High-frequency current oscillations in solid dielectrics

 
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1989 (EN)

High-frequency current oscillations in solid dielectrics (EN)

Dervos, C (EN)
Kayafas, EA (EN)
Bourkas, PD (EN)

Experimental evidence is provided that common industrial organic insulators (phenol-impregnated pressboard, bakelite) may exhibit negative differential resistance. Insulators have been subjected to high non-uniform electric fields with maximum values which between 0.2 MV cm-1 and 1.2 MV cm-1 and, according to experimental data, the time-averaged I-V characteristics showed a distinct N-type NDR region, followed by an S-type NDR region, for electric fields near the pre-breakdown region. Various impulse voltages have been applied to solid dielectric and periodic current pulses were received by the anode electrode. An attempt has been made to interpret and correlate the above results with similar phenomena which occur in semiconductors with a negative differential resistance. (EN)

journalArticle (EN)

Dielectric Materials (EN)
Solid Dielectrics (EN)
Current Oscillations (EN)
Electric Fields (EN)
Electric Insulating Materials (EN)
Semiconductor Materials (EN)
Physics, Applied (EN)
Negative Differential Resistance (EN)


Journal of Physics D: Applied Physics (EN)

English

1989 (EN)

10.1088/0022-3727/22/2/014 (EN)
ISI:A1989T332300014 (EN)
22 (EN)
2 (EN)
322 (EN)
316 (EN)
0022-3727 (EN)

IOP PUBLISHING LTD (EN)




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