Caloric Effects in Perovskite Oxides

• Published in: Advanced materials interfaces Vol. 6; no. 15
• Main Authors: Barman, Abhisikta, Kar‐Narayan, Sohini, Mukherjee, Devajyoti
• Format: Journal Article
• Language: English
• Published: Weinheim John Wiley & Sons, Inc 01-08-2019
• Subjects: caloric effects; Cooling effects; interfaces; Magnetic properties; Order parameters; Oxides; perovskite oxide; Perovskites; Phase transitions; Refrigeration; solid‐state refrigeration; Stress distribution; Thin films
• ISSN: 2196-7350; 2196-7350
• DOI: 10.1002/admi.201900291

Perovskite oxides show an amazing diversity of electronic and magnetic properties along with a myriad of structural variants and phase transitions. Large thermal changes may be driven near the ferroic phase transitions in perovskite oxides using magnetic, electric, and stress fields to manipulate conjugate order parameters. The ensuing magnetocaloric, electrocaloric, and mechanocaloric effects can be utilized for environment‐friendly and high‐efficiency solid‐state cooling applications. In this review the details of these caloric effects in perovskite oxides both from a chronological perspective and from the viewpoint of the recent advances in multiple caloric phenomena are described. The authors highlight the role of interfaces in oxide thin films for the different caloric effects and address some of the outstanding challenges for the fundamental understanding and practical implementation of perovskite oxides in solid state refrigeration.
Perovskite oxides show an amazing diversity of physical properties along with many interesting structural variants and phase transitions. Large thermal changes may be driven near the ferroic phase transitions in perovskite oxides using magnetic, electric, and stress fields to manipulate conjugate order parameters. The ensuing magnetocaloric, electrocaloric, and mechanocaloric effects can be utilized for environment‐friendly and high‐efficiency solid‐state cooling applications.