The scientific activities of the Crystal Physics Laboratory

by usto

RESEARCH OF THE CRYSTAL PHYSICS LABORATORY

Employees of the Laboratory of Crystal Physics conduct research on current areas of crystal physics and chemistry, which is directly related to the search and creation of new functional single crystals by various methods, as well as to the study of the composition and structure of the crystal lattice, as well as their physicochemical properties. The development of new technologies for growing such crystals with desired properties meets the requirements of today. They are widely in demand and can be reliably used in such areas of the national economy as communications, medicine, microelectronics, quantum electronics, computer and robotics. Therefore, in the laboratory of crystal physics, methods have been developed for growing single crystals by various methods – these are the methods of Czochralsky, Bagdasarov, hydrothermal and the method of growing with laser heating from the melt.
For the first time, the technology for producing large crystals with homogeneous optical properties based on double tungstate and cesium-lithium molybdate was developed by the Czochralski method from melt under normal conditions in a crystal physics laboratory. These new single crystals have a wide range of useful physical properties and are used in the development of high-tech equipment, such as lasers and detectors of various types of light, which have found application in microelectronics.
In addition, the laboratory was tasked with developing nanotechnologies and nanomaterials that contributed to the creation of high purity nanoparticles with a nanoparticle size of 20-28 nm, using SiC as an example.
New crystals based on rare-earth oxides with bismuth oxide and antimony oxide have been obtained: Pr3Bi5O12, Y3Bi5O12, Er3Bi5O12, Yb3Bi5O12, Lu3Bi5O12, Y3Sb5O12, Pr3Sb5O12, LiO3ObO1, Y3 crystalline, Yb3ObO3, Yb5Ob, Yb3ObO3, Y3 WO4) 2, LiBi (MoO4) 2.
For the first time, methods have been developed for growing large and optically homogeneous single crystals of double molybdates and tungstates of alkaline elements and bismuth from a melt by the Czochralski method, which have piezoelectric, acoustic, and laser properties that open up the possibility of their use as Cherenkov detectors for detecting radiation and high-energy particles.
Since the Republic of Tajikistan is rich in minerals containing rare minerals and precious stones, the development of technology for producing artificial crystals and extracting precious and semiprecious stones from industrial waste from them occupies a special place in the research of the crystal physics laboratory. So, on the basis of the waste from the Kuhi-Lail deposit, ruby and spinel crystals are artificially grown.