Change of absorption spectra in type-Ibdiamond with heavy neutron irradiation

Autor:	Yoshimi Mita
Rok vydání:	1996
Předmět:	Materials science Absorption spectroscopy Fermi level Center (category theory) Diamond engineering.material Type (model theory) symbols.namesake Vacancy defect symbols engineering Neutron Irradiation Atomic physics
Zdroj:	Physical Review B. 53:11360-11364
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.53.11360
Popis:	For type-Ib diamond neutron irradiated and annealed at 900\ifmmode^\circ\else\textdegree\fi{}C, it has been found that the nitrogen vacancy (NV) center is reduced in density with increasing irradiation in the dose range above a certain value, and instead the 575 and 594 nm centers appear abruptly. This fact is interpreted in terms of change in the charge state of defects correlated with large change in the Fermi level produced by heavy irradiation. Based on the present results, a model is proposed for the 575 nm center: (NV${)}^{0}$, a defect released one electron from the NV center. It has been observed that the growth nature of the 594 nm center with irradiation is different between types Ia and Ib. This difference is explained by difference in the Fermi level of both types. \textcopyright{} 1996 The American Physical Society.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be8c29f869ef7f9032975d6f261d5d6c https://doi.org/10.1103/physrevb.53.11360 Zobrazit plný text záznamu