Publication: The spin hamiltonian parameters calculation of<sup>14</sup>n and<sup>15</sup>n in natural type i diamond
Issued Date
2008-01-01
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2-s2.0-84969677832
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Mahidol University
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SCOPUS
Bibliographic Citation
Condensed Matter Theories. Vol.23, (2008), 452-460
Suggested Citation
Chittra Kedkaew, Pichet Limsuwan, Kanphot Thongcham, Siwaporn Meejoo The spin hamiltonian parameters calculation of<sup>14</sup>n and<sup>15</sup>n in natural type i diamond. Condensed Matter Theories. Vol.23, (2008), 452-460. doi:10.1142/9789812836625_0046 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/19102
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The spin hamiltonian parameters calculation of<sup>14</sup>n and<sup>15</sup>n in natural type i diamond
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Abstract
© 2009 by World Scientific Publishing Co. Pte. Ltd. All rights reserved. The main purpose of this work is to present the ESR spectra and calculate the spin Hamiltonian parameters of 14N and 15N impurities in natural diamond. The ESR spectra of diamond crystal were measured on ESR spectrometer operating at X-band microwave frequency. The results of ESR spectra show that the diamond has a P1 center.This center gives rise to three strong resonance absorption peaks at Θ= 90, Φ= O°due to hyperne interaction between electron spin and nuclear spin of 14N. The ESR spectra of 15N impurity consist of two satellites at the same rotation angle. The eαects of isolated substitution nitrogen on carbon atom produced a symmetric distortion from Td to C3V symmetry. According to this symmetry, the resonance magnetic Field positions of ESR spectra for the rotation angles of 0°, 90°and 180°are almost overlap. The g-factor values and spin Hamiltonian parameters of 14N and 15N are: g = 2:0019, A⊥= 29:73, A‖= 40:24 and g = 2:0019, A⊥= -39:90, A‖= -57:05, respectively.