The relationship between the transition voltage of the I–V curve of the ferroelectrics and the coercive field of the P–V hysteretic curve

Autor: Feng Hanhua, Zou Xuecheng, Li Shaoping, Wang Ningzhang, Li Xingjiao, Chen Tao, Bao Junbo, Xu Jingping
Rok vydání: 2002
Předmět:
Zdroj: Physics Letters A. 300:93-96
ISSN: 0375-9601
DOI: 10.1016/s0375-9601(02)00726-0
Popis: The relationship between the transition voltage of the I–V curve of the ferroelectrics and the coercive field of the P–V hysteretic curve is calculated. The first mathematical analysis to explain the relation between the transition voltage Vt and the coercive voltage Vc is obtained. The origin of the interrelation between the transition voltage of the I–V curve and the coercive field is that the height of the boundary barrier is inversely proportional to the effective dielectric constant of the near-boundary region, which is dependent on a derivative of polarization on the electric field, ∂P/∂E. The term ξ(eVt) plus the term (enb2δ/dNdPs)(eVc) equals a constant. Vt is the function of Eg, Ps, Vc, and E. There is a linear relation between Vc and Vt. This relationship will induce the matchable relations between the I–V curve and the E–P loop. As long as the Vc of the V–P loop exists, the correspondent Vt of I–V curve will certainly exist. It will be the foundation of a new ferroelectric memory, which operates by the I–V characteristics. These relations are the conditions that can enable nonvolatile memory and nondestructive readout.
Databáze: OpenAIRE
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