Russian Physics Journal

, Volume 37, Issue 4, pp 324–328 | Cite as

Electron instability, electrical conductivity, and the electret effect in insulators

  • V. Kh. Kozlovskii
Semiconductor And Insulator Physics


The origin of dielectric singularity is examined by calculating the electrostatic energy of a cylinder containing a periodic negative-charge density and periodically repeating planes containing positive charges. When the planes deviate from their initial positions, the cells acquire dipole moments, and the energy is a function of the deviations. The condition for the stability of the unpolarized state is that the charge density at the middle of a cell exceeds the mean charge over the cell. When these are equal, stability in the charge disposition is lost and conductivity arises. A three-dimensional array is considered for the polarizable ions in the polar cells, which is located between short-circuited electrodes and has cavity gaps by the electrodes. Microscopic-field calculations show that the field in a gap in general does not vanish on electronic instability. The phenomenon is compared with the electret effect.


Electrical Conductivity Dipole Moment Charge Density Positive Charge Initial Position 
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© Plenum Publishing Corporation 1994

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  • V. Kh. Kozlovskii

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