Effects of interfacial pseudo-spin coupling fluctuations on the dielectric properties of ferroelectric superlattices

Yin Zhong Wu; Wei Min Zhang; Ming Rong Shen; Zhen Ya Li

doi:10.1142/S0217979205032036

Effects of interfacial pseudo-spin coupling fluctuations on the dielectric properties of ferroelectric superlattices

Yin Zhong Wu, Wei Min Zhang, Ming Rong Shen, Zhen Ya Li

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Using effective-field theory with correlations, we investigate the effects of interfacial pseudo-spin coupling fluctuations on the susceptibility and polarization of ferroelectric superlattices within the framework of transverse Ising model. It is found that the interfacial coupling fluctuations increase the susceptibility in the low temperature region. For a strong interfacial coupling, the phase transition temperature decreases with the strength of fluctuations of the interfacial coupling. The dependence of the susceptibility on the superlattice period of BaTiO₃/SrTiO₃ are plotted for different interfacial coupling fluctuations strength. At room temperature, when the interfacial coupling fluctuation increases, the peak position of the susceptibility will shift to a large superlattice period.

Original language	English
Pages (from-to)	3193-3203
Number of pages	11
Journal	International Journal of Modern Physics B
Volume	19
Issue number	20
DOIs	https://doi.org/10.1142/S0217979205032036
Publication status	Published - 2005 Aug 10

All Science Journal Classification (ASJC) codes

Statistical and Nonlinear Physics
Condensed Matter Physics

Access to Document

10.1142/S0217979205032036

Cite this

@article{4250aaf1fa414e40ad60259e509aa931,

title = "Effects of interfacial pseudo-spin coupling fluctuations on the dielectric properties of ferroelectric superlattices",

abstract = "Using effective-field theory with correlations, we investigate the effects of interfacial pseudo-spin coupling fluctuations on the susceptibility and polarization of ferroelectric superlattices within the framework of transverse Ising model. It is found that the interfacial coupling fluctuations increase the susceptibility in the low temperature region. For a strong interfacial coupling, the phase transition temperature decreases with the strength of fluctuations of the interfacial coupling. The dependence of the susceptibility on the superlattice period of BaTiO3/SrTiO3 are plotted for different interfacial coupling fluctuations strength. At room temperature, when the interfacial coupling fluctuation increases, the peak position of the susceptibility will shift to a large superlattice period.",

author = "Wu, {Yin Zhong} and Zhang, {Wei Min} and Shen, {Ming Rong} and Li, {Zhen Ya}",

note = "Funding Information: This work was supported by the National Science Council of ROC under Contract Nos. NSC-92-2112-M-006-024, NSC-92-2112-M-006-004, the National Science Foundation of China under the Grant No. 10204016, and the Open Project of Jiangsu Laboratory of Advanced Functional Materials under the Grant No. 05KFJJ008.",

year = "2005",

month = aug,

day = "10",

doi = "10.1142/S0217979205032036",

language = "English",

volume = "19",

pages = "3193--3203",

journal = "International Journal of Modern Physics B",

issn = "0217-9792",

publisher = "World Scientific Publishing Co. Pte Ltd",

number = "20",

}

TY - JOUR

T1 - Effects of interfacial pseudo-spin coupling fluctuations on the dielectric properties of ferroelectric superlattices

AU - Wu, Yin Zhong

AU - Zhang, Wei Min

AU - Shen, Ming Rong

AU - Li, Zhen Ya

N1 - Funding Information: This work was supported by the National Science Council of ROC under Contract Nos. NSC-92-2112-M-006-024, NSC-92-2112-M-006-004, the National Science Foundation of China under the Grant No. 10204016, and the Open Project of Jiangsu Laboratory of Advanced Functional Materials under the Grant No. 05KFJJ008.

PY - 2005/8/10

Y1 - 2005/8/10

N2 - Using effective-field theory with correlations, we investigate the effects of interfacial pseudo-spin coupling fluctuations on the susceptibility and polarization of ferroelectric superlattices within the framework of transverse Ising model. It is found that the interfacial coupling fluctuations increase the susceptibility in the low temperature region. For a strong interfacial coupling, the phase transition temperature decreases with the strength of fluctuations of the interfacial coupling. The dependence of the susceptibility on the superlattice period of BaTiO3/SrTiO3 are plotted for different interfacial coupling fluctuations strength. At room temperature, when the interfacial coupling fluctuation increases, the peak position of the susceptibility will shift to a large superlattice period.

AB - Using effective-field theory with correlations, we investigate the effects of interfacial pseudo-spin coupling fluctuations on the susceptibility and polarization of ferroelectric superlattices within the framework of transverse Ising model. It is found that the interfacial coupling fluctuations increase the susceptibility in the low temperature region. For a strong interfacial coupling, the phase transition temperature decreases with the strength of fluctuations of the interfacial coupling. The dependence of the susceptibility on the superlattice period of BaTiO3/SrTiO3 are plotted for different interfacial coupling fluctuations strength. At room temperature, when the interfacial coupling fluctuation increases, the peak position of the susceptibility will shift to a large superlattice period.

UR - http://www.scopus.com/inward/record.url?scp=23844529535&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23844529535&partnerID=8YFLogxK

U2 - 10.1142/S0217979205032036

DO - 10.1142/S0217979205032036

M3 - Article

AN - SCOPUS:23844529535

SN - 0217-9792

VL - 19

SP - 3193

EP - 3203

JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

IS - 20

ER -

Effects of interfacial pseudo-spin coupling fluctuations on the dielectric properties of ferroelectric superlattices

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this