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US 2015/0155467 A1Published application
Electrocaloric material
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorYUKIHIRO KANEKO
Life of this patent
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Abstract
Provided is an electrocaloric material formed of a crystal represented by the composition formula Hf1-xAlxOy (where 0.071≦x≦0.091 and y≠0).
Claims8
An electrocaloric material formed of a crystal represented by the composition formula Hf1-xAlxOy (where 0.071≦x≦0.091 and y≠0).
An electrocaloric element, comprising:
- an electrocaloric material formed of a crystal represented by the composition formula Hf1-xAlxOy (where 0.071≦x≦0.091 and y≠0);
- and
- a pair of electrodes provided on the electrocaloric material.
A heating-cooling device, comprising:
- an electrocaloric material formed of a crystal represented by the composition formula Hf1-xAlxOy (where 0.071≦x≦0.091 and y≠0);
- a pair of electrodes provided on the electrocaloric material;
- a power supply part for applying an electric field between the pair of electrodes;
- and
- a control part for switching application of the electric field to the electrocaloric material between a first state that no electric field is applied to the electrocaloric material and a second state that an electric field is applied to the electrocaloric material.
2 more elements
A method for heating and cooling an electrocaloric material, the method comprising the steps of:
- (a) applying an electric field to an electrocaloric material formed of a crystal represented by the composition formula Hf1-xAlxOy (where 0.071≦x≦0.091 and y≠0) to heat the electrocaloric material, and
- (b) stopping the application of the electric field to the electrocaloric material after the step (a) to cool the electrocaloric material.
Dependencies are inferred from the claim text.