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      https://www.ias.ac.in/article/fulltext/boms/032/03/0259-0262

    • Keywords

       

      PMN–PT; electrocaloric effect; morphotropic phase boundary; PLD.

    • Abstract

       

      The electrocaloric effect is calculated for PMN–PT relaxor ferroelectric thin film near morphotropic phase boundary composition. Thin film of thickness, ∼ 240 nm, has been deposited using pulsed laser deposition technique on a highly (111) oriented platinized silicon substrate at 700°C and at 100 mtorr oxygen partial pressure. Prior to the deposition of PMN–PT, a template layer of LSCO of thickness, ∼ 60 nm, is deposited on the platinized silicon substrate to hinder the pyrochlore phase formation. The temperature dependent P–E loops were measured at 200 Hz triangular wave operating at the virtual ground mode. Maximum reversible adiabatic temperature change, 𝛥 𝑇 = 31 K, was calculated at 140°C for an external applied voltage of 18 V.

    • Author Affiliations

       

      D Saranya1 Ayan Roy Chaudhuri1 Jayanta Parui1 S B Krupanidhi1

      1. Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India
    • Dates

       
  • Bulletin of Materials Science | News

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