Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Solid State Reaction
Notes: 1. 1:2:3 YBa2Cu3O7-x
"Y2O3, BaO2, and CuO were ground and mixed, pressed into pellets, and fired overnight at 950 °C in purified O2. The pellets were then ground and repressed, fired 16 h at 950 °C in purified O2, furnace cooled to 500 °C, and held 2 h. This sequence yielded a specimen with maximum grain dimensions of approximately 40 µm..."
2. 1:2:4 YBa2Cu4O8
"Y2O3, BaO2, and CuO were combined in stoichiometric weights. The 1:2:4 used in this study was prepared in a three-step procedure. The starting materials were converted to 1:2:4 by heating at 960°C in (5.6 MPa = 55 atm) of purified O2 for 24 h. Pellets were made by cold pressing and further densified by hot isostatic pressing in gold capsules at 875°C under a pressure of (203 MPa = 2 x 103 atm). Samples were then fired 1 h at 1010 °C in (4.1 MPa = 40 atm) of purified O2 followed by an anneal at 950 °C, (5.6 MPa = 55 atm) for 24 h. This sequence produced a 90% dense 1:2:4 sample with maximum grain dimensions of about 5 µm..."
Formula: YBa2Cu3O7-x
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:
Elastic Modulus for Y:123; [Y-Ba-Cu-O]
| Elastic Modulus (GPa) |
| 154 ± 16 |
Measurement Method: Indentation test
"... a diamond pyramidal indenter is driven into the surface of the material with a precisely controlled load while its vertical displacement is continuously monitored. The specimen is rigidly mounted to an x-y table that has an indent positioning resolution of ±0.5 µm. The displacement of the indenter is monitored by a capacitive displacement gauge with a resolution of 0.16 nm. The load on the indenter is generated by a calibrated coil and magnet assembly in the load head. The load is controlled by varying the current through the coil assembly and offers a resolution of 0.3 µN. A typical test in this study consisted of 6 segments: (1) surface approach, (2) constant loading rate of 1.0 nm/s to a depth of 250 nm, (3) a 100 s hold,
(4) constant unloading rate at 0.8 nm/s to 20% of the maximum load, (5) a 100 s hold for thermal drift determination, and (6) constant unloading rate at 0.8 nm/s to zero load... The hardness and Young's modulus were calculated using standard mechanical properties microprobe analysis techniques."
Cautions: Evaluated Data
Hardness for Y:123; [Y-Ba-Cu-O]
| Hardness (GPa) |
| 10.3 ± 1.7 |
Measurement Method: Indentation test
"... a diamond pyramidal indenter is driven into the surface of the material with a precisely controlled load while its vertical displacement is continuously monitored. The specimen is rigidly mounted to an x-y table that has an indent positioning resolution of ±0.5 µm. The displacement of the indenter is monitored by a capacitive displacement gauge with a resolution of 0.16 nm. The load on the indenter is generated by a calibrated coil and magnet assembly in the load head. The load is controlled by varying the current through the coil assembly and offers a resolution of 0.3 µN. A typical test in this study consisted of 6 segments: (1) surface approach, (2) constant loading rate of 1.0 nm/s to a depth of 250 nm, (3) a 100 s hold,
(4) constant unloading rate at 0.8 nm/s to 20% of the maximum load, (5) a 100 s hold for thermal drift determination, and (6) constant unloading rate at 0.8 nm/s to zero load... The hardness and Young's modulus were calculated using standard mechanical properties microprobe analysis techniques."
Cautions: Evaluated Data
Material Specification for Y:124; [Y-Ba-Cu-O]
Process: Solid State Reaction
Notes: 1. 1:2:3 YBa2Cu3O7-x
"Y2O3, BaO2, and CuO were ground and mixed, pressed into pellets, and fired overnight at 950 °C in purified O2. The pellets were then ground and repressed, fired 16 h at 950 °C in purified O2, furnace cooled to 500 °C, and held 2 h. This sequence yielded a specimen with maximum grain dimensions of approximately 40 µm..."
2. 1:2:4 YBa2Cu4O8
"Y2O3, BaO2, and CuO were combined in stoichiometric weights. The 1:2:4 used in this study was prepared in a three-step procedure. The starting materials were converted to 1:2:4 by heating at 960°C in (5.6 MPa = 55 atm) of purified O2 for 24 h. Pellets were made by cold pressing and further densified by hot isostatic pressing in gold capsules at 875°C under a pressure of (203 MPa = 2 x 103 atm). Samples were then fired 1 h at 1010 °C in (4.1 MPa = 40 atm) of purified O2 followed by an anneal at 950 °C, (5.6 MPa = 55 atm) for 24 h. This sequence produced a 90% dense 1:2:4 sample with maximum grain dimensions of about 5 µm..."
Formula: YBa2Cu4O8
Informal Name: Y:124
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:
Elastic Modulus for Y:124; [Y-Ba-Cu-O]
| Elastic Modulus (GPa) |
| 116 ± 16 |
Measurement Method: Indentation test
"... a diamond pyramidal indenter is driven into the surface of the material with a precisely controlled load while its vertical displacement is continuously monitored. The specimen is rigidly mounted to an x-y table that has an indent positioning resolution of ±0.5 µm. The displacement of the indenter is monitored by a capacitive displacement gauge with a resolution of 0.16 nm. The load on the indenter is generated by a calibrated coil and magnet assembly in the load head. The load is controlled by varying the current through the coil assembly and offers a resolution of 0.3 µN. A typical test in this study consisted of 6 segments: (1) surface approach, (2) constant loading rate of 1.0 nm/s to a depth of 250 nm, (3) a 100 s hold,
(4) constant unloading rate at 0.8 nm/s to 20% of the maximum load, (5) a 100 s hold for thermal drift determination, and (6) constant unloading rate at 0.8 nm/s to zero load... The hardness and Young's modulus were calculated using standard mechanical properties microprobe analysis techniques."
Cautions: Evaluated Data
Hardness for Y:124; [Y-Ba-Cu-O]
Measurement Method: Indentation test
"... a diamond pyramidal indenter is driven into the surface of the material with a precisely controlled load while its vertical displacement is continuously monitored. The specimen is rigidly mounted to an x-y table that has an indent positioning resolution of ±0.5 µm. The displacement of the indenter is monitored by a capacitive displacement gauge with a resolution of 0.16 nm. The load on the indenter is generated by a calibrated coil and magnet assembly in the load head. The load is controlled by varying the current through the coil assembly and offers a resolution of 0.3 µN. A typical test in this study consisted of 6 segments: (1) surface approach, (2) constant loading rate of 1.0 nm/s to a depth of 250 nm, (3) a 100 s hold,
(4) constant unloading rate at 0.8 nm/s to 20% of the maximum load, (5) a 100 s hold for thermal drift determination, and (6) constant unloading rate at 0.8 nm/s to zero load... The hardness and Young's modulus were calculated using standard mechanical properties microprobe analysis techniques."
Cautions: Evaluated Data
