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NIST High Temp. Superconducting Materials (HTS) Database:

NIST Standard Reference Database 62

Last Update to Data Content: 1996

DOI: https://doi.org/10.18434/T4KP8J

Bibliographic Information

Title: Normal-State Susceptibility Versus Oxygen Content in the YBa2Cu3Ox and Y2Ba4Cu7Oy Superconducting Phases
Author(s): G. Triscone, J.Y. Genoud, T. Graf, A. Junod, and J. Muller
Publication: Journal of Alloys and Compounds Volume: 195 Issue: Not Available Year: 1993 Page(s): 351-354
Editor(s): Not Available
Publisher: Elsevier Sequoia
Language: English
Notes: Not Available
Keywords: Material Specification, Crystallography, Critical Temperature, Magnetic Susceptibility

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Y:247; [Y-Ba-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Solid State Reaction
Notes: "High quality YBa2Cu3Ox and Y2Ba4Cu7Oy batches were prepared at high temperature, 980-990 °C and 1010-1020 °C, under (0.1 MPa = 1 bar) and (2.0 MPa = 20 bar) oxygen pressure, respectively. The samples contain grains larger than typically 20 µm. A very small amount of CuO and BaCuO2 (123 samples) or Ba2Cu3Ox (247 samples) was detected in optical and SEM investigations (<0.5% by volume)... to change and homogenize the oxygen concentration, each sample was annealed at a different temperature and oxygen pressure ( (0.1 - 107 Pa) = (10-6-100 bar) ). These long final treatments were followed by quenching into liquid gallium. The oxygen concentration was determined by recording the mass change during the reduction of samples in pure hydrogen flow at 900 °C."
Formula: YBa2Cu3Ox
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Y:123; [Y-Ba-Cu-O]
Crystal System: Orthorhombic
Formula Units per Cell:
Space Group:
Cell Parameters
x of Ox (formula units) Temp K a Å b Å c Å
6.24 296 3.8586 3.8586 11.842
6.37 296 3.8447 3.8693 11.763
6.66 296 3.8299 3.8790 11.734
6.67 296 3.8315 3.8778 11.738
6.75 296 3.8238 3.8826 11.719
6.79 296 3.8232 3.8860 11.713
6.83 296 3.8255 3.8824 11.719
6.98 296 3.8175 3.8896 11.682
Measurement Method: X-ray diffraction
The authors cite J.Y. Genoud et al., Physica C, Vol. 192, 137 (1992).

Cautions: Evaluated Data
Critical Temperature for Y:123; [Y-Ba-Cu-O]
x of Ox (formula units) Critical Temperature (K)
6.24 0
6.37 7
6.66 60.0
6.67 61.6
6.75 69.2
6.79 73.7
6.83 80.7
6.98 92.4
Measurement Method: Ac susceptibility
"The a.c. susceptibility was measured in a magnetic field of (8 A/m = 0.1 Oe) rms at a frequency of 73 Hz." No additional measurement details were noted.

Cautions: Evaluated Data
Magnetic Susceptibility for Y:123; [Y-Ba-Cu-O]
x of Ox (formula units) Temperature (K) Magnetic Susceptibility (arbitrary)
6.98 4 -1.00
6.98 33 -1.00
6.98 65 -1.00
6.98 90 -0.97
6.98 92 -0.41
6.98 93 -0.04
6.98 93 0.00
6.98 99 0.00
6.98 100 0.00
6.83 4 -1.00
6.83 23 -1.00
6.83 51 -1.00
6.83 67 -1.00
6.83 75 -0.93
6.83 81 -0.47
6.83 82 -0.11
6.83 84 0.00
6.83 90 0.00
6.83 100 0.00
6.79 4 -1.00
6.79 23 -1.00
6.79 45 -1.00
6.79 62 -1.00
6.79 69 -1.00
6.79 74 -0.62
6.79 74 -0.24
6.79 75 -0.05
6.79 76 0.00
6.79 90 0.00
6.79 100 0.00
6.75 5 -1.00
6.75 27 -1.00
6.75 53 -1.00
6.75 64 -1.00
6.75 69 -0.69
6.75 70 -0.28
6.75 71 -0.07
6.75 73 -0.01
6.75 90 0.00
6.75 100 0.00
6.67 4 -1.00
6.67 23 -1.00
6.67 43 -1.00
6.67 57 -0.97
6.67 61 -0.72
6.67 62 -0.28
6.67 64 -0.09
6.67 69 0.00
6.67 78 0.00
6.67 89 0.00
6.67 99 0.00
6.67 100 0.00
6.66 5 -1.00
6.66 26 -1.00
6.66 51 -1.00
6.66 57 -0.87
6.66 60 -0.47
6.66 64 -0.09
6.66 62 0.00
6.66 75 0.00
6.66 90 0.00
6.66 99 0.00
6.66 100 0.00
6.37 4 -0.22
6.37 6 -0.09
6.37 8 -0.03
6.37 11 0.00
6.37 20 0.00
6.37 30 0.00
Measurement Method: Ac susceptibility
"The a.c. susceptibility was measured in a magnetic field of (8 A/m = 0.1 Oe) rms at a frequency of 73 Hz." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Material Specification for Y:247; [Y-Ba-Cu-O] Process: Solid State Reaction
Notes: "High quality YBa2Cu3Ox and Y2Ba4Cu7Oy batches were prepared at high temperature, 980-990 °C and 1010-1020 °C, under (0.1 MPa = 1 bar) and (2.0 MPa = 20 bar) oxygen pressure, respectively. The samples contain grains larger than typically 20 µm. A very small amount of CuO and BaCuO2 (123 samples) or Ba2Cu3Ox (247 samples) was detected in optical and SEM investigations (<0.5% by volume)... to change and homogenize the oxygen concentration, each sample was annealed at a different temperature and oxygen pressure ( (0.1 - 107 Pa) = (10-6-100 bar) ). These long final treatments were followed by quenching into liquid gallium. The oxygen concentration was determined by recording the mass change during the reduction of samples in pure hydrogen flow at 900 °C."
Formula: Y2Ba4Cu7Ox
Informal Name: Y:247
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Y:247; [Y-Ba-Cu-O]
Crystal System: Orthorhombic
Formula Units per Cell:
Space Group:
Cell Parameters
x of Ox (formula units) Temp K a Å b Å c Å
14.13 296 3.8467 3.8662 50.851
14.35 296 3.8468 3.8678 50.808
14.39 296 3.8450 3.8694 50.785
14.48 296 3.8425 3.8719 50.709
14.71 296 3.8379 3.8762 50.674
14.82 296 3.8366 3.8758 50.631
14.89 296 3.8339 3.8767 50.611
15.09 296 3.8302 3.8753 50.584
Measurement Method: X-ray diffraction
The authors cite J.Y. Genoud et al., Physica C, Vol. 192, 137 (1992).

Cautions: Evaluated Data

Critical Temperature for Y:247; [Y-Ba-Cu-O]
x of Ox (formula units) Critical Temperature (K)
14.13 32.2
14.35 33.7
14.39 39.5
14.48 52.9
14.71 64.6
14.82 68.2
14.89 78.1
15.09 93.1
Measurement Method: Ac susceptibility
"The a.c. susceptibility was measured in a magnetic field of (8 A/m = 0.1 Oe) rms at a frequency of 73 Hz." No additional measurement details were noted.

Cautions: Evaluated Data
Magnetic Susceptibility for Y:247; [Y-Ba-Cu-O]
x of Ox (formula units) Temperature (K) Magnetic Susceptibility (arbitrary)
14.13 5 -1.00
14.13 22 -0.95
14.13 31 -0.66
14.13 34 -0.23
14.13 37 0.00
14.13 59 0.00
14.13 80 0.00
14.13 100 0.00
14.35 5 -1.00
14.35 22 -0.95
14.35 32 -0.67
14.35 36 -0.29
14.35 42 0.00
14.35 59 0.00
14.35 75 0.00
14.35 100 0.00
14.39 21 -1.00
14.39 35 -0.91
14.39 40 -0.51
14.39 42 -0.10
14.39 44 0.00
14.39 60 0.00
14.39 80 0.00
14.39 100 0.00
14.48 21 -1.00
14.48 40 -1.00
14.48 50 -0.97
14.48 53 -0.46
14.48 55 -0.13
14.48 58 0.00
14.48 74 0.00
14.48 100 0.00
14.71 50 -1.00
14.71 61 -0.97
14.71 65 -0.54
14.71 66 -0.20
14.71 68 0.00
14.71 80 0.00
14.71 100 0.00
14.82 57 -1.00
14.82 65 -0.98
14.82 69 -0.52
14.82 70 -0.14
14.82 73 0.00
14.82 84 0.00
14.82 100 0.00
14.89 66 -1.00
14.89 73 -1.00
14.89 79 -0.48
14.89 80 -0.14
14.89 85 0.00
14.89 100 0.00
15.09 74 -1.00
15.09 88 -0.97
15.09 93 -0.57
15.09 94 -0.15
15.09 95 0.00
15.09 100 0.00
Measurement Method: Ac susceptibility
"The a.c. susceptibility was measured in a magnetic field of (8 A/m = 0.1 Oe) rms at a frequency of 73 Hz." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.