Growing Oxide Layers in electrostatic fields

AI Thread Summary
An electrostatic field can potentially influence the growth of oxide layers, but the permanence of the electric field in such layers is questionable. In the case of an aluminum domed van de Graaff generator, while an oxide layer may form upon exposure to oxygen, it is unlikely to retain a permanent electric field once the external field is removed. Electrets demonstrate permanent electric fields, but the mechanisms involved differ significantly from those in oxide layers formed under electrostatic conditions. The consensus suggests that any electric field induced in the oxide would likely dissipate once the applied field is withdrawn. Thus, creating a permanent electric field in this manner appears improbable.
Samson4
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Can an electrostatic field be used to create an oxide layer that has a permanent electric field?

For a specific example; an aluminium domed van de graaff generator with no oxide layer. If it is turned on and allowed to contact oxygen, would the oxide layer store a permanent electric field?
 
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There are devices called electrets that have a permanent electric field, like a permanent magnet has a permanent magnetic field. The dielectric layer in a charged capacitor has a "permanent" electric field, at least until leakage currents neutralize the charge.
 
phyzguy said:
There are devices called electrets that have a permanent electric field, like a permanent magnet has a permanent magnetic field. The dielectric layer in a charged capacitor has a "permanent" electric field, at least until leakage currents neutralize the charge.
Yes I know; but, can one be made in the manner I described?
 
Samson4 said:
Yes I know; but, can one be made in the manner I described?

I don't think so. I think the applied electric field in an oxide grown in this fashion would just relax when you took away the applied field. Why should it persist?
 
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