Material Specification for Ba:11; [Ba(K)-Bi-O]
Process: Electrochemical deposition
Notes: "Crystals of BKBO were grown by a electrochemical method... High purity KOH (semiconductor grade) is placed in a platinum crucible and melted at 180 °C. The other components Ba(OH)2•8H2O (98%) and Bi2O3 (99.9%) are added and dissolved into KOH at 210 °C in flowing oxygen gas. Three electrodes are used for electrochemical crystal growth. The anode is platinum wire, the cathode is a platinum crucible and the reference electrode is a plate of metallic bismuth. Crystal growth was performed at 210 °C in oxygen atmosphere under the applied potential of 1 V."
Formula: Ba1-xKxBiO3
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]
| Magnetic Field (T) |
Critical Temperature (K) |
| 0 |
29 |
| 0.5 |
27 |
| 1 |
26 |
| 1.5 |
25 |
| 2 |
24 |
| 3 |
23 |
| 4 |
22 |
| 5 |
21 |
Measurement Method: Four-probe method
"The electrical resistivity was measured at the temperatures from 5 K to 300 K along the
100 direction of the cubic crystal by using a four probe method. The temperature dependences of the upper critical field H
(was) obtained from the midpoint of the resistive transition in the magnetic fields... According to the WHH theory, H
(0)=16.1 T was estimated... The Ginzburg-Landau coherence length... (0) at zero temperature (was) deduced from H
using the dirty limit formula... The lower critical field H
(0), defined as the deviation point from linearity, was determined from initial magnetization curves... penetration depth... (was) obtained by using the values of H
(0) and H
(0)..."
Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Critical Current Density for Ba:11; [Ba(K)-Bi-O]
| Magnetic Field (T) |
Critical Current Density (kA/cm2) |
| 0 |
81 |
| 0.1 |
51 |
| 0.3 |
27 |
| 0.5 |
21 |
| 1 |
18 |
| 2 |
21 |
| 3 |
17 |
| 4 |
13 |
| 5 |
5.3 |
Measurement Method: SQUID magnetometer
"... the low-field DC magnetization was measured using a Quantum Design SQUID magnetometer... The lower critical field H
(0), defined as the deviation point from linearity, was determined from initial magnetization curves... Jc (was) obtained at various fields using Bean's model."
Cautions: Evaluated Data
Digitized data were obtained from Figure 5 of the paper.
Critical Flux Density Hc2 for Ba:11; [Ba(K)-Bi-O]
| Temperature (K) |
Crit.Mag.Flux Density Hc2 (T) |
| 0 |
16.1 |
| 22 |
5.0 |
| 24 |
2.9 |
| 25 |
1.9 |
| 26 |
1.4 |
| 28 |
0.4 |
| 29 |
0.0 |
Measurement Method: Four-probe method
"The electrical resistivity was measured at the temperatures from 5 K to 300 K along the
100 direction of the cubic crystal by using a four probe method. The temperature dependences of the upper critical field H
(was) obtained from the midpoint of the resistive transition in the magnetic fields... According to the WHH theory, H
(0)=16.1 T was estimated... The Ginzburg-Landau coherence length... (0) at zero temperature (was) deduced from H
using the dirty limit formula... The lower critical field H
(0), defined as the deviation point from linearity, was determined from initial magnetization curves... penetration depth... (was) obtained by using the values of H
(0) and H
(0)..."
Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Penetration Depth for Ba:11; [Ba(K)-Bi-O]
| Temperature (K) |
Penetration Depth (σ) |
| 0 |
3690 |
Measurement Method: Four-probe method
"The electrical resistivity was measured at the temperatures from 5 K to 300 K along the
100 direction of the cubic crystal by using a four probe method. The temperature dependences of the upper critical field H
(was) obtained from the midpoint of the resistive transition in the magnetic fields... According to the WHH theory, H
(0)=16.1 T was estimated... The Ginzburg-Landau coherence length... (0) at zero temperature (was) deduced from H
using the dirty limit formula... The lower critical field H
(0), defined as the deviation point from linearity, was determined from initial magnetization curves... penetration depth... (was) obtained by using the values of H
(0) and H
(0)..."
Cautions: Evaluated Data
Coherence Length for Ba:11; [Ba(K)-Bi-O]
| Temperature (K) |
Coherence Length (σ) |
| 0 |
45 |
Measurement Method: Four-probe method
"The electrical resistivity was measured at the temperatures from 5 K to 300 K along the
100 direction of the cubic crystal by using a four probe method. The temperature dependences of the upper critical field H
(was) obtained from the midpoint of the resistive transition in the magnetic fields... According to the WHH theory, H
(0)=16.1 T was estimated... The Ginzburg-Landau coherence length... (0) at zero temperature (was) deduced from H
using the dirty limit formula... The lower critical field H
(0), defined as the deviation point from linearity, was determined from initial magnetization curves... penetration depth... (was) obtained by using the values of H
(0) and H
(0)..."
Cautions: Evaluated Data
Critical Field Strength Hc1 for Ba:11; [Ba(K)-Bi-O]
| Temperature (K) |
Crit.Mag.Field Strength Hc1 (kA/m) |
| 0 |
7.56 |
Measurement Method: SQUID magnetometer
"... the low-field DC magnetization was measured using a Quantum Design SQUID magnetometer... The lower critical field H
(0), defined as the deviation point from linearity, was determined from initial magnetization curves... Jc (was) obtained at various fields using Bean's model."
Cautions: Unevaluated Data
