Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Mao-Lu Du"'
Publikováno v:
In Physica B: Physics of Condensed Matter 15 April 2013 415:5-9
Autor:
Mao Lu Du, Tae Ho Yeom
Publikováno v:
Journal of the Korean Physical Society. 74:245-250
The electron paramagnetic resonance of the Cr3+ ion in an alexandrite single crystal was explored. The angular dependence of the resonance fields observed using an X-band spectrometer in the crystallographic planes were analyzed using the monoclinic
Autor:
Dong-yang Li, Mao-Lu Du
Publikováno v:
Physica B: Condensed Matter. 456:134-141
For d 3 ions in covalent compounds with tetragonal symmetry, this paper presents a complete energy matrix, in which the different covalence of t 2 and e orbitals is considered not only in the electrostatic repulsions part of energy matrix elements bu
Autor:
Dong-yang Li, Mao-Lu Du
Publikováno v:
Physica B: Condensed Matter. 432:26-32
In contrast to the traditional method which is unsuitable for the prediction of optical for the transition metal ion in covalence and low-symmetry crystal, this paper reports a new method to investigate the optical properties of d 2 ions in covalent
Publikováno v:
Physica B: Condensed Matter. 398:46-50
In this paper, formulas for the optical spectrum and the gyromagnetic factor for d 7 ions in T d symmetry with a slight triangle perturbation are established by using a covalent model, in which the covalence contribution has been considered. Using th
Publikováno v:
Zeitschrift für Naturforschung A. 61:357-363
In the investigation of the optical and magnetic properties of 3dN ion impurities in semiconductors, the contribution of the covalence must be considered. A modified d function (d∗) and two covalent factors associated with the t2 and e orbitals hav
Autor:
Jia‐Jun Chen, Mao‐Lu Du
Publikováno v:
physica status solidi (b). 241:2994-2999
In this paper, formulas for the optical spectrum and the EPR parameters calculated for d2 ions in Td symmetry are established by using a covalent model, in which the covalence contribution has been considered. Using the model, we have calculated the
Autor:
Jia-Jun Chen, Mao-Lu Du
Publikováno v:
Physica B: Condensed Matter. 305:264-269
A covalence crystal field model based on a cluster approach is presented. It enables the calculation of optical spectra and the ground state g -factor for a 3d 7 ion in the T d system. In this model, not only the effect of the difference between the
Publikováno v:
Physica B: Condensed Matter. 405:3808-3810
Based on the crystal-field theory, the relationships between the EPR parameters D , g and a +(2/3) F and the local structure of Mn 2+ ions in CdGeAs 2 crystal are discussed. The theoretically calculated values of D , g and a +(2/3) F indicate that th
Autor:
Zhao-Min Li, Mao-Lu Du
Publikováno v:
Physica B: Condensed Matter. 233:89-92
In this paper the perturbation expressions of the g z and g x factors of the 3d 9 ions with 2 A 1g ground state in a tetragonal crystal field are obtained by a molecular orbital approach. Using these formulae the g z and g x factors of the NH 4 X : C