The influence of apical oxygen on the increase of Tc in YBa 2Cu3O7-x

E. Dul'kin

doi:10.1088/0953-2048/17/7/022

The influence of apical oxygen on the increase of T_c in YBa ₂Cu₃O_7-x

E. Dul'kin^*

^*Corresponding author for this work

The Institute of Applied Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The direct current (DC) bulk resistance and acoustic emission of YBa ₂Cu₃O_7-x ceramic samples have simultaneously been measured during heating in a temperature region of 400-700 K. Near 560 K, an anomaly of p, accompanied by an acoustic emission, has been observed. After this anomaly p reached a lower value than had previously been measured. The observed p decrease and acoustic emission signals confirm that YBa ₂Cu₃O_7-x ceramic samples absorb oxygen during heating in the temperature region of 500-600 K, as shown by previous dilatometric measurements (Dul'kin 2001 J. Superconductivity 14 497). It is shown that absorbed oxygen atoms enter O4 apical oxygen sites and are able to increase the T_c in YBa₂Cu₃O_7-x material.

Original language	English
Pages (from-to)	954-956
Number of pages	3
Journal	Superconductor Science and Technology
Volume	17
Issue number	7
DOIs	https://doi.org/10.1088/0953-2048/17/7/022
State	Published - Jul 2004

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10.1088/0953-2048/17/7/022

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title = "The influence of apical oxygen on the increase of Tc in YBa 2Cu3O7-x",

abstract = "The direct current (DC) bulk resistance and acoustic emission of YBa 2Cu3O7-x ceramic samples have simultaneously been measured during heating in a temperature region of 400-700 K. Near 560 K, an anomaly of p, accompanied by an acoustic emission, has been observed. After this anomaly p reached a lower value than had previously been measured. The observed p decrease and acoustic emission signals confirm that YBa 2Cu3O7-x ceramic samples absorb oxygen during heating in the temperature region of 500-600 K, as shown by previous dilatometric measurements (Dul'kin 2001 J. Superconductivity 14 497). It is shown that absorbed oxygen atoms enter O4 apical oxygen sites and are able to increase the Tc in YBa2Cu3O7-x material.",

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N2 - The direct current (DC) bulk resistance and acoustic emission of YBa 2Cu3O7-x ceramic samples have simultaneously been measured during heating in a temperature region of 400-700 K. Near 560 K, an anomaly of p, accompanied by an acoustic emission, has been observed. After this anomaly p reached a lower value than had previously been measured. The observed p decrease and acoustic emission signals confirm that YBa 2Cu3O7-x ceramic samples absorb oxygen during heating in the temperature region of 500-600 K, as shown by previous dilatometric measurements (Dul'kin 2001 J. Superconductivity 14 497). It is shown that absorbed oxygen atoms enter O4 apical oxygen sites and are able to increase the Tc in YBa2Cu3O7-x material.

AB - The direct current (DC) bulk resistance and acoustic emission of YBa 2Cu3O7-x ceramic samples have simultaneously been measured during heating in a temperature region of 400-700 K. Near 560 K, an anomaly of p, accompanied by an acoustic emission, has been observed. After this anomaly p reached a lower value than had previously been measured. The observed p decrease and acoustic emission signals confirm that YBa 2Cu3O7-x ceramic samples absorb oxygen during heating in the temperature region of 500-600 K, as shown by previous dilatometric measurements (Dul'kin 2001 J. Superconductivity 14 497). It is shown that absorbed oxygen atoms enter O4 apical oxygen sites and are able to increase the Tc in YBa2Cu3O7-x material.

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JO - Superconductor Science and Technology

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The influence of apical oxygen on the increase of T_c in YBa ₂Cu₃O_7-x

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