Lebedev, V.T.; Shakhov, F.M.; Vul, A.Y.; Zakharov, A.A.; Zinoviev, V.G.; Orlova, V.A.; Fomin, E.V. X-ray Excited Optical Luminescence of Eu in Diamond Crystals Synthesized at High Pressure High Temperature. Materials2023, 16, 830.
Lebedev, V.T.; Shakhov, F.M.; Vul, A.Y.; Zakharov, A.A.; Zinoviev, V.G.; Orlova, V.A.; Fomin, E.V. X-ray Excited Optical Luminescence of Eu in Diamond Crystals Synthesized at High Pressure High Temperature. Materials 2023, 16, 830.
Lebedev, V.T.; Shakhov, F.M.; Vul, A.Y.; Zakharov, A.A.; Zinoviev, V.G.; Orlova, V.A.; Fomin, E.V. X-ray Excited Optical Luminescence of Eu in Diamond Crystals Synthesized at High Pressure High Temperature. Materials2023, 16, 830.
Lebedev, V.T.; Shakhov, F.M.; Vul, A.Y.; Zakharov, A.A.; Zinoviev, V.G.; Orlova, V.A.; Fomin, E.V. X-ray Excited Optical Luminescence of Eu in Diamond Crystals Synthesized at High Pressure High Temperature. Materials 2023, 16, 830.
Abstract
Diamond powders with inclusions of europium atoms were synthesized at high pressure (7.7 GPa) and temperature (1800oC) from a mixture of pentaerythritol, C(CH2OH)4, and pyrolyzate of diphthalocyanine (C64H32N16Eu) served as a special precursor. In prepared diamonds by X-ray fluorescence spectroscopy, we have found the concentration of Eu atoms of 51±5 ppm that is by two orders of magnitude greater than that in known natural and synthetic diamonds. X-ray diffraction, SEM, X-ray exited optical luminescence, Raman and IR spectroscopy have confirmed the formation of diamond monocrystals of high quality with em-bedded Eu atoms and a nitrogen content of ~500 ppm. Numerical simulation has allowed us de-termine the energy cost of 5.8 eV needed for the incorporation of a single Eu atom with adjacent vacancy into growing diamond crystal (528 carbons).
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