbTiO₃ films using scanning thermal microscopyReportar como inadecuado


Direct electrocaloric measurement of 0.9PbMg 1-3 Nb 2-3O₃-0.1PbTiO₃ films using scanning thermal microscopy


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Publication Date: 2016-01-20

Journal Title: Applied Physics Letters

Publisher: AIP

Volume: 108

Issue: 3

Number: 032902

Language: English

Type: Article

Metadata: Show full item record

Citation: Crossley, S., Usui, T., Kar-Narayan, S., Moya, X., Hirose, S., Ando, A., & Mathur, N. D. (2016). Direct electrocaloric measurement of 0.9Pb(Mg_(1/3) Nb_(2/3))O₃-0.1PbTiO₃ films using scanning thermal microscopy. Applied Physics Letters, 108 (3. 032902)

Description: This is the author accepted manuscript. The final version is available from AIP via http://dx.doi.org/10.1063/1.4938758

Abstract: We show that scanning thermal microscopy (SThM) can measure reversible electrocaloric (EC) effects in <40 μm-thick ceramic films of the relaxor ferroelectric 0.9Pb(Mg_(1/3)Nb_(2/3))O₃-0.1PbTiO₃, with the substrate present. We recorded roughly the same non-adiabatic temperature change (±0.23 K) for a thinner film that was driven harder than a thicker film (±31 V μm⁻¹ across 13 μm versus ±11 V μm⁻¹ across 38 μm), because the thicker film lay relatively closer to the substantially larger adiabatic values that we predicted by thermodynamic analysis of electrical data. Film preparation was compatible with the fabrication of EC multilayer capacitors (MLCs), and therefore our measurement method may be exploited for rapid characterisation of candidate films for cooling applications.

Keywords: Temperature measurement, Relaxor ferroelectrics, Ceramics, Multileaf collimators, Polymer films

Sponsorship: B. N. is grateful for support from Gates Cambridge and the Winton Programme for the Physics of Sustainability. X. M. and S.K.-N. are grateful for support from the Royal Society.

Identifiers:

This record's URL: http://dx.doi.org/10.1063/1.4938758https://www.repository.cam.ac.uk/handle/1810/253423

Rights: Attribution-NonCommercial 2.0 UK: England & Wales

Licence URL: http://creativecommons.org/licenses/by-nc/2.0/uk/





Autor: Crossley, S.Usui, T.Kar-Narayan, S.Moya, X.Hirose, S.Ando, A.Mathur, N. D.

Fuente: https://www.repository.cam.ac.uk/handle/1810/253423



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