Material Specification for Hg:1223; [Hg-Ba-Ca-Cu-O]
Process: Solid State Reaction
Notes: The authors cite R.L. Meng et al., Physica C, Vol. 216, 21 (1993), and summarize the procedure as follows. "Single crystals... were grown by a single step synthesis route... (followed by) annealing for 6 h at 300 °C under flowing oxygen..."
Formula: HgBa2Ca2Cu3O8+x
Informal Name: Hg:1223
Chemical Family: Hg-Ba-Ca-Cu-O
Chemical Class: Oxide
Structure Type: Single Crystal
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Hg:1223; [Hg-Ba-Ca-Cu-O]
| Crystal System: | Tetragonal |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.851 |
-- |
15.822 |
Atomic Coordinates
| Atom |
Temp
K
|
a-axis |
b-axis |
c-axis |
| Hg |
296 |
0 |
0 |
0 |
| Ba |
296 |
0.5 |
0.5 |
0.1734 |
| Cu(1) |
296 |
0 |
0 |
0.5 |
| Cu(2) |
296 |
0 |
0 |
0.30054 |
| Ca |
296 |
0.5 |
0.5 |
0.39653 |
| O(1) |
296 |
0.5 |
0 |
0.5 |
| O(2) |
296 |
0.5 |
0 |
0.30136 |
| O(3) |
296 |
0 |
0 |
0.1304 |
Measurement Method: X-ray diffraction
"The X-ray structure determination (was) based on 466 independent reflections from a single crystal... Numerical absorption corrections and anisotropic temperature refinements (were used)." No additional measurement details were noted.
Cautions: Unevaluated Data
Critical Temperature for Hg:1223; [Hg-Ba-Ca-Cu-O]
| Critical Temperature (K) |
| 135 |
Measurement Method: SQUID magnetometer
"The use of a SQUID magnetometer allows measurements at low fields despite the small size of the crystals. The excitation field H was applied either parallel... or perpendicular... to the (a,b)-CuO
2 planes. The magnetization was measured parallel to the field... applying a field of (796 A/m = 10 Oe) at low temperature (ZFC procedure)..."
Cautions: Evaluated Data
Magnetic Susceptibility for Hg:1223; [Hg-Ba-Ca-Cu-O]
| Angle(c,H) (degrees) |
Temperature (K) |
Magnetic Susceptibility (arbitrary) |
| 90 |
51 |
-1.00 |
| 90 |
62 |
-1.00 |
| 90 |
83 |
-1.00 |
| 90 |
98 |
-1.00 |
| 90 |
109 |
-0.96 |
| 90 |
119 |
-0.62 |
| 90 |
125 |
-0.25 |
| 90 |
128 |
-0.13 |
| 90 |
131 |
-0.08 |
| 90 |
135 |
0.00 |
| 90 |
145 |
0.00 |
| 0 |
51 |
-1.00 |
| 0 |
66 |
-1.00 |
| 0 |
81 |
-1.00 |
| 0 |
100 |
-1.00 |
| 0 |
110 |
-1.00 |
| 0 |
124 |
-1.00 |
| 0 |
126 |
-0.72 |
| 0 |
130 |
-0.18 |
| 0 |
135 |
0.00 |
| 0 |
140 |
0.00 |
Measurement Method: SQUID magnetometer
"The use of a SQUID magnetometer allows measurements at low fields despite the small size of the crystals. The excitation field H was applied either parallel... or perpendicular... to the (a,b)-CuO
2 planes. The magnetization was measured parallel to the field... applying a field of (796 A/m = 10 Oe) at low temperature (ZFC procedure)..."
Cautions: Evaluated Data
Angle(c,H) is the angle between the c-axis and the direction of the applied magnetic field.
Digitized data were obtained from Figure 3 of the paper.
