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April 1, 2026Materials Today CommunicationsOpen Access

Electrocaloric effect of hafnium substituted barium titanate with diffused phase transition measured through both indirect and direct methods

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Authors

YZYe ZhaoJZJ Q ZhangYZYun-Long Zhang

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Overview

Investigates the electrocaloric effect in hafnium substituted barium titanate, revealing implications for refrigeration applications.

Key Points

  • The research aims to measure and compare the electrocaloric effect of hafnium substituted barium titanate using different methodologies.
  • Measured electrocaloric effect through indirect and direct methods.
  • Analyzed dielectric constant curves to assess phase transition behavior.
  • Investigated compositions of BaTi 1-x Hf x O 3 with varying hafnium substitution levels.
  • Direct method measurements showed significantly larger electrocaloric effect for BaTi 0.89 Hf 0.11 O 3 compared to indirect measurements.
  • The ECE curve broadens with increasing hafnium content, deviating from Curie temperatures.
  • BaTi 0.77 Hf 0.23 O 3 maintained its ECE over a wide temperature span of 46 K, indicating practical application potential.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/69cd7b695652765b073a96b0https://doi.org/10.1016/j.mtcomm.2026.115101
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