{"title":"压电会导致负电容吗?","authors":"Justin C. Wong, S. Salahuddin","doi":"10.1109/IEDM.2014.7047046","DOIUrl":null,"url":null,"abstract":"A thermodynamic model was constructed to quantitatively analyze the negative capacitance effect in the presence of piezoelectricity, electrostriction, and ferroelectricity. The model shows that pure piezoelectricity and higher-order electromechanical coupling can provide a negative capacitance effect in principle, but are not strong enough in practice. Negative capacitance is predicted to occur due to ferroelectric polarization switching and not due to piezoelectricity.","PeriodicalId":309325,"journal":{"name":"2014 IEEE International Electron Devices Meeting","volume":"73 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Can piezoelectricity lead to negative capacitance?\",\"authors\":\"Justin C. Wong, S. Salahuddin\",\"doi\":\"10.1109/IEDM.2014.7047046\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A thermodynamic model was constructed to quantitatively analyze the negative capacitance effect in the presence of piezoelectricity, electrostriction, and ferroelectricity. The model shows that pure piezoelectricity and higher-order electromechanical coupling can provide a negative capacitance effect in principle, but are not strong enough in practice. Negative capacitance is predicted to occur due to ferroelectric polarization switching and not due to piezoelectricity.\",\"PeriodicalId\":309325,\"journal\":{\"name\":\"2014 IEEE International Electron Devices Meeting\",\"volume\":\"73 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 IEEE International Electron Devices Meeting\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IEDM.2014.7047046\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 IEEE International Electron Devices Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEDM.2014.7047046","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Can piezoelectricity lead to negative capacitance?
A thermodynamic model was constructed to quantitatively analyze the negative capacitance effect in the presence of piezoelectricity, electrostriction, and ferroelectricity. The model shows that pure piezoelectricity and higher-order electromechanical coupling can provide a negative capacitance effect in principle, but are not strong enough in practice. Negative capacitance is predicted to occur due to ferroelectric polarization switching and not due to piezoelectricity.
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