The anisotropy of acoustic attenuation at a frequency of 30 MHz and the temperature dependenceof the effective elastic constants in pure and neodymium-doped yttrium aluminum garnetcrystals in the temperature range of 290−450 K have been studied. The real and imaginarycomponents of the elasticity tensor in these crystals were determined. Based on them, a sectionof the characteristic surface of the attenuation coefficient by the (001) plane was constructed.The special directions of propagation of acoustic waves in the (100) plane have been found.
| Mualliflar | Ахмеджанов, Ф.Р., Тошпулатов, И.Ш. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2025-10-31 |
| Jild | 27 |
| Son | 3 |
| Til | Rus |
| DOI | 10.52304/.v27i3.599 |
DOI: 10.52304/.v27i3.599 · Maqolaning asl sahifasi
кристаллы иттрий алюминиевого граната, анизотропия, эффективные упругие константы, затухание акустических волн, температурная зависимость, yttrium aluminum garnet crystals, anisotropy, effective elastic constants, attenuation of acoustic waves, temperature dependence
The work is devoted to the development of techniques for determining the radiochemical purity(the content of the connected target radionuclide) and chemical purity (the content of nonradioactiveimpurity elements Cu, Fe…
In this work, the vibrational spectra and nonlinear optical (NLO) properties of paracetamolwere analyzed using experimental and computational methods. The experimental FTIR andRaman spectra of paracetamol were compared…
Non-adiabatic effects that manifest in the electrical properties of the positive parity states of182,184W nuclei are studied in the framework of a phenomenological model that takes into accountthe Coriolis mixing of…
The frequency shift Δν of the Mandelstam-Brillouin doublet in the spectrum of Rayleigh scatteringof light in aqueous solutions of 4-methylpyridine was studied experimentally. It wasfound that the experimentally observed…
This paper presents the results of a study on modeling and predicting the critical superconductingtemperature (Tc) of YBa2Cu3O7δ (YBCO) samples synthesized via the solid-state reactionmethod, using a multiparameter…
This paper presents experimental results of studying the structural and electrophysical propertiesof n-GaAs−p-(ZnSe)1-x-y(Ge2)x(GaAs1-δBiδ)y heterostructure with different nanoinclusionsobtained by liquid-phase epitaxy…
A simulation study of a solar-transversely pumped Cr:Nd:YAG laser with Monte Carlo photontracing technique was conducted. The model was used to calculate the pump efficiency, pumpand temperature distributions, and…
Thermally stable low-resistance ohmic contacts are required for the creation of high-speedGaAs integrated circuits. In this work, annealing of MoGeW contact structures in an InAs atmosphereare studied. High thermal…
In this paper, a new method for determining the density of defect states of amorphous semiconductorsis proposed. It is shown that if the experimental curve of the optical absorptionspectrum of an amorphous semiconductor…
The effects of thermal and laser annealing on the structure and composition of Na+-implantedGe(111) were investigated using Auger electron spectroscopy and secondary ion mass spectrometry.Ion implantation was performed…