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: Electrical and Magnetic Transport Properties of Laser- Deposited Ba(1-x)K(x)BiO3 Thin Films
Author(s): R.A. Schweinfurth, C.E. Platt, M.R. Teepe, and D.J. Van Harlingen
Publication: Applied Physics Letters Volume: 61 Issue: 4 Year: 1992 Page(s): 480-482
Editor(s): Not Available
Publisher: American Institute of Physics
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Current Density, Critical Flux Density Hc2, Resistivity (normal state)

Materials and Properties

Ba:11; [Ba(K)-Bi-O]
Material Specification for Ba:11; [Ba(K)-Bi-O] Process: Laser Ablation
Notes: The authors cite B. M. Moon et al., Appl. Phys. Lett., Vol. 59, 1905 (1991), and summarize the procedure as follows. "The... films were grown by in situ pulsed laser deposition from a Ba0.6K0.4BiO3 target using an ArF excimer laser... The films were deposited at 580-620 °C in pure Ar at a pressure of (133 Pa = 1 torr) and oxygenated in a 12 min soak in (0.1 MPa = 1 atm) O2 introduced only after the films were cooled to 410 °C. All of the films reported here were grown on (100)-MgO substrates and have a nominal thickness of 1500 σ. The films exhibit a single-crystalline phase with (100) orientation, in-plane epitaxy, and composition close to the starting pellet stoichiometry."
Formula: Ba1-xKxBiO3
Informal Name: Ba:11
Chemical Family: Ba(K)-Bi-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Critical Current Density for Ba:11; [Ba(K)-Bi-O]
Magnetic Field (T) Temperature (K) Critical Current Density (kA/cm2)
0 3 3040
0 6 3040
0 10 2800
0 14 2300
0 18 1750
0 21 1150
0 24 550
0 27 90
1 12 670
1 15 490
1 18 280
1 20 170
1 22 70
1 24 9
2 5 670
2 8 580
2 11 430
2 14 280
2 17 160
2 19 70
2 21 20
2 22 9
3 5 400
3 9 300
3 12 200
3 14 120
3 17 50
3 19 8
3 20 7
4 5 230
4 8 200
4 10 130
4 13 70
4 15 20
4 17 10
5 5 110
5 7 90
5 10 50
5 12 30
5 14 7
5 16 7
Measurement Method: Electrical transport
Electrical resistance and "superconducting critical current density... (were) "measured by transport in a 25 µm wide line patterned (on the) BKBO film... in magnetic fields... applied perpendicular to the film surface... From the field dependence of the onset temperature, determined by extrapolating the magnetoresistance to the normal state value (at Tc),... Hc2 was determined... assuming the Werthamer-Helfand-Hohenberg formula... in the dirty limit Ginzburg-Landau expression... we deduce a coherence length..." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figures 2a, 2b, and 3a of the paper.
Critical Flux Density Hc2 for Ba:11; [Ba(K)-Bi-O]
Tc(onset) (K) Crit.Mag.Flux Density Hc2 (T)
21 6
22 5
23 4
24 3
26 2
27 1
28 0
Measurement Method: Electrical transport
Electrical resistance and "superconducting critical current density... (were) "measured by transport in a 25 µm wide line patterned (on the) BKBO film... in magnetic fields... applied perpendicular to the film surface... From the field dependence of the onset temperature, determined by extrapolating the magnetoresistance to the normal state value (at Tc),... Hc2 was determined... assuming the Werthamer-Helfand-Hohenberg formula... in the dirty limit Ginzburg-Landau expression... we deduce a coherence length..." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 3b of the paper.
Resistivity (normal state) for Ba:11; [Ba(K)-Bi-O]
Magnetic Field (T) Temperature (K) Resistivity (normal state) (mΩ·cm)
0 27.5 0.002
0 27.8 0.009
0 28.1 0.111
0 28.2 0.195
0 28.3 0.232
0 28.7 0.246
0 30.0 0.249
1 25.9 0.004
1 26.1 0.011
1 26.4 0.065
1 26.6 0.123
1 26.7 0.166
1 26.8 0.198
1 27.1 0.235
1 27.9 0.242
1 28.5 0.241
2 24.0 0.006
2 24.4 0.031
2 24.7 0.067
2 25.0 0.117
2 25.2 0.156
2 25.5 0.199
2 25.7 0.224
2 26.1 0.242
2 26.9 0.245
3 21.9 0.001
3 22.5 0.017
3 23.0 0.045
3 23.2 0.085
3 23.4 0.121
3 23.8 0.164
3 24.0 0.204
3 24.3 0.222
3 24.9 0.239
3 25.4 0.243
3 26.0 0.246
4 20.0 0.002
4 20.7 0.023
4 21.3 0.059
4 21.8 0.110
4 22.3 0.164
4 22.6 0.203
4 23.1 0.229
4 23.5 0.243
4 24.2 0.246
4 24.9 0.250
5 18.5 0.003
5 19.1 0.017
5 19.8 0.060
5 20.7 0.125
5 21.0 0.172
5 21.6 0.212
5 22.2 0.237
5 23.1 0.251
5 23.7 0.247
6 15.0 0.001
6 16.1 0.006
6 17.1 0.016
6 18.1 0.055
6 18.8 0.098
6 19.6 0.152
6 20.3 0.202
6 20.9 0.227
6 21.4 0.237
6 22.2 0.240
6 23.3 0.243
Measurement Method: Electrical transport
Electrical resistance and "superconducting critical current density... (were) "measured by transport in a 25 µm wide line patterned (on the) BKBO film... in magnetic fields... applied perpendicular to the film surface... From the field dependence of the onset temperature, determined by extrapolating the magnetoresistance to the normal state value (at Tc),... Hc2 was determined... assuming the Werthamer-Helfand-Hohenberg formula... in the dirty limit Ginzburg-Landau expression... we deduce a coherence length..." No additional measurement details were noted.

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