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Institute of Applied Physics
5 Academiei str.
Chisinau, MD-2028
MOLDOVA (Rep. of)
phone: +(373) 22 738150
fax: +(373) 22 738149
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Project ANCD 21.70105.15SD Niobium arsenide - single crystals growth and their characterization

Type : Project within the offer of ANCD RM solutions regarding the promotion of the concept of Open Science and the development of digital technologies in the fields of research and innovation
Head : Ernest Arushanov, acad.
Duration : 2021 - 2022
Division(s) : Laboratory of Materials for Photovoltaics and Photonics
The aim of the projectwas to obtain high quality NbAs single crystals and detailed analysis of their characteristic magneto-optical effects through scientific collaboration, as well as correlating these processes with the development of a desktop application connected to a common database that would store, organize, manipulate and disseminate. research results between local team members and those at a distance. Thus, the research process of Weyl semimetals in collaboration with colleagues from scientific centers in France was facilitated by real-time access to research results and the possibility of storing and organizing data. This facility will be able to be extended and generalized later in order to be able to be used on an even larger scale for the scientific process.
In order to achieve the goal, the following objectives were established:

1. Adaptation of the laboratory technique for the growth works of NbAs single crystals by the method of chemical transport reactions.
2. Development of the desktop application that allows the storage, manipulation of data and real-time access to the available information on the enlarged samples and the conclusions of the experimental analysis of their physico-chemical properties.
3. Synthesis from the initial elements Nb and As of the powder necessary for the growth of NbAs single crystals and their actual growth by the method of chemical transport reactions.
4. Quality control of samples obtained from NbAs using roentgen-structural, roengeno-phase and fluorescence analysis.
5. Determination with the help of roentgen-structural analysis of the natural crystallographic planes of the monocrystals obtained by NbAs.
6. Connect the application to the database and enter the research data into it through the desktop application.
7. Analysis of the optical properties of the single crystals selected by NbAs and appreciation of the potential use in the new generation electronic devices of this material.

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