Synthesis and superconducting properties of Y(Ba1−yLay)2Cu4O8 and (Y1−xCax)(Ba1−yLay)2Cu4O8
Takeshi Sakurai, Takahiro Wada, Nobuo Suzuki, Shin-ichi Koriyama, Takayuki Miyatake, H. Yamauchi, Naoki Koshizuka, Shoji Tanaka
DOI 10.1103/PhysRevB.42.8030 · Physical Review B
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Abstract
We have synthesized single-phase Y(Ba1−yLay)2Cu4O8 and (Y1−xCax) (Ba0.9La0.1)2Cu4O8 ceramics (0≤x≤0.1, 0≤y≤0.1) by means of high-oxygen-pressure sintering using an O2 hot isostatic press. It was revealed by powder x-ray diffraction that Ca and La were successfully substituted for Y and Ba, respectively. The superconducting properties of the ceramics were characterized by electrical resistivity and magnetic susceptibility. The superconducting critical temperature tended to be enhanced by Ca doping and deteriorated by La doping. This tendency may be explained by the idea of carrier concentration control.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | onset |
| YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 74 | Pressure not reported | zero_resistance |
| YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 78.3 | Pressure not reported | onset |
| Y(Ba0.975La0.025)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75 | Pressure not reported | onset |
| Y(Ba0.975La0.025)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 68 | Pressure not reported | zero_resistance |
| Y(Ba0.975La0.025)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 74.3 | Pressure not reported | onset |
| Y(Ba0.95La0.05)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 71 | Pressure not reported | onset |
| Y(Ba0.95La0.05)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | zero_resistance |
| Y(Ba0.95La0.05)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 67.8 | Pressure not reported | onset |
| Y(Ba0.925La0.075)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 67 | Pressure not reported | onset |
| Y(Ba0.925La0.075)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 54 | Pressure not reported | zero_resistance |
| Y(Ba0.925La0.075)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 63.4 | Pressure not reported | onset |
| Y(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 62 | Pressure not reported | onset |
| Y(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 43 | Pressure not reported | zero_resistance |
| Y(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60.1 | Pressure not reported | onset |
| (Y0.95Ca0.05)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 68 | Pressure not reported | onset |
| (Y0.95Ca0.05)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 46 | Pressure not reported | zero_resistance |
| (Y0.95Ca0.05)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 68.8 | Pressure not reported | onset |
| (Y0.9Ca0.1)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | onset |
| (Y0.9Ca0.1)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | zero_resistance |
| (Y0.9Ca0.1)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 79 | Pressure not reported | onset |
| (Y0.85Ca0.15)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 81 | Pressure not reported | onset |
| (Y0.85Ca0.15)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 70 | Pressure not reported | zero_resistance |
| (Y0.85Ca0.15)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 79.3 | Pressure not reported | onset |
| (Y0.8Ca0.2)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 83 | Pressure not reported | onset |
| (Y0.8Ca0.2)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 74 | Pressure not reported | zero_resistance |
| (Y0.8Ca0.2)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80.7 | Pressure not reported | onset |
| (Y0.75Ca0.25)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 83 | Pressure not reported | onset |
| (Y0.75Ca0.25)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 71 | Pressure not reported | zero_resistance |
| (Y0.75Ca0.25)(Ba0.9La0.1)2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80.4 | Pressure not reported | onset |
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