Stress and electric field induced phase transitions for ultra high energy conversion in ferroelectrics

被引:2
作者
Taxil, Gaspard [1 ,2 ,3 ,4 ,5 ]
Sebald, Gael [2 ,5 ]
Nguyen, Tung Thanh [2 ,4 ]
Ducharne, Benjamin [1 ,2 ]
Nguyen, Hung Hoang [4 ]
Ono, Takahito [3 ]
Kuwano, Hiroki [2 ,4 ]
Lallart, Mickael [1 ]
机构
[1] Univ Lyon, INSA Lyon, LGEF EA682, F-69621 Lyon, France
[2] Univ Lyon, Univ Claude Bernard Lyon 1, Tohoku Univ, CNRS,ELyTMaX IRL 3757,INSA Lyon,Ctr Lyon, Sendai, Japan
[3] Tohoku Univ, Grad Sch Engn, Sendai 9808579, Japan
[4] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, 6-6-10 Aramaki-Aoba,Aoba Ku, Sendai, Miyagi 9808579, Japan
[5] Tohoku Univ, ELyTMaX Lab Mat Solut Ctr MaSC, Room 502,2-1-1 Katahira,Aoba Ku, Sendai 9808577, Japan
关键词
Ferroelectric; Phase transition; Single crystal; Modeling; Energy harvesting; PT SINGLE-CRYSTALS; PMN-32-PERCENT-PT CRYSTALS; PZN-PT; BEHAVIOR;
D O I
10.1016/j.actamat.2023.119367
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This work focuses on energy harvesting of ferroelectric relaxors PMN-25PT and PZN-8PT single crystals with high uniaxial stress and electric field. Ericsson cycle, which consists of applying and releasing electric field and stress at different steps of the cycle, has been used. A large energy density for PZN-8PT high as 410 mJ/cm3 was obtained. Different working temperatures were tested by experiment and modeled via Landau-Devonshire theory. Optimal working temperatures were identified for high level energy conversion and were successfully predicted by simulation. It appeared that the optimum working temperature was different from that optimizing the d33. Polarization mechanisms induced by these extreme conditions for energy harvesting are explained in the frame of experimental and modeling results. The results obtained at high stress levels tend to indicate that operating along the polarization direction yields the best results, which contradicts conclusions drawn in the case of domain engineered crystals.
引用
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页数:11
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