Material Specification for CaLa:123; [Ca-La(Ba)-Cu-O]
Process: Solid State Reaction
Notes: "The... sample was prepared by solid state reaction of appropriate mixtures of high-purity (99.9%) CaCO3, BaCO3, La2O3 and CuO powders. The powders were mixed and ground fine in an agate mortar. The mixture was first calcined at 900 °C for 24 h in air and then pulverized and recalcined at 950 °C for 24 h, and then pulverized again and pressed into pellets, sintered at 978 °C for 24 h in air, and then annealed at 540 °C for 24 h in air. The sample size is 13 x 5 mm2, and the mass density is 5.4 g/cm3, about 91% of the theoretical density."
Formula: CaLaBaCu3O7-x
Informal Name: CaLa:123
Chemical Family: Ca-La(Ba)-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Density (mass) for CaLa:123; [Ca-La(Ba)-Cu-O]
Measurement Method: Unknown Density Method
Cautions: Unevaluated Data
No measurement details were noted.
Critical Temperature for CaLa:123; [Ca-La(Ba)-Cu-O]
| Critical Temperature (K) |
| 28 |
Measurement Method: Ac susceptibility
Cautions: Unevaluated Data
No measurement details were noted.
Debye Temperature for CaLa:123; [Ca-La(Ba)-Cu-O]
| Temperature (K) |
Debye Temperature (K) |
| 11 |
389.76 |
| 13 |
389.75 |
| 15 |
389.74 |
| 19 |
389.73 |
| 25 |
389.72 |
| 30 |
389.71 |
| 33 |
389.68 |
| 37 |
389.65 |
| 41 |
289.63 |
| 45 |
389.59 |
| 49 |
389.56 |
Measurement Method: Ultrasonic method
"The ultrasonic measurements... were performed with the Matec ultrasonic system (model 6600). A quartz transducer with 10 MHz fundamental frequency was bonded to one of the two flat and parallel sides of the sample with Nonaq grease. More than 12 echoes can be observed at room temperature. The pulse-echo method was used to measure the ultrasonic attenuation of the sample, and the pulse-echo-overlap method was used to measure the sound velocity of the sample. A warm-up or cooling-down rate of less than 2 K/min was used throughout the measurement. ... The Debye temperature, Young's modulus, bulk modulus and Poisson's ratio were calculated according to the transverse and longitudinal sound velocities in the sample ... by the conventional method..."
Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
Elastic Modulus for CaLa:123; [Ca-La(Ba)-Cu-O]
| Temperature (K) |
Elastic Modulus (GPa) |
| 11 |
105.84 |
| 13 |
105.83 |
| 15 |
105.83 |
| 19 |
105.82 |
| 23 |
105.81 |
| 27 |
105.81 |
| 33 |
105.79 |
| 37 |
105.77 |
| 41 |
105.75 |
| 45 |
105.73 |
| 47 |
105.71 |
| 49 |
105.70 |
Measurement Method: Ultrasonic method
"The ultrasonic measurements... were performed with the Matec ultrasonic system (model 6600). A quartz transducer with 10 MHz fundamental frequency was bonded to one of the two flat and parallel sides of the sample with Nonaq grease. More than 12 echoes can be observed at room temperature. The pulse-echo method was used to measure the ultrasonic attenuation of the sample, and the pulse-echo-overlap method was used to measure the sound velocity of the sample. A warm-up or cooling-down rate of less than 2 K/min was used throughout the measurement. ... The Debye temperature, Young's modulus, bulk modulus and Poisson's ratio were calculated according to the transverse and longitudinal sound velocities in the sample ... by the conventional method..."
Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
Poisson's Ratio for CaLa:123; [Ca-La(Ba)-Cu-O]
| Temperature (K) |
Poisson's Ratio (no unit) |
| 7 |
0.2634 |
| 8 |
0.2633 |
| 10 |
0.2633 |
| 25 |
0.2632 |
| 32 |
0.2632 |
| 42 |
0.2632 |
| 46 |
0.2632 |
| 55 |
0.2631 |
| 57 |
0.2631 |
| 70 |
0.2630 |
| 77 |
0.2629 |
| 80 |
0.2629 |
| 86 |
0.2629 |
| 88 |
0.2630 |
| 98 |
0.2630 |
Measurement Method: Ultrasonic method
"The ultrasonic measurements... were performed with the Matec ultrasonic system (model 6600). A quartz transducer with 10 MHz fundamental frequency was bonded to one of the two flat and parallel sides of the sample with Nonaq grease. More than 12 echoes can be observed at room temperature. The pulse-echo method was used to measure the ultrasonic attenuation of the sample, and the pulse-echo-overlap method was used to measure the sound velocity of the sample. A warm-up or cooling-down rate of less than 2 K/min was used throughout the measurement. ... The Debye temperature, Young's modulus, bulk modulus and Poisson's ratio were calculated according to the transverse and longitudinal sound velocities in the sample ... by the conventional method..."
Cautions: Evaluated Data
Digitized data were obtained from Fig. 7 of the paper.
Sound Velocity for CaLa:123; [Ca-La(Ba)-Cu-O]
| Mode () |
Cycle () |
Temperature (K) |
Sound Velocity (km/s) |
| Longitudinal |
heating |
10 |
4.9472 |
| Longitudinal |
heating |
20 |
4.9466 |
| Longitudinal |
heating |
40 |
4.9448 |
| Longitudinal |
heating |
60 |
4.9414 |
| Longitudinal |
heating |
80 |
4.9366 |
| Longitudinal |
heating |
90 |
4.9340 |
| Longitudinal |
heating |
98 |
4.9322 |
| Longitudinal |
cooling |
10 |
4.9475 |
| Longitudinal |
cooling |
20 |
4.9471 |
| Longitudinal |
cooling |
40 |
4.9453 |
| Longitudinal |
cooling |
60 |
4.9423 |
| Longitudinal |
cooling |
80 |
4.9376 |
| Longitudinal |
cooling |
90 |
4.9341 |
| Longitudinal |
cooling |
98 |
4.9323 |
| Transverse |
-- |
10 |
2.8042 |
| Transverse |
-- |
20 |
2.8039 |
| Transverse |
-- |
40 |
2.8033 |
| Transverse |
-- |
60 |
2.8018 |
| Transverse |
-- |
80 |
2.7998 |
| Transverse |
-- |
90 |
2.7981 |
| Transverse |
-- |
98 |
2.7967 |
Measurement Method: Ultrasonic method
"The ultrasonic measurements... were performed with the Matec ultrasonic system (model 6600). A quartz transducer with 10 MHz fundamental frequency was bonded to one of the two flat and parallel sides of the sample with Nonaq grease. More than 12 echoes can be observed at room temperature. The pulse-echo method was used to measure the ultrasonic attenuation of the sample, and the pulse-echo-overlap method was used to measure the sound velocity of the sample. A warm-up or cooling-down rate of less than 2 K/min was used throughout the measurement. ... The Debye temperature, Young's modulus, bulk modulus and Poisson's ratio were calculated according to the transverse and longitudinal sound velocities in the sample ... by the conventional method..."
Cautions: Evaluated Data
Digitized data were obtained from Figs. 4 and 5 of the paper.
