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Journal of Nanoparticle Research
Erschienen in: Journal of Nanoparticle Research 2/2013

01.02.2013 | Research Paper

Domain wall contribution to the electrocaloric effect in BaTiO3 nanoparticle: a phase-field investigation

verfasst von: B. Li, J. B. Wang, X. L. Zhong, F. Wang, B. L. Liu, Y. C. Zhou

Erschienen in: Journal of Nanoparticle Research | Ausgabe 2/2013

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Abstract

The domain wall contribution to the electrocaloric effect (ECE) in the BaTiO3 (BTO) nanoparticle at room temperature is investigated using a phase-field model combined with thermodynamics analysis. The results show that the domain structure which relates to the size has a significant effect on the ECE in the BTO nanoparticle. When the size of the BTO nanoparticle decreases, the domain structure undergoes a transition from a multidomain structure to a monodomain structure. In the multidomain BTO nanoparticle, the adiabatic temperature change increases with increasing of the domain wall density and domain wall width. In the monodomain BTO nanoparticle, the adiabatic temperature change almost retains constant with the value of 0.95 K which is smaller than that in the multidomain structure. The variation of the adiabatic temperature change at different domain structure is attributed to the domain wall contribution to ECE.
Vorheriger Artikel The effect of alkyl chain length on the level of capping of silicon nanoparticles produced by a one-pot synthesis route based on the chemical reduction of micelle
Nächster Artikel Fulvic acids concentration and pH influence on the stability of hematite nanoparticles in aquatic systems

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Fußnoten
1
BaTiO3 material constants: α 1 = 4.124 × (T-115) × 105, α 11 = −2.097 × 108, α 12 = 7.947 × 108, α 111 = 1.294 × 109, α 112 = 1.95 × 109, α 123 = −2.5 × 109, Q 11 = 0.1, Q 12 = -0.034, Q 44 = 0.029, c 11 = 1.78 × 1011, c 12 = 0.964 × 1011, c 44 = 1.22 × 1011 (in SI units) where T is temperature in °C
 
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Metadaten
Titel
Domain wall contribution to the electrocaloric effect in BaTiO3 nanoparticle: a phase-field investigation
verfasst von
B. Li
J. B. Wang
X. L. Zhong
F. Wang
B. L. Liu
Y. C. Zhou
Publikationsdatum
01.02.2013
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 2/2013
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-013-1427-6

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