Journal
ENERGY TECHNOLOGY
Volume 4, Issue 2, Pages 244-248Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201500205
Keywords
barium; calorimetry; ceramics; doping; solid-state structures
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Funding
- Indian National Science Academy (INSA), New Delhi, India, through Department of Science and Technology (DST), New Delhi, under INSPIRE faculty award [ENG-01]
- INSA Research Grant under Young Scientists Scheme
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The caloric behavior of bulk (Ba0.865Ca0.135Zr0.1078Ti0.8722Fe0.01Nb0.01)O-3 (BCZTO-FeNb) with respect to multiple physical inputs is investigated. Predictions were made by using modified Maxwell's relations in conjunction with independent experimental data. BCZTO-FeNb possesses significant potential for multiple caloric effects. A peak electrocaloric effect of 0.5K (307K) was predicted for electric fields of 0-3kVmm(-1), significantly higher than for other BCZTO-based compositions. A maximum elastocaloric cooling of 1.17K (298K) was achieved for an applied stress of 0-200MPa (3kVmm(-1)). Finally, a new component of the electric-field-driven caloric effect is reported as the inverse piezocaloric effect, with a maximum temperature change of 0.4K (298K).
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