Дария Савченко » Публикация
Поделиться публикацией:
Опубликовано
2009-00-00
Опубликовано на SciPeople2010-12-10 14:21:47
ЖурналPhysica B
EPR, ESE and pulsed ENDOR study of the nitrogen donor pairs on quasi-cubic lattice sites in 6H SiC
Аннотация
D-band EPR, X-band FS ESE and pulsed ENDOR studies of the additional nitrogen (N) related centers
observed in highly compensated n-type 6H-SiC wafers are presented. The D-band EPR and X-band FS
ESE spectrum consists of the 14N hyperfine (hf) triplet lines of the N donors incorporated at the two
quasi-cubic (Nc1, Nc2) sites with the intensity ratio of INc1/INc2 ¼ 0.7 and three additional triplet lines.
X-band pulsed ENDOR spectra have shown intense 14N ENDOR signals of Nc1, Nc2 centers and new 14N
lines due to the N related centers N1, N2, N3 with the isotropic hf splitting: 21.04, 26.43, 29.77MHz,
respectively. It was found that the g-tensors of the N2 and N3 triplet lines coincide with those of N on
quasi-cubic Nc2 site. The g-tensor of the third N1 triplet lines corresponds to the average value of the Nc1
and Nc2 spectrum: gðN1Þ 1
2½gðNc1Þ þ gðNc2Þ. It was suggested that N1 center with Aiso ¼ 21.04MHz is
due to the spin coupling between N on two quasi-cubic Nc1 and Nc2 sites while two others are
tentatively attributed to the N pairs formed between N atoms on one quasi-cubic Nc2 site.
Комментарии
Вам необходимо зайти или зарегистрироваться для комментирования
Этот комментарий был удален
Этот комментарий был удален
Этот комментарий был удален