THE FEATURES OF STRUCTURE PARAMETERS CHANGES Ag3AsS3 SEMICONDUCTOR


ABSTRACT

Gololobov Yu.P., Borovoy N.A., Nikolaienko A.V. The features of structure parameters changes Ag3AsS3 semiconductor. Visnyk National Transport University. Series «Technical sciences». Scientific and Technical Collection. - Kyiv: National Transport University, 2020. - Issue 1 (46).

Influence of temperature and optical irradiation is investigated on the parameters of elementary cell and linear coefficients of thermal expansion of Ag3AsS3 proustite crystals.

Object of the study - single-crystals of compounds - semiconductor Ag3AsS3.

Purpose of the study - to determine an elementary cell parameters change features of Ag3AsS3crystals in the interval of temperatures of T= 120-300 К with presence of optical irradiation.

Method of the study - X-rays metod.

Temperature dependences of the elementary cell parameters and also linear coefficients of thermal expansion of crystals of proustite Ag3AsS3 are investigated in the temperature range of T=120 - 300 K both in the darken mode and with an intensive laser irradiation. It is discovered, that there is a change of the parameter Ac «0,003A as a height at cooling and reduction at heating at the temperature of T «150 K on condition of laser irradiation. The jump of values of parameter of elementary cell represents the change of character of processes of deserializing of cations of Ag+ in transition from the darken mode to the intensive laser irradiation, because the size of silver ions transition potential barrier between octahedral cavities change as a jump.

KEY WORDS: CRYSTALLINE STRUCTURE, PHASE TRANSITION, PARAMETERS OF ELEMENTARY CELL, PROUSTITE.

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AUTHOR

Borovoy Mikola O., doctor of sciences, professor, Kyiv Taras Shevchenko National University, head department of general physics, e-mail: borovoy@univ.kiev.ua, tel. +380445262288, Ukraine, 03680, Kyiv, Acad. Glushkova Prosp.2, build. 1, of. 225, orcid.org/0000-0002-2435-2620.

Gololobov Yurii P., doctor of sciences, professor, National Transport University, professor of department, Kyiv, e-mail: «Yuriy Gololobov» <gololo@ukr.net>, tel. +380442846709, Ukraine, 01103, Kyiv, M. Boychuk str., 42, of. 406, orcid.org/0000-0003-3360-6669.

Nikolaienko Alina V., Ph. D., Taras Shevchenko Kyiv National University, researcher, department of general physics, e-mail: alina.salnik@gmail.com, tel. +380969512897, Ukraine, 03680, Kyiv, Acad. Glushkova Prosp.2, build. 1, of. 225, orcid.org/0000-0002-8744-8232.

REVIEWER

Gulyayev V.I., Engineering (Dr.), professor, National Transport University, head department of mathematics, Kyiv, Ukraine.

Ilin Р.Р., Ph. D., associate professor, National University of Life and Environmental Sciences of Ukraine, associate professor department of physics, Kyiv, Ukraine.

Article language: Ukrainian

Open Access: http://publications.ntu.edu.ua/visnyk/46/073.pdf

Print date: 15.04.2020

Online publication date: 27.10.2020


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