LATTICE DYNAMICALSTUDY OF EUROPIUM SULFIDE (EUS) USING TRI & TRSMODEL
Journal: International Journal of Advanced Research (Vol.9, No. 01)Publication Date: 2021-01-20
Authors : Shyamendra Pratap Singh U.C Srivastava; K.S Upadhyaya;
Page : 472-478
Keywords : Lattice Properties Debye Temperature Combined Density of States Phonon Dispersion Relation and Elastic Properties;
- A COMPARATIVE STUDY OF TERRESTRIAL GAMMA DOSE RATE IN AIR MEASURED BY DIFFERENT PORTABLE SURVEY METERS AROUND THE PETROLEUM-PRODUCING AREAS OF THE-QAR PROVINCE, IRAQ
- GAMMA DOSE RATE ANALYSIS IN BIOLOGICAL SHIELDING OF HTGR-10 MWth PEBBLE-BED REACTOR
- Broad Energy HPGe Gamma Spectrometry for Dose Rate Estimation for Trapped Charge Dating
- Preliminary Results Measuring the Gamma Dose Rate Distribution in North Eastern Burkina Faso where the Concentration of Uranium in the Soil is Elevated
- INDOOR RADON LEVELS AND THE ASSOCIATED EFFECTIVE DOSE RATE DETERMINATION AT THE SHATT-ALARAB DISTRACT IN THE BASRAH GOVERNORATE, IRAQ
Abstract
In the present communication authors are reportinglattice dynamical study of Europiumsulfide (EuS).Which is based on the two phenomenological models, by including the effect of three-body interactions(TBI) in the frame work of rigid ion model(TRIM) & rigid shell model (TRSM) with the satisfactory description of all phonon properties.The model parameters of both have used to the phonon spectra for the allowed 48-nonequivalent wave vectors in the first Brillouin zone.The frequencies along the symmetry directions have plotted against the wavevector to obtain the phonon dispersion curves(PDC)from both the models. With the help of available experimentaldata.We have also reportedthe Specific heat variation& Combined density of states (CDS) for complete description of the frequencies for the Brillouin zone included theoretical Debye temperature and elastic property of (second-third order) of EuS. So by using the present model the complete lattice property of EuS is reported successfully.
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