Eff ect of high hydrostatic pressure on various diff usion mechanisms in oxygen defi cient ReBa2Cu3O7–x (Re=Y, Ho) single crystals

doi:10.26565/2222-5617-2018-29-06

Yurii Boyko V.N. Karazin Kharkov National University, Svoboda Sq. 4, Kharkov, Ukraine, 61022 https://orcid.org/0000-0001-9243-724X
Georgiy Khadzhai V.N. Karazin Kharkov National University, Svoboda Sq. 4, Kharkov, Ukraine, 61022
Ruslan Vovk V.N. Karazin Kharkov National University, Svoboda Sq. 4, Kharkov, Ukraine, 61022 https://orcid.org/0000-0002-9008-6252
Ioanis Goulatis

DOI: https://doi.org/10.26565/2222-5617-2018-29-06

Keywords: high hydrostatic pressure

Abstract

In present paper the eff ect of high pressure on the relaxation of the electrical resistivity at room temperature of oxygen nonstoichiometric ReBа2Cu3O7–x (Re = Y, Ho) single crystals are investigated. It is established that the hydrostatic pressure signifi cantly intensifi es the process of diff usion coalescence in the oxygen subsystem. At the same time, the intensity of the redistribution of labile oxygen signifi cantly changes when yttrium is replaced by holmium.

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