US 12,467,664 B2
Electrocaloric effect element
Sakyo Hirose, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Jun. 3, 2022, as Appl. No. 17/831,471.
Application 17/831,471 is a continuation of application No. PCT/JP2020/030807, filed on Aug. 13, 2020.
Claims priority of application No. 2019-231472 (JP), filed on Dec. 23, 2019.
Prior Publication US 2022/0307735 A1, Sep. 29, 2022
Int. Cl. F25B 21/00 (2006.01)
CPC F25B 21/00 (2013.01) [F25B 2321/001 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrocaloric effect element comprising:
a laminate including an electrode layer mainly including Pt and a ceramic layer that are stacked; wherein
the electrode layer mainly includes Pt such that Pt has a largest % by mass in the electrode layer;
the ceramic layer has a perovskite structure and mainly includes a ceramic including Pb, Sc, and Ta, a content ratio of Sc is y, a content ratio of Ta is 1-y, and a range of the y is about 0.450≤y≤about 0.495; and
the ceramic layer mainly includes the ceramic such that the ceramic has a largest % by mass in the ceramic layer.