Dipole moment and spontaneous polarization of ferroelectric nanoparticles in a nonpolar fluid suspension

被引：61

作者：

Basun, S. A. ^{[1
,2
]}

Cook, G. ^{[1
,3
]}

Reshetnyak, V. Yu. ^{[4
]}

Glushchenko, A. V. ^{[5
]}

Evans, D. R. ^{[1
]}

机构：

[1] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[2] Universal Technol Corp, Dayton, OH 45432 USA

[3] Azimuth Corp, Dayton, OH 45432 USA

[4] Natl Taras Shevchenko Univ Kyiv, UA-01601 Kiev, Ukraine

[5] Univ Colorado, Colorado Springs, CO 80918 USA

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 02期

关键词：

PHASE-TRANSITION; BARIUM-TITANATE; SURFACE; FILMS; LIGHT; SIZE;

D O I：

10.1103/PhysRevB.84.024105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stressed ferroelectric nanoparticles, less than 10 nm in diameter, are investigated in a nonpolar fluid. Measuring ferroelectric properties of the smallest achieved BaTiO3 ferroelectric nanoparticles allows for the determination of dipole moment and spontaneous polarization as a function of size and concentration; the results are significantly greater than in bulk BaTiO3. This is achieved by using a direct measurement of the displacement current density and either integrating over half a period or fitting the experimental results using the derivative of the Langevin function.

引用

页数：8

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