Abstract
Slowly cooled samples of the tetragonal superconductor LaBa1.5Ca0.5Cu3Oz show a "double plateau" in plots of Tc against z, whereas quenched samples show a linear variation. No evidence for superstructure formation is observed by electron diffraction. Unit-cell parameters a and c vary linearly with x for slowly cooled samples, but non-linearly for quenched samples. For a given z, the difference in Tc of quenched and slow-cooled samples may indicate a net transfer of charge between the Cu(2)-oxygen planes and the Cu(1)-oxygen chains which is dependent on the thermal history of the samples rather than on ordering of oxygen vacancies.
| Original language | English |
|---|---|
| Pages (from-to) | 137-142 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 260 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 Apr 1996 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Double plateau Tc behaviour in the tetragonal LaBa1.5Ca0.5Cu3Oz superconductor. / Skakle, J. M.S.; Templeton, A.; Lachowski, E. E.; West, A. R.
In: Physica C: Superconductivity and its Applications, Vol. 260, No. 1-2, 01.04.1996, p. 137-142.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Double plateau Tc behaviour in the tetragonal LaBa1.5Ca0.5Cu3Oz superconductor
AU - Skakle, J. M.S.
AU - Templeton, A.
AU - Lachowski, E. E.
AU - West, A. R.
N1 - We thank Engineering and Physical Sciences Research Council (EPSRC) for funding.
PY - 1996/4/1
Y1 - 1996/4/1
N2 - Slowly cooled samples of the tetragonal superconductor LaBa1.5Ca0.5Cu3Oz show a "double plateau" in plots of Tc against z, whereas quenched samples show a linear variation. No evidence for superstructure formation is observed by electron diffraction. Unit-cell parameters a and c vary linearly with x for slowly cooled samples, but non-linearly for quenched samples. For a given z, the difference in Tc of quenched and slow-cooled samples may indicate a net transfer of charge between the Cu(2)-oxygen planes and the Cu(1)-oxygen chains which is dependent on the thermal history of the samples rather than on ordering of oxygen vacancies.
AB - Slowly cooled samples of the tetragonal superconductor LaBa1.5Ca0.5Cu3Oz show a "double plateau" in plots of Tc against z, whereas quenched samples show a linear variation. No evidence for superstructure formation is observed by electron diffraction. Unit-cell parameters a and c vary linearly with x for slowly cooled samples, but non-linearly for quenched samples. For a given z, the difference in Tc of quenched and slow-cooled samples may indicate a net transfer of charge between the Cu(2)-oxygen planes and the Cu(1)-oxygen chains which is dependent on the thermal history of the samples rather than on ordering of oxygen vacancies.
UR - http://www.scopus.com/inward/record.url?scp=0030129173&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(96)00127-X
DO - 10.1016/0921-4534(96)00127-X
M3 - Article
VL - 260
SP - 137
EP - 142
JO - Physica. C, Superconductivity
JF - Physica. C, Superconductivity
SN - 0921-4534
IS - 1-2
ER -