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Multicaloric effect in bi-layer multiferroic composites

Research output: Contribution to journalArticle

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Multicaloric effect in bi-layer multiferroic composites. / Vopson, Melvin Marian; Zhou, Dayu; Caruntu, G.

In: Applied Physics Letters, Vol. 107, No. 18, 182905, 03.11.2015.

Research output: Contribution to journalArticle

Harvard

Vopson, MM, Zhou, D & Caruntu, G 2015, 'Multicaloric effect in bi-layer multiferroic composites', Applied Physics Letters, vol. 107, no. 18, 182905. https://doi.org/10.1063/1.4935216

APA

Vopson, M. M., Zhou, D., & Caruntu, G. (2015). Multicaloric effect in bi-layer multiferroic composites. Applied Physics Letters, 107(18), [182905]. https://doi.org/10.1063/1.4935216

Vancouver

Vopson MM, Zhou D, Caruntu G. Multicaloric effect in bi-layer multiferroic composites. Applied Physics Letters. 2015 Nov 3;107(18). 182905. https://doi.org/10.1063/1.4935216

Author

Vopson, Melvin Marian ; Zhou, Dayu ; Caruntu, G. / Multicaloric effect in bi-layer multiferroic composites. In: Applied Physics Letters. 2015 ; Vol. 107, No. 18.

Bibtex

@article{9a6f8a0849ed47fe83898e75a48624c4,
title = "Multicaloric effect in bi-layer multiferroic composites",
abstract = "The multicaloric effect was theoretically proposed in 2012 and, despite numerous follow up studies, the effect still awaits experimental confirmation. The main limitation is the fact that the multicaloric effect is only observed at a temperature equal to the transition temperature of the magnetic and electric phases coexisting within a multiferroic (MF) (i.e., T ≈ Tc m ≈ Tc e ). Such condition is hard to fulfill in single phase MFs and a solution is to develop suitable composite MF materials. Here, we examine the multicaloric effect in a bi-layer laminated composite MF in order to determine the optimal design parameters for best caloric response. We show that magnetically induced multicaloric effect requires magnetic component of heat capacity smaller than that of the electric phase, while the layer thickness of the magnetic phase must be at least 5 times the thickness of the electric phase. The electrically induced multicaloric effect requires the magnetic layer to be 10% of the electric phase thickness, while its heat capacity must be larger than that of the electric phase. These selection rules are generally applicable to bulk as well as thin film MF composites for optimal multicaloric effect.",
keywords = "Composite multiferroics, heat capacity, multicaloric effect, solid state refrigeration",
author = "Vopson, {Melvin Marian} and Dayu Zhou and G. Caruntu",
year = "2015",
month = nov
day = "3",
doi = "10.1063/1.4935216",
language = "English",
volume = "107",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "18",

}

RIS

TY - JOUR

T1 - Multicaloric effect in bi-layer multiferroic composites

AU - Vopson, Melvin Marian

AU - Zhou, Dayu

AU - Caruntu, G.

PY - 2015/11/3

Y1 - 2015/11/3

N2 - The multicaloric effect was theoretically proposed in 2012 and, despite numerous follow up studies, the effect still awaits experimental confirmation. The main limitation is the fact that the multicaloric effect is only observed at a temperature equal to the transition temperature of the magnetic and electric phases coexisting within a multiferroic (MF) (i.e., T ≈ Tc m ≈ Tc e ). Such condition is hard to fulfill in single phase MFs and a solution is to develop suitable composite MF materials. Here, we examine the multicaloric effect in a bi-layer laminated composite MF in order to determine the optimal design parameters for best caloric response. We show that magnetically induced multicaloric effect requires magnetic component of heat capacity smaller than that of the electric phase, while the layer thickness of the magnetic phase must be at least 5 times the thickness of the electric phase. The electrically induced multicaloric effect requires the magnetic layer to be 10% of the electric phase thickness, while its heat capacity must be larger than that of the electric phase. These selection rules are generally applicable to bulk as well as thin film MF composites for optimal multicaloric effect.

AB - The multicaloric effect was theoretically proposed in 2012 and, despite numerous follow up studies, the effect still awaits experimental confirmation. The main limitation is the fact that the multicaloric effect is only observed at a temperature equal to the transition temperature of the magnetic and electric phases coexisting within a multiferroic (MF) (i.e., T ≈ Tc m ≈ Tc e ). Such condition is hard to fulfill in single phase MFs and a solution is to develop suitable composite MF materials. Here, we examine the multicaloric effect in a bi-layer laminated composite MF in order to determine the optimal design parameters for best caloric response. We show that magnetically induced multicaloric effect requires magnetic component of heat capacity smaller than that of the electric phase, while the layer thickness of the magnetic phase must be at least 5 times the thickness of the electric phase. The electrically induced multicaloric effect requires the magnetic layer to be 10% of the electric phase thickness, while its heat capacity must be larger than that of the electric phase. These selection rules are generally applicable to bulk as well as thin film MF composites for optimal multicaloric effect.

KW - Composite multiferroics

KW - heat capacity

KW - multicaloric effect

KW - solid state refrigeration

U2 - 10.1063/1.4935216

DO - 10.1063/1.4935216

M3 - Article

VL - 107

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 18

M1 - 182905

ER -

ID: 3088997