NDLI: EPR study of the peculiarities of incorporating transition metal ions into the diamond structure

Content Provider	Springer Nature Link
Author	Nadolinny, V. A. Baker, J. M. Yuryeva, O. P. Newton, M. E. Twitchen, D. J. Palyav, Yu. N.
Copyright Year	2005
Abstract	In this paper previously obtained data is reviewed and new data is discussed about nickel-containing centers in diamonds. These data are used to suggest interpretation of new data about cobalt-containing centers and to understand the influence of iron on the defects in diamonds grown in the iron system. A newly discovered nickel-nitrogen center has three nitrogen atoms in the first neighbor sphere around the double semi-vacancy and looks like the N3 (P2) center. In diamonds grown in the cobalt system two new types of cobalt-containing centers were found (NLO2 and NWO1). Both centers have electron spinS=1/2 and hyperfine structure from one cobalt ion (I=7/2 with natural abundance 100%). A case can be made for a double semi-vacancy structure for these defects. Special growth of diamond in the system enriched in15N decreased the line width down to 0.6 G, but gave no direct evidence of the existence of nitrogen in the defect structure. Asymmetrical shapes of the lines in the electron paramagnetic resonance (EPR) spectra of cobalt-containing centers with opposite signs in low and high magnetic field parts of spectra are due to very sensitive spin-Hamiltonian parameters of these defects to the lattice distortions. Annealing of cobalt-containing crystals at 2600 K produces the disappearance of all cobalt-containing EPR spectra, probably due to the capture of an additional nitrogen atom and the creation of a 3d6 diamagnetic state. In diamonds grown in the iron system with a high content of nitrogen there is evidence of an influence of ferromagnetic inclusion on the exchange interaction between substitutional nitrogen as an additional channel of indirect exchange interaction.
Starting Page	365
Ending Page	381
Page Count	17
File Format	PDF
ISSN	09379347
Journal	Applied Magnetic Resonance
Volume Number	28
Issue Number	3-4
e-ISSN	16137507
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-01-01
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solid State Physics Spectroscopy/Spectrometry Physical Chemistry Organic Chemistry
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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