Effects of fluorination on the 90 K superconductor Ba2RCu3O7-δ(R=Y, Eu; 0≤δ≤1)

S. M. Zahurak; D. W. Murphy; S. Nakahara; W. W. Warren; D. M. Krol; A. M. Thayer; D. C. Douglass; G. F. Brennert; S. H. Glarum; E. M. Gyorgy; S. M. Fine; M. Greenblatt

doi:10.1016/0167-2738(89)90403-7

Effects of fluorination on the 90 K superconductor Ba₂RCu₃O_7-δ(R=Y, Eu; 0≤δ≤1)

S. M. Zahurak, D. W. Murphy, S. Nakahara, W. W. Warren, D. M. Krol, A. M. Thayer, D. C. Douglass, G. F. Brennert, S. H. Glarum, E. M. Gyorgy, S. M. Fine, M. Greenblatt

School of Arts and Sciences, Chemistry & Chemical Biology

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

7 Scopus citations

Abstract

Substitution of fluorine for oxygen in samples of the type Ba₂YCu₃O_7-δ(0≤δ≤1) is of interest because oxygen and fluorine have similar ionic radii and a variety of oxyfluorides are known to exist. This work describes fluorination of sintered pellets of Ba₂RCu₃O_7-δ (R=Y, Eu; (0≤δ≤1). Fluorination of Ba₂YCu₃O_6.92 affords a nominal composition of Ba ₂YCu₃O_6.4F_1.3 and T_c(onset)=92 K. Fluorination of Ba₂YCu₃O_6.15 gives a nominal composition of Ba₂YCu₃O_4.7F_3.0, which is not supercon ducting to 4.2 K. Fluorinated pellets appear to be single-phase as determined by X-ray powder diffraction. However, Raman, NQR, ESR, X-ray diffraction, and TEM data suggest that fluorine is not incorporated into the superconducting phase, but rather is incorporated into a secondary amorphous phase.

Original language	English (US)
Pages (from-to)	1104-1108
Number of pages	5
Journal	Solid State Ionics
Volume	32-33
Issue number	PART 2
DOIs	https://doi.org/10.1016/0167-2738(89)90403-7
State	Published - 1989

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/0167-2738(89)90403-7

Cite this

@article{83f2924d4fab4f109a4363ae404057f0,

title = "Effects of fluorination on the 90 K superconductor Ba2RCu3O7-δ(R=Y, Eu; 0≤δ≤1)",

abstract = "Substitution of fluorine for oxygen in samples of the type Ba2YCu3O7-δ(0≤δ≤1) is of interest because oxygen and fluorine have similar ionic radii and a variety of oxyfluorides are known to exist. This work describes fluorination of sintered pellets of Ba2RCu3O7-δ (R=Y, Eu; (0≤δ≤1). Fluorination of Ba2YCu3O6.92 affords a nominal composition of Ba 2YCu3O6.4F1.3 and Tc(onset)=92 K. Fluorination of Ba2YCu3O6.15 gives a nominal composition of Ba2YCu3O4.7F3.0, which is not supercon ducting to 4.2 K. Fluorinated pellets appear to be single-phase as determined by X-ray powder diffraction. However, Raman, NQR, ESR, X-ray diffraction, and TEM data suggest that fluorine is not incorporated into the superconducting phase, but rather is incorporated into a secondary amorphous phase.",

author = "Zahurak, {S. M.} and Murphy, {D. W.} and S. Nakahara and Warren, {W. W.} and Krol, {D. M.} and Thayer, {A. M.} and Douglass, {D. C.} and Brennert, {G. F.} and Glarum, {S. H.} and Gyorgy, {E. M.} and Fine, {S. M.} and M. Greenblatt",

note = "Funding Information: The authors wish to acknowledge J.V. Waszczak for helpful discussions and magnetic measurements. The work done at Rutgers, the State University of New Jersey, was supported by a National Science Foundation - Solid State Chemistry Grant No. DMR84-04003.",

year = "1989",

doi = "10.1016/0167-2738(89)90403-7",

language = "English (US)",

volume = "32-33",

pages = "1104--1108",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

number = "PART 2",

}

TY - JOUR

T1 - Effects of fluorination on the 90 K superconductor Ba2RCu3O7-δ(R=Y, Eu; 0≤δ≤1)

AU - Zahurak, S. M.

AU - Murphy, D. W.

AU - Nakahara, S.

AU - Warren, W. W.

AU - Krol, D. M.

AU - Thayer, A. M.

AU - Douglass, D. C.

AU - Brennert, G. F.

AU - Glarum, S. H.

AU - Gyorgy, E. M.

AU - Fine, S. M.

AU - Greenblatt, M.

N1 - Funding Information: The authors wish to acknowledge J.V. Waszczak for helpful discussions and magnetic measurements. The work done at Rutgers, the State University of New Jersey, was supported by a National Science Foundation - Solid State Chemistry Grant No. DMR84-04003.

PY - 1989

Y1 - 1989

N2 - Substitution of fluorine for oxygen in samples of the type Ba2YCu3O7-δ(0≤δ≤1) is of interest because oxygen and fluorine have similar ionic radii and a variety of oxyfluorides are known to exist. This work describes fluorination of sintered pellets of Ba2RCu3O7-δ (R=Y, Eu; (0≤δ≤1). Fluorination of Ba2YCu3O6.92 affords a nominal composition of Ba 2YCu3O6.4F1.3 and Tc(onset)=92 K. Fluorination of Ba2YCu3O6.15 gives a nominal composition of Ba2YCu3O4.7F3.0, which is not supercon ducting to 4.2 K. Fluorinated pellets appear to be single-phase as determined by X-ray powder diffraction. However, Raman, NQR, ESR, X-ray diffraction, and TEM data suggest that fluorine is not incorporated into the superconducting phase, but rather is incorporated into a secondary amorphous phase.

AB - Substitution of fluorine for oxygen in samples of the type Ba2YCu3O7-δ(0≤δ≤1) is of interest because oxygen and fluorine have similar ionic radii and a variety of oxyfluorides are known to exist. This work describes fluorination of sintered pellets of Ba2RCu3O7-δ (R=Y, Eu; (0≤δ≤1). Fluorination of Ba2YCu3O6.92 affords a nominal composition of Ba 2YCu3O6.4F1.3 and Tc(onset)=92 K. Fluorination of Ba2YCu3O6.15 gives a nominal composition of Ba2YCu3O4.7F3.0, which is not supercon ducting to 4.2 K. Fluorinated pellets appear to be single-phase as determined by X-ray powder diffraction. However, Raman, NQR, ESR, X-ray diffraction, and TEM data suggest that fluorine is not incorporated into the superconducting phase, but rather is incorporated into a secondary amorphous phase.

UR - http://www.scopus.com/inward/record.url?scp=0024613275&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024613275&partnerID=8YFLogxK

U2 - 10.1016/0167-2738(89)90403-7

DO - 10.1016/0167-2738(89)90403-7

M3 - Article

AN - SCOPUS:0024613275

SN - 0167-2738

VL - 32-33

SP - 1104

EP - 1108

JO - Solid State Ionics

JF - Solid State Ionics

IS - PART 2

ER -

Effects of fluorination on the 90 K superconductor Ba₂RCu₃O_7-δ(R=Y, Eu; 0≤δ≤1)

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this