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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: The Magnetic Field at the Surface of High-Tc Superconducting Oxides by Nuclear Magnetic Resonance Critical Current Density and Magnetic Penetration Depth
Author(s): Y. Maniwa, T. Mituhashi, K. Mizoguchi, and K. Kume
Publication: Physica C Volume: 175 Issue: Not Available Year: 1991 Page(s): 401-406
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Current Density, Penetration Depth

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Sintering
Notes: "... sintered YBCO... was used as a sample." No additional processing details were noted.
Formula: YBa2Cu3O7-x
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Critical Current Density for Y:123; [Y-Ba-Cu-O]
Temperature (K) Critical Current Density (kA/cm2)
4 1031
9 914
19 618
28 374
39 227
48 164
63 112
Measurement Method: Pulsed NMR
"The sintered YBCO together with the silicone oil was ground into powder. An average thickness of the silicone oil coated on the surface was estimated to be about 100 Σ from the calculated surface area of the powdered sample using a spherical shape with a typical diameter of 2 µm as observed by an optical microscope....A pulsed NMR apparatus was used to observe proton resonance in the silicone oil on the surface at (732 kA/m = 9.2 kOe)... we assumed that (1) Jc = ΔH/d, where ΔH is the linewidth due to flux pinning and d is the sample dimension = 10-4 cm, (2) ΔH2 is the difference of the second moment in the field sweep NMR from that in the constant field NMR."

Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Penetration Depth for Y:123; [Y-Ba-Cu-O]
Temperature (K) Penetration Depth (Σ)
5 1820
12 1880
14 1810
22 1940
24 1870
34 1930
36 1930
40 1990
42 1920
44 1990
52 2050
54 2040
55 2040
60 2100
64 2170
72 2490
78 3000
82 3590
83 4170
86 4690
87 6050
88 6700
Measurement Method: Pulsed NMR
"The sintered YBCO together with the silicone oil was ground into powder. An average thickness of the silicone oil coated on the surface was estimated to be about 100 Σ from the calculated surface area of the powdered sample using a spherical shape with a typical diameter of 2 µm as observed by an optical microscope....A pulsed NMR apparatus was used to observe proton resonance in the silicone oil on the surface at (732 kA/m = 9.2 kOe)... we assumed that (1) Jc = ΔH/d, where ΔH is the linewidth due to flux pinning and d is the sample dimension = 10-4 cm, (2) ΔH2 is the difference of the second moment in the field sweep NMR from that in the constant field NMR."

Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.