The Results of the Recalculation of the Effective X-ray Characteristic Temperature into Its Actual Value
| Authors | D.I. Vadets1 , V.I. Garashchenko1 , O.V. Garashchenko1 , O.Y. Romaniv1 , Y.I. Fedyshyn2 , S.L. Forsyuk1 |
| Affiliations |
1National University of Water and Environmental Engineering, 11, Soborna St., 33000 Rivne, Ukraine 2Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, 50, Pekars'ka St., 79010 Lviv, Ukraine |
| Е-mail | o.v.harashchenko@nuwm.edu.ua |
| Issue | Volume 14, Year 2022, Number 1 |
| Dates | Received 27 August 2021; revised manuscript received 20 February 2022; published online 28 February 2022 |
| Citation | D.I. Vadets, V.I. Garashchenko, O.V. Garashchenko, et al., J. Nano- Electron. Phys. 14 No 1, 01010 (2022) |
| DOI | https://doi.org/10.21272/jnep.14(1).01010 |
| PACS Number(s) | 61.66.Dk, 65.40.De |
| Keywords | X-ray (44) , Characteristic temperature, Anharmonicity, Oscillations (5) , Alloys (16) . |
| Annotation |
The paper discusses the results of the recalculation of the effective X-ray characteristic temperature Θr.ef obtained with corrections for thermal diffuse X-ray scattering, but without corrections for RMS static displacements of atoms in the crystal lattice from their equilibrium position, into an actual value (r.d, taking into account corrections for RMS dynamic and static displacements of atoms. The objects of investigation were disordered continuous solid solutions (alloys) of Cu-Ni, Au-Ag, Fe-Ni, KCl-KBr systems in the temperature range from room temperature to 300-600-700-800 °С. The methodology of finding the RMS general, dynamic and static values of the displacements of atoms from the equilibrium position and the method of recalculating Θr.ef into Θr.d are described. The research results are partly presented graphically and tabularly. Studies have shown that at room temperature the difference between Θr.ef and Θr.d for different alloys ranges from 4 to 28 K. At high temperatures, this difference drops to almost zero. The rate of decrease of Θr.d is greater than Θr.ef, which is caused by taking into account the temperature concentration change of static displacements of atoms. The magnitude of the generalized measure of anharmonicity calculated from the temperature change Θr.d(T) is higher than Θr.ef(T). In addition, the rate of temperature change of the degree of anharmonicity calculated by Θr.d(T) is higher than that calculated by Θr.ef(T) both in magnitude and in the nature of change. |
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