Dipole-dipole and exchange interactions of nitrogen centers in synthetic diamonds

Shul'man, L. A.; Podzyarei, G. A.

doi:10.1007/bf00524048

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1981

1985

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Cited by 2 publications

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“…The deviation from thermally activated behavior becomes even more apparent when the present results are combined with those of pre- s" 1 , V(0) = 0.7 eV. 12 Reorientation frequencies reported for these dynamical experiments at high temperature are shown in Fig. 2.…”

mentioning

confidence: 71%

Reorientation of Nitrogen in Type-IbDiamond by Thermal Excitation and Tunneling

Ammerlaan

Burgemeister²

1981

Phys. Rev. Lett.

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mentioning

confidence: 71%

Reorientation of Nitrogen in Type-IbDiamond by Thermal Excitation and Tunneling

Ammerlaan

Burgemeister²

1981

Phys. Rev. Lett.

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“…The averaging of the hyperfine structure due to the unpaired electron jumping between the four equivalent C-N bonds has been observed in the ESR spectrum of the isolated substitutional nitrogen centre, P1 [1,2].…”

Section: Introductionmentioning

confidence: 97%

A Dynamic Jahn-Teller Effect in the ESR Spectrum of the N1 Centre in Diamond

Loubser

Wyk

1985

MRS Proc.

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The NI centre in Type Ia diamonds is a di-nitrogen centre with S = One nitrogen's interaction with the unpaired electron at room temperature gives a large splitting, All = 46.4 G, Al = 32.2 G with <111> symmetry while the hyperfine splitting due to the other one has <110> symmetry with parameters All = 2.95 ± .03 G, A, = 2.81 ± .03 G. As the temperature is increased averaging effects start; fiFst some hyperfine lines broaden at about 1500C and disappear at 200'C. At still higher temperatures new lines appear and at about 8501C the averaging process is completed. The interpretation of the dynamics leads to a model of a non-planar N-C-C-N configuration with the electron jumping between the two N-C bonds. The measured activation energy is 0.4 eV which is about midway between the measured values for a similar effect in the isolated nitrogen centre, P1, (E = 0.7eV) and the N-C-N, W7, centre (E = 0.24 eV).

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Dipole-dipole and exchange interactions of nitrogen centers in synthetic diamonds

Cited by 2 publications

References 4 publications

Reorientation of Nitrogen in Type-IbDiamond by Thermal Excitation and Tunneling

Reorientation of Nitrogen in Type-IbDiamond by Thermal Excitation and Tunneling

A Dynamic Jahn-Teller Effect in the ESR Spectrum of the N1 Centre in Diamond

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