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A micro-IBIC comparison between natural and CVD diamond (CROSBI ID 80032)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Manfredotti, C. ; Fizzotti, F. ; Mirri, K. ; Polesello, P. ; Vittone, E. ; Jakšić, Milko ; Tadić, Tonči ; Bogdanović, Ivančica ; Pochet, T. A micro-IBIC comparison between natural and CVD diamond // Diamond and related materials, 6 (1997), 2-4; 320-324-x

Podaci o odgovornosti

Manfredotti, C. ; Fizzotti, F. ; Mirri, K. ; Polesello, P. ; Vittone, E. ; Jakšić, Milko ; Tadić, Tonči ; Bogdanović, Ivančica ; Pochet, T.

engleski

A micro-IBIC comparison between natural and CVD diamond

Micro-IBIC (Ion Beam Induced Current) by means of a proton microbeam is a powerful tool for mapping the distribution of charge collection lengths at the surface and in the bulk of diamond samples. Up to now, an evident correspondence between the morphological columnar structure of chemical vapor deposited (CVD) diamond on the "stripy" shape of IBIC maps has been found. This points out the presence of a microcrystalline "electric" structure and the harmful effects of defects associated to grain boundaries on transport properties. In this work we present for the first time a comparison between micro-IBIC maps of cross-sections of a natural IIa diamond and maps obtained in CVD diamond samples. In natural IIa diamond, IBIC maps are homogeneous and the global IBIC spectrum is peaked at the mean collection efficiency of about 10% at an electric field of 7500 V/cm. Strong irradiation produces an uniform increase of the mean collection length in natural IIa diamond whereas, in CVD diamond, it produces an homogenization of the space charge with an increase of the counting rate without any evident increase of the average collection length.

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Podaci o izdanju

6 (2-4)

1997.

320-324-x

objavljeno

0925-9635

Povezanost rada

Fizika

Indeksiranost