Local Cu and Br environments and their relationship to superconductivity restoration in brominated YBa2Cu3Oy

D. M. Potrepka; D. B. Fenner; M. Balasubramanian; W. A. Hines; J. I. Budnick

doi:10.1063/1.122108

Local Cu and Br environments and their relationship to superconductivity restoration in brominated YBa₂Cu₃O_y

D. M. Potrepka
, D. B. Fenner
, M. Balasubramanian
, W. A. Hines
, J. I. Budnick

Emerging and Solid-State Batteries

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

5 Scopus citations

Abstract

^63,65Cu nuclear quadrupole resonance (NQR) and Br k-edge x-ray absorption fine structure (XAFS) have been used to study the local structures in well-characterized samples of deoxygenated and brominated YBa₂Cu₃O_y(YBCO). NQR shows that after bromination of YBa₂Cu₃O_6.1 at 260°C, oxygen has repopulated the chain sites. From XAFS, it is concluded that Br does not enter the YBCO lattice, but rather precipitates out as small nanoscale particles of BaBr₂. These results provide clear evidence of the role of Br in reoxygenating the YBCO structure and an explanation for the partial restoration of superconductivity in the YBCO system.

Original language	English
Pages (from-to)	1137-1139
Number of pages	3
Journal	Applied Physics Letters
Volume	73
Issue number	8
DOIs	https://doi.org/10.1063/1.122108
State	Published - 1998

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title = "Local Cu and Br environments and their relationship to superconductivity restoration in brominated YBa2Cu3Oy",

abstract = "63,65Cu nuclear quadrupole resonance (NQR) and Br k-edge x-ray absorption fine structure (XAFS) have been used to study the local structures in well-characterized samples of deoxygenated and brominated YBa2Cu3Oy(YBCO). NQR shows that after bromination of YBa2Cu3O6.1 at 260°C, oxygen has repopulated the chain sites. From XAFS, it is concluded that Br does not enter the YBCO lattice, but rather precipitates out as small nanoscale particles of BaBr2. These results provide clear evidence of the role of Br in reoxygenating the YBCO structure and an explanation for the partial restoration of superconductivity in the YBCO system.",

author = "Potrepka, \{D. M.\} and Fenner, \{D. B.\} and M. Balasubramanian and Hines, \{W. A.\} and Budnick, \{J. I.\}",

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doi = "10.1063/1.122108",

language = "English",

volume = "73",

pages = "1137--1139",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Local Cu and Br environments and their relationship to superconductivity restoration in brominated YBa2Cu3Oy

AU - Potrepka, D. M.

AU - Fenner, D. B.

AU - Balasubramanian, M.

AU - Hines, W. A.

AU - Budnick, J. I.

PY - 1998

Y1 - 1998

N2 - 63,65Cu nuclear quadrupole resonance (NQR) and Br k-edge x-ray absorption fine structure (XAFS) have been used to study the local structures in well-characterized samples of deoxygenated and brominated YBa2Cu3Oy(YBCO). NQR shows that after bromination of YBa2Cu3O6.1 at 260°C, oxygen has repopulated the chain sites. From XAFS, it is concluded that Br does not enter the YBCO lattice, but rather precipitates out as small nanoscale particles of BaBr2. These results provide clear evidence of the role of Br in reoxygenating the YBCO structure and an explanation for the partial restoration of superconductivity in the YBCO system.

AB - 63,65Cu nuclear quadrupole resonance (NQR) and Br k-edge x-ray absorption fine structure (XAFS) have been used to study the local structures in well-characterized samples of deoxygenated and brominated YBa2Cu3Oy(YBCO). NQR shows that after bromination of YBa2Cu3O6.1 at 260°C, oxygen has repopulated the chain sites. From XAFS, it is concluded that Br does not enter the YBCO lattice, but rather precipitates out as small nanoscale particles of BaBr2. These results provide clear evidence of the role of Br in reoxygenating the YBCO structure and an explanation for the partial restoration of superconductivity in the YBCO system.

UR - https://www.scopus.com/pages/publications/0010224031

U2 - 10.1063/1.122108

DO - 10.1063/1.122108

M3 - Article

AN - SCOPUS:0010224031

SN - 0003-6951

VL - 73

SP - 1137

EP - 1139

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

ER -

Local Cu and Br environments and their relationship to superconductivity restoration in brominated YBa₂Cu₃O_y

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