Articles
  • Electrocaloric properties of BaTiO3/La0.7Sr0.3MnO3/BaTiO3 multilayer thin films prepared by chemical solution deposition

  • Jae-Uk Leea, Jeong-Eun Limb, Ji-Soo Yukb, Sam-Haeng Yib,c, Myung-Gyu Leeb,c, Joo-Seok Parkc,
    Young-Gon Kima and Sung-Gap Leea,b,*

  • aMajor in Ceramic Engineering, School of Materials Science and Engineering, Gyeongsang National University, Jinju 52828, Korea
    bDepartment of Materials Engineering and Convergence Technology, Research Institute for Green Convergence Technology, Gyeongsang National University, Jinju 52828, Korea
    cBusiness Support Division, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Korea
    dDepartment of Electronics, Chosun College of Science and Technology, Gwangju 61453, Korea

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

BaTiO3/La0.7Sr0.3MnOs/BaTiO3 multilayer films are fabricated using the chemical solution deposition and spin-coating method. The upper BT film exhibits an average grain size of approximately 42 nm, indicating a uniform and dense microstructure. The single-coated film has an average thickness ranging from 40 to 45 nm. A phase transition temperature of approximately 4 °C is observed in all films. The BT/LSMO/BT multilayer film, coated with LSMO four times, demonstrates a maximum dielectric constant of 2008 at 20 °C. The BT/LSMO/BT multilayer film, coated with LSMO two times, shows a ΔT of 0.59 K at 24 °C. The remnant polarization, coercive field, and ΔT/ΔE of the BT/LSMO/BT multilayer film, coated with LSMO four times, are 19.8 μC/cm2, 42 kV/cm, and 4.56 mKcm/kV, respectively


Keywords: BaTiO3/La0.7Sr0.3MnOs/BaTiO3, Multilayer films, Electrocaloric effect, Polarization.

This Article

  • 2023; 24(6): 941-946

    Published on Dec 31, 2023

  • 10.36410/jcpr.2023.24.6.941
  • Received on Jul 18, 2023
  • Revised on Sep 19, 2023
  • Accepted on Sep 30, 2023

Correspondence to

  • Sung-Gap Lee

  • aMajor in Ceramic Engineering, School of Materials Science and Engineering, Gyeongsang National University, Jinju 52828, Korea
    bDepartment of Materials Engineering and Convergence Technology, Research Institute for Green Convergence Technology, Gyeongsang National University, Jinju 52828, Korea
    Tel : +82-10-2686-4427 Fax: +82-55-772-1689

  • E-mail: lsgap@gnu.ac.kr