Thermally stimulated currents in natural diamonds

Author

Gorokhovatsky, Yu.A. ; Grigoriev, L.V. ; Kvaskov, V.B. ; Pitirimov, A.N. ; Temnikov, K.L.

Author_Institution

Herzen State Pedagogical Univ., St. Petersburg

fYear

1994

fDate

7-9 Sep 1994

Firstpage

505

Lastpage

510

Abstract

The results of thermally stimulated depolarization currents in natural Yakut diamonds are presented. In the temperature range 200-650 K two peaks of TSD currents are observed; a low-temperature peak at 325 K and a high-temperature peak at 540 K. Repeated thermal cycling in the above temperature range leads to transformation of TSD current curves: the value of the high-temperature peak decreases and the value of the low temperature peak increases. The calculation of parameters of electrically active defects responsible for observed TSD current peaks gives the following values: W_lt=0.68 eV, ω_lt=5 10⁸ s^-1; W_ht=18 eV, ω_ht=5 10⁸ s^-1

Keywords

defect states; diamond; dielectric polarisation; electrical conductivity; thermally stimulated currents; 200 to 650 K; 325 K; 540 K; C; Yakut diamonds; electrically active defects; natural diamonds; thermal cycling; thermally stimulated depolarization currents; Current measurement; Electrodes; Frequency; Optical materials; Polarization; Radiation detectors; Resistance heating; Temperature distribution; Thermal conductivity; Thermal resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.514821

Filename

514821