Material Specification for Dy:123; [Dy-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Preparation of 123 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles at temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C. Reaction occurred over a period of four days with several intermediate reginds. The samples were then annealed, in flowing oxygen gas, at 880 °C for 12 h, cooled at 1 °C/min to 450 °C and annealed for a further 24 h. The samples were then furnace cooled under oxygen gas.
Preparation of 124 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles. Again temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C for a period of four days were used; several intermediate regrinds took place during the reaction period. ... These mixtures were then fired, in gold crucibles, in a high pressure furnace at 1020 °C under (40.5 MPa = 400 atm) of flowing oxygen gas for 4 h and then reground. This reaction process under high pressure oxygen was repeated 3-4 times in order to effect complete reaction."
Formula: DyBa2Cu3O7-x
Informal Name: Dy:123
Chemical Family: Dy-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Dy:123; [Dy-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.84215(4) |
3.88721(6) |
11.6777(2) |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Dy |
296 |
0.5 |
0.5 |
0.5 |
| Ba |
296 |
0.5 |
0.5 |
0.1859(4) |
| Cu(1) |
296 |
0 |
0 |
0 |
| Cu(2) |
296 |
0 |
0 |
0.3542(3) |
| O(1) |
296 |
0 |
0 |
0.1579(4) |
| O(2) |
296 |
0.5 |
0 |
0.3769(4) |
| O(3) |
296 |
0 |
0.5 |
0.3794(4) |
| O(4) |
296 |
0 |
0.5 |
0 |
Measurement Method: Neutron diffraction
"Powder neutron diffraction data were obtained, at 298 K, using HRPD, the very high resolution powder diffractometer on ISIS at the Rutherford Appleton Laboratory. 20 g of the Ln123 samples, and 10 g of the Ln124 samples, were sealed in thin wall vanadium cans of diameter 10 mm, and the data were collected using the backscattering detectors, with the sample in the 1 m position, for periods ranging from 4 to 10 h. The time-of-flight range for the gathered data was 30000 to 130000 ms corresponding to the d-spacing range 0.6 to 2.6 σ... The structure refinements of these compounds were carried out using the program REFINE, operating as part of the Cambridge Crystallographic Subroutine Library on the VAX computer at the Rutherford Appleton Laboratory."
Cautions: Evaluated Data
Material Specification for Ho:123; [Ho-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Preparation of 123 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles at temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C. Reaction occurred over a period of four days with several intermediate reginds. The samples were then annealed, in flowing oxygen gas, at 880 °C for 12 h, cooled at 1 °C/min to 450 °C and annealed for a further 24 h. The samples were then furnace cooled under oxygen gas.
Preparation of 124 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles. Again temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C for a period of four days were used; several intermediate regrinds took place during the reaction period. ... These mixtures were then fired, in gold crucibles, in a high pressure furnace at 1020 °C under (40.5 MPa = 400 atm) of flowing oxygen gas for 4 h and then reground. This reaction process under high pressure oxygen was repeated 3-4 times in order to effect complete reaction."
Formula: HoBa2Cu3O7-x
Informal Name: Ho:123
Chemical Family: Ho-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Ho:123; [Ho-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.83002(2) |
3.88582(3) |
11.67888(8 |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Ho |
296 |
0.5 |
0.5 |
0.5 |
| Ba |
296 |
0.5 |
0.5 |
0.1859(2) |
| Cu(1) |
296 |
0 |
0 |
0 |
| Cu(2) |
296 |
0 |
0 |
0.3557(2) |
| O(1) |
296 |
0 |
0 |
0.1569(2) |
| O(2) |
296 |
0.5 |
0 |
0.3786(2) |
| O(3) |
296 |
0 |
0.5 |
0.3783(3) |
| O(4) |
296 |
0 |
0.5 |
0 |
Measurement Method: Neutron diffraction
"Powder neutron diffraction data were obtained, at 298 K, using HRPD, the very high resolution powder diffractometer on ISIS at the Rutherford Appleton Laboratory. 20 g of the Ln123 samples, and 10 g of the Ln124 samples, were sealed in thin wall vanadium cans of diameter 10 mm, and the data were collected using the backscattering detectors, with the sample in the 1 m position, for periods ranging from 4 to 10 h. The time-of-flight range for the gathered data was 30000 to 130000 ms corresponding to the d-spacing range 0.6 to 2.6 σ... The structure refinements of these compounds were carried out using the program REFINE, operating as part of the Cambridge Crystallographic Subroutine Library on the VAX computer at the Rutherford Appleton Laboratory."
Cautions: Evaluated Data
Material Specification for Er:123; [Er-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Preparation of 123 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles at temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C. Reaction occurred over a period of four days with several intermediate reginds. The samples were then annealed, in flowing oxygen gas, at 880 °C for 12 h, cooled at 1 °C/min to 450 °C and annealed for a further 24 h. The samples were then furnace cooled under oxygen gas.
Preparation of 124 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles. Again temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C for a period of four days were used; several intermediate regrinds took place during the reaction period. ... These mixtures were then fired, in gold crucibles, in a high pressure furnace at 1020 °C under (40.5 MPa = 400 atm) of flowing oxygen gas for 4 h and then reground. This reaction process under high pressure oxygen was repeated 3-4 times in order to effect complete reaction."
Formula: ErBa2Cu3O7-x
Informal Name: Er:123
Chemical Family: Er-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Er:123; [Er-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.82239(1) |
3.88247(2) |
11.66664(5 |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Er |
296 |
0.5 |
0.5 |
0.5 |
| Ba |
296 |
0.5 |
0.5 |
0.1852(2) |
| Cu(1) |
296 |
0 |
0 |
0 |
| Cu(2) |
296 |
0 |
0 |
0.3563(2) |
| O(1) |
296 |
0 |
0 |
0.1579(2) |
| O(2) |
296 |
0.5 |
0 |
0.3794(2) |
| O(3) |
296 |
0 |
0.5 |
0.3786(2) |
| O(4) |
296 |
0 |
0.5 |
0 |
Measurement Method: Neutron diffraction
"Powder neutron diffraction data were obtained, at 298 K, using HRPD, the very high resolution powder diffractometer on ISIS at the Rutherford Appleton Laboratory. 20 g of the Ln123 samples, and 10 g of the Ln124 samples, were sealed in thin wall vanadium cans of diameter 10 mm, and the data were collected using the backscattering detectors, with the sample in the 1 m position, for periods ranging from 4 to 10 h. The time-of-flight range for the gathered data was 30000 to 130000 ms corresponding to the d-spacing range 0.6 to 2.6 σ... The structure refinements of these compounds were carried out using the program REFINE, operating as part of the Cambridge Crystallographic Subroutine Library on the VAX computer at the Rutherford Appleton Laboratory."
Cautions: Evaluated Data
Material Specification for Dy:124; [Dy-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Preparation of 123 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles at temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C. Reaction occurred over a period of four days with several intermediate reginds. The samples were then annealed, in flowing oxygen gas, at 880 °C for 12 h, cooled at 1 °C/min to 450 °C and annealed for a further 24 h. The samples were then furnace cooled under oxygen gas.
Preparation of 124 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles. Again temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C for a period of four days were used; several intermediate regrinds took place during the reaction period. ... These mixtures were then fired, in gold crucibles, in a high pressure furnace at 1020 °C under (40.5 MPa = 400 atm) of flowing oxygen gas for 4 h and then reground. This reaction process under high pressure oxygen was repeated 3-4 times in order to effect complete reaction."
Formula: DyBa2Cu4O8
Informal Name: Dy:124
Chemical Family: Dy-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Dy:124; [Dy-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.84891(2) |
3.87549(1) |
27.2373(1) |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Dy |
296 |
0.5 |
0.5 |
0 |
| Ba |
296 |
0.5 |
0.5 |
0.1358(1) |
| Cu(1) |
296 |
0 |
0 |
0.21249(9) |
| Cu(2) |
296 |
0 |
0 |
0.0618(1) |
| O(1) |
296 |
0 |
0 |
0.1452(1) |
| O(2) |
296 |
0.5 |
0 |
0.0528(1) |
| O(3) |
296 |
0 |
0.5 |
0.0528(1) |
| O(4) |
296 |
0 |
0.5 |
0.2189(1) |
Measurement Method: Neutron diffraction
"Powder neutron diffraction data were obtained, at 298 K, using HRPD, the very high resolution powder diffractometer on ISIS at the Rutherford Appleton Laboratory. 20 g of the Ln123 samples, and 10 g of the Ln124 samples, were sealed in thin wall vanadium cans of diameter 10 mm, and the data were collected using the backscattering detectors, with the sample in the 1 m position, for periods ranging from 4 to 10 h. The time-of-flight range for the gathered data was 30000 to 130000 ms corresponding to the d-spacing range 0.6 to 2.6 σ... The structure refinements of these compounds were carried out using the program REFINE, operating as part of the Cambridge Crystallographic Subroutine Library on the VAX computer at the Rutherford Appleton Laboratory."
Cautions: Evaluated Data
Material Specification for Ho:124; [Ho-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Preparation of 123 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles at temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C. Reaction occurred over a period of four days with several intermediate reginds. The samples were then annealed, in flowing oxygen gas, at 880 °C for 12 h, cooled at 1 °C/min to 450 °C and annealed for a further 24 h. The samples were then furnace cooled under oxygen gas.
Preparation of 124 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles. Again temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C for a period of four days were used; several intermediate regrinds took place during the reaction period. ... These mixtures were then fired, in gold crucibles, in a high pressure furnace at 1020 °C under (40.5 MPa = 400 atm) of flowing oxygen gas for 4 h and then reground. This reaction process under high pressure oxygen was repeated 3-4 times in order to effect complete reaction."
Formula: HoBa2Cu4O8
Informal Name: Ho:124
Chemical Family: Ho-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Ho:124; [Ho-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.84305(1) |
3.87304(1) |
27.22690(6 |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Ho |
296 |
0.5 |
0.5 |
0 |
| Ba |
296 |
0.5 |
0.5 |
0.13492(7) |
| Cu(1) |
296 |
0 |
0 |
0.21268(4) |
| Cu(2) |
296 |
0 |
0 |
0.06176(5) |
| O(1) |
296 |
0 |
0 |
0.14526(6) |
| O(2) |
296 |
0.5 |
0 |
0.05271(6) |
| O(3) |
296 |
0 |
0.5 |
0.05290(6) |
| O(4) |
296 |
0 |
0.5 |
0.21812(6) |
Measurement Method: Neutron diffraction
"Powder neutron diffraction data were obtained, at 298 K, using HRPD, the very high resolution powder diffractometer on ISIS at the Rutherford Appleton Laboratory. 20 g of the Ln123 samples, and 10 g of the Ln124 samples, were sealed in thin wall vanadium cans of diameter 10 mm, and the data were collected using the backscattering detectors, with the sample in the 1 m position, for periods ranging from 4 to 10 h. The time-of-flight range for the gathered data was 30000 to 130000 ms corresponding to the d-spacing range 0.6 to 2.6 σ... The structure refinements of these compounds were carried out using the program REFINE, operating as part of the Cambridge Crystallographic Subroutine Library on the VAX computer at the Rutherford Appleton Laboratory."
Cautions: Evaluated Data
Material Specification for Er:124; [Er-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Preparation of 123 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles at temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C. Reaction occurred over a period of four days with several intermediate reginds. The samples were then annealed, in flowing oxygen gas, at 880 °C for 12 h, cooled at 1 °C/min to 450 °C and annealed for a further 24 h. The samples were then furnace cooled under oxygen gas.
Preparation of 124 materials:
Stoichiometric amounts of high purity Ln2O3, BaCO3 and CuO were thoroughly mixed using an agate mortar and pestle and fired in alumina crucibles. Again temperatures inversely proportional to the lanthanide ion size and ranging between 880 °C and 920 °C for a period of four days were used; several intermediate regrinds took place during the reaction period. ... These mixtures were then fired, in gold crucibles, in a high pressure furnace at 1020 °C under (40.5 MPa = 400 atm) of flowing oxygen gas for 4 h and then reground. This reaction process under high pressure oxygen was repeated 3-4 times in order to effect complete reaction."
Formula: ErBa2Cu4O8
Informal Name: Er:124
Chemical Family: Er-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Er:124; [Er-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.83716(1) |
3.87031(1) |
27.20901(6 |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Er |
296 |
0.5 |
0.5 |
0 |
| Ba |
296 |
0.5 |
0.5 |
0.13427(8) |
| Cu(1) |
296 |
0 |
0 |
0.21270(5) |
| Cu(2) |
296 |
0 |
0 |
0.06142(5) |
| O(1) |
296 |
0 |
0 |
0.14535(6) |
| O(2) |
296 |
0.5 |
0 |
0.05207(6) |
| O(3) |
296 |
0 |
0.5 |
0.05207(6) |
| O(4) |
296 |
0 |
0.5 |
0.21814(6) |
Measurement Method: Neutron diffraction
"Powder neutron diffraction data were obtained, at 298 K, using HRPD, the very high resolution powder diffractometer on ISIS at the Rutherford Appleton Laboratory. 20 g of the Ln123 samples, and 10 g of the Ln124 samples, were sealed in thin wall vanadium cans of diameter 10 mm, and the data were collected using the backscattering detectors, with the sample in the 1 m position, for periods ranging from 4 to 10 h. The time-of-flight range for the gathered data was 30000 to 130000 ms corresponding to the d-spacing range 0.6 to 2.6 σ... The structure refinements of these compounds were carried out using the program REFINE, operating as part of the Cambridge Crystallographic Subroutine Library on the VAX computer at the Rutherford Appleton Laboratory."
Cautions: Evaluated Data
