Инд. авторы:	Nadolinny V.A., Komarovskikh A.Y., Rakhmanova M.I., Yuryeva O.P., Shatsky V.S., Palyanov Y.N., Guskova M.I.
Заглавие:	New data on the N1 nitrogen paramagnetic center in brownish type IaAB diamonds from MIR pipe
Библ. ссылка:	Nadolinny V.A., Komarovskikh A.Y., Rakhmanova M.I., Yuryeva O.P., Shatsky V.S., Palyanov Y.N., Guskova M.I. New data on the N1 nitrogen paramagnetic center in brownish type IaAB diamonds from MIR pipe // Diamond and Related Materials. - 2021. - Vol.120. - Art.108638. - ISSN 0925-9635. - EISSN 1879-0062.
Внешние системы:	DOI: 10.1016/j.diamond.2021.108638; WoS: 000710136200007;
Реферат:	eng: In this work, two brownish crystals from the Mir pipe attributed to type IaAB have been examined by a complex of spectroscopic methods: electron paramagnetic resonance, infrared, and photoluminescence spectroscopies. A combination of features such as brownish color, optical system 490.7 nm, and paramagnetic centers W7 and 490.7 points out to plastic deformation of the crystals. The W7 is known to be formed as a result of destruction of A-aggregates during plastic deformation while part of the N3V centrers can be formed due to the disruption of the B-aggregates. The narrow-line EPR spectra from the nitrogen-related N3V centers and the P1 centers indicate that the crystals were annealed after plastic deformation. Another feature of the crystals studied is the observation of the well-known paramagnetic N-1 center with only two magnetically inequivalent positions (i.e. with two magnetically inequivalent directions of the C-1-N-1 fragments) instead of the previously reported four. Possible transformation pathways of the W7 center (N-1-C-1-C-2-N-2(+)) into the N1 center (N-1-C-N-2(+)) during the post deformation annealing are considered.
Ключевые слова:	FEATURES; Infrared spectroscopy; Luminescence; Plastic deformation electron paramagnetic resonance; Natural diamonds;
Издано:	2021
Физ. характеристика:	108638