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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: Study of the Magnetic Properties of Single-Crystal Ba<0.6> K<0.4> BiO3
Author(s): Z.J. Huang, H.H. Fang, Y.Y. Xue, P.H. Hor, C.W. Chu, M.L. Norton, and H.Y. Tang
Publication: Physica C Volume: 180 Issue: Not Available Year: 1991 Page(s): 331-336
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Temperature, Critical Current Density, Critical Flux Density Hc2, Penetration Depth, Coherence Length, Irreversibility Field, Critical Field Strength Hc1

Materials and Properties

Ba:11; [Ba(K)-Bi-O]
Material Specification for Ba:11; [Ba(K)-Bi-O] Process: Electrochemical deposition
Notes: "The... single crystal was prepared by using the low-temperature, isothermal, isopotential, electrochemical deposition technique."
Formula: Ba<0.6> K<0.4> BiO3
Informal Name: Ba:11
Chemical Family: Ba(K)-Bi-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Critical Temperature for Ba:11; [Ba(K)-Bi-O]
Critical Temperature (K)
32
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions: Evaluated Data
Critical Current Density for Ba:11; [Ba(K)-Bi-O]
Magnetic Field (T) Temperature (K) Critical Current Density (kA/cm2)
0.1 31 0.002
0.1 31 0.018
0.1 30 0.115
0.1 28 0.513
0.1 24 3.252
0.1 18 15.815
0.1 10 9.605
0.5 30 0.003
0.5 30 0.011
0.5 29 0.225
0.5 27 0.188
0.5 24 1.037
0.5 15 8.535
0.5 10 18.289
2.0 28 0.003
2.0 27 0.037
2.0 25 0.402
2.0 23 1.213
2.0 17 5.124
2.0 11 11.951
5.0 25 0.018
5.0 25 0.055
5.0 24 0.182
5.0 21 0.774
5.0 14 4.642
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions: Evaluated Data
Digitized data were obtained from Figure 8 of the paper.
Critical Flux Density Hc2 for Ba:11; [Ba(K)-Bi-O]
Temperature (K) Crit.Mag.Flux Density Hc2 (T)
19 5.0
23 3.0
26 2.0
28 1.0
29 0.5
31 0.0
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions: Evaluated Data
Digitized data were obtained from Figure 5a of the paper.
Penetration Depth for Ba:11; [Ba(K)-Bi-O]
Penetration Depth (σ)
2500
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions:
Coherence Length for Ba:11; [Ba(K)-Bi-O]
Coherence Length (σ)
51
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions: Evaluated Data
Irreversibility Field for Ba:11; [Ba(K)-Bi-O]
Temperature (K) Irreversibility Field (T)
23 5.0
26 3.0
28 2.0
30 1.0
31 0.1
32 0.0
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions: Evaluated Data
Digitized data were obtained from Figure 5a of the paper.
Critical Field Strength Hc1 for Ba:11; [Ba(K)-Bi-O]
Temperature (K) Crit.Mag.Field Strength Hc1 (kA/m)
5 7.4925
10 7.0620
15 6.2647
20 4.9877
25 1.1296
Measurement Method: SQUID magnetometer
"Magnetic properties were measured using a Quantum Design SQUID Magnetometer with a superconducting coil. The zero-field cooled (ZFC) magnetization M(T) was determined by first cooling the sample to 4.2 K at H=0, switching on the field, and then measuring the sample's moment as it warmed up. The field-cooled (FC) magnetization was taken during the sample cooling from above Tc at fixed H... (199 A/m = 2.5 Oe)... Based on Bean's model Jc can be estimated... H (is) defined as the deviation point from linearity in M(H)... H is determined from the onset of the diamagnetic signal at constant H... Following the WHH theory... other parameters were calculated from H and H . The irreversibility boundary at a fixed H was defined as the deviation point between the ZFC and FC magnetization curves."

Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.