Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Melt Processed
Notes: The authors cite M. Murakami, Mod. Phys. Lett. B, Vol. 4, 163 (1990), and summarize the procedure as follows. "The YBa2Cu3Ox sample with (a mole fraction of 30 %) of Y2BaCuO5 inclusions was prepared by the MPMG process. In this method, the Y-Ba-Cu-O sample is first melted at temperatures above 1300 °C and cooled down to room temperature. Later it is reheated up to a temperature region between 1000-1200 °C followed by rapid cooling to a temperature at which the superconducting phase starts nucleating. During remelting Y2O3 reacts with the liquid to form Y2BaCuO5 which in turn reacts with the liquid to produce the YBa2Cu3O7 phase. As a result, fine Y211 particles of about 1 µm in diameter are dispersed in the matrix of 123 phase."
Formula: YBa2Cu3Ox·yY:211
Informal Name: Y:123
Chemical Family: Y-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 Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Density (g cm-3) |
| 295 |
5.952 |
Measurement Method: Archimedes' method
"The bulk density (was) determined by the Immersion technique..." No additional measurement details were noted.
Cautions: Unevaluated Data
Debye Temperature for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Debye Temperature (K) |
| 295 |
379 |
Measurement Method: Ultrasonic method
The authors cite Y.V. Ramana et al., Acoustics Lett., Vol. 13, 85 (1988), and summarize the procedure as follows. "Ultrasonic longitudinal velocity measurements were carried out by the pulse transmission technique over a temperature range of 80-300 K on a sample with dimensions of 4 mm in thickness and 12 mm in diameter. X- and Y-cut PZT transducers with a fundamental frequency of 1 MHz were used for transmitting and receiving the longitudinal (V
) and shear (Vc) waves. The transit time of ultrasound has been measured up to an accuracy of 0.01 µs using a 100 MHz digital storage oscilloscope [Tektronix Model No. 2221]. ... The overall accuracy of the velocity measurements work out to be ±10 m/s."
Cautions: Evaluated Data
Elastic Modulus for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Elastic Modulus (GPa) |
| 80 |
165 |
| 88 |
165 |
| 98 |
166 |
| 110 |
168 |
| 117 |
169 |
| 129 |
164 |
| 138 |
159 |
| 148 |
156 |
| 160 |
154 |
| 167 |
151 |
| 179 |
146 |
| 190 |
143 |
| 198 |
139 |
| 208 |
137 |
| 219 |
132 |
| 227 |
130 |
| 239 |
126 |
| 248 |
121 |
| 258 |
118 |
| 269 |
115 |
| 279 |
107 |
| 288 |
104 |
| 300 |
101 |
Measurement Method: Ultrasonic method
The authors cite Y.V. Ramana et al., Acoustics Lett., Vol. 13, 85 (1988), and summarize the procedure as follows. "Ultrasonic longitudinal velocity measurements were carried out by the pulse transmission technique over a temperature range of 80-300 K on a sample with dimensions of 4 mm in thickness and 12 mm in diameter. X- and Y-cut PZT transducers with a fundamental frequency of 1 MHz were used for transmitting and receiving the longitudinal (V
) and shear (Vc) waves. The transit time of ultrasound has been measured up to an accuracy of 0.01 µs using a 100 MHz digital storage oscilloscope [Tektronix Model No. 2221]. ... The overall accuracy of the velocity measurements work out to be ±10 m/s."
Cautions: Evaluated Data
"As the porosity of the samples is about 4%, the... elasticity parameters have been corrected to zero porosity..."
Digitized data were obtained from Figure 2 of the paper.
Shear Modulus for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Shear Modulus (GPa) |
| 295 |
45.4 |
Measurement Method: Ultrasonic method
The authors cite Y.V. Ramana et al., Acoustics Lett., Vol. 13, 85 (1988), and summarize the procedure as follows. "Ultrasonic longitudinal velocity measurements were carried out by the pulse transmission technique over a temperature range of 80-300 K on a sample with dimensions of 4 mm in thickness and 12 mm in diameter. X- and Y-cut PZT transducers with a fundamental frequency of 1 MHz were used for transmitting and receiving the longitudinal (V
) and shear (Vc) waves. The transit time of ultrasound has been measured up to an accuracy of 0.01 µs using a 100 MHz digital storage oscilloscope [Tektronix Model No. 2221]. ... The overall accuracy of the velocity measurements work out to be ±10 m/s."
Cautions: Evaluated Data
"As the porosity of the samples is about 4%, the... elasticity parameters have been corrected to zero porosity..."
Poisson's Ratio for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Poisson's Ratio (no unit) |
| 295 |
0.14 |
Measurement Method: Ultrasonic method
The authors cite Y.V. Ramana et al., Acoustics Lett., Vol. 13, 85 (1988), and summarize the procedure as follows. "Ultrasonic longitudinal velocity measurements were carried out by the pulse transmission technique over a temperature range of 80-300 K on a sample with dimensions of 4 mm in thickness and 12 mm in diameter. X- and Y-cut PZT transducers with a fundamental frequency of 1 MHz were used for transmitting and receiving the longitudinal (V
) and shear (Vc) waves. The transit time of ultrasound has been measured up to an accuracy of 0.01 µs using a 100 MHz digital storage oscilloscope [Tektronix Model No. 2221]. ... The overall accuracy of the velocity measurements work out to be ±10 m/s."
Cautions: Evaluated Data
Bulk Modulus for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Bulk Modulus (GPa) |
| 295 |
48.7 |
Measurement Method: Ultrasonic method
The authors cite Y.V. Ramana et al., Acoustics Lett., Vol. 13, 85 (1988), and summarize the procedure as follows. "Ultrasonic longitudinal velocity measurements were carried out by the pulse transmission technique over a temperature range of 80-300 K on a sample with dimensions of 4 mm in thickness and 12 mm in diameter. X- and Y-cut PZT transducers with a fundamental frequency of 1 MHz were used for transmitting and receiving the longitudinal (V
) and shear (Vc) waves. The transit time of ultrasound has been measured up to an accuracy of 0.01 µs using a 100 MHz digital storage oscilloscope [Tektronix Model No. 2221]. ... The overall accuracy of the velocity measurements work out to be ±10 m/s."
Cautions: Evaluated Data
"As the porosity of the samples is about 4%, the... elasticity parameters have been corrected to zero porosity..."
Sound Velocity for Y:123; [Y-Ba-Cu-O]
| Mode () |
Temperature (K) |
Sound Velocity (km/s) |
| Longitudinal |
295 |
4.120 |
| Shear |
295 |
2.650 |
Measurement Method: Ultrasonic method
The authors cite Y.V. Ramana et al., Acoustics Lett., Vol. 13, 85 (1988), and summarize the procedure as follows. "Ultrasonic longitudinal velocity measurements were carried out by the pulse transmission technique over a temperature range of 80-300 K on a sample with dimensions of 4 mm in thickness and 12 mm in diameter. X- and Y-cut PZT transducers with a fundamental frequency of 1 MHz were used for transmitting and receiving the longitudinal (V
) and shear (Vc) waves. The transit time of ultrasound has been measured up to an accuracy of 0.01 µs using a 100 MHz digital storage oscilloscope [Tektronix Model No. 2221]. ... The overall accuracy of the velocity measurements work out to be ±10 m/s."
Cautions: Evaluated Data
