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NIST High Temp. Superconducting Materials (HTS) Database:

NIST Standard Reference Database 62

Last Update to Data Content: 1996

DOI: https://doi.org/10.18434/T4KP8J

Bibliographic Information

Title: Crystal Structure of TlBa2Ca2Cu3O9
Author(s): M.A. Subramanian, J.B. Parise, J.C. Calabrese, C.C. Torardi, J. Gopalakrishnan, and A.W. Sleight
Publication: Journal of Solid State Chemistry Volume: 77 Issue: Not Available Year: 1988 Page(s): 192-195
Editor(s): Not Available
Publisher: Academic Press, Inc.
Language: English
Notes: Not Available
Keywords: Material Specification, Density (mass), Crystallography, Critical Temperature

Materials and Properties

Tl:1223; [Tl-Ba-Ca-Cu-O]
Material Specification for Tl:1223; [Tl-Ba-Ca-Cu-O] Process: Solid State Reaction
Notes: "Single crystals... were grown from a copper-rich melt with oxides (Tl2O3, BaO2, CaO2, and CuO) in the molar ratio 1:2:2:4 (Tl:Ba:Ca:Cu) in a seated gold tube. The mixture was heated to 925 °C, held for (6 h), and cooled at 1 °C/min. Plate-like crystals found in the melt were mechanically separated..."
Formula: Tl1.1Ba1.9Ca1.9Cu3O9
Informal Name: Tl:1223
Chemical Family: Tl-Ba-Ca-Cu-O
Chemical Class: Oxide
Structure Type: Single Crystal
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Density (mass) for Tl:1223; [Tl-Ba-Ca-Cu-O]
Density (g cm-3)
6.30
Measurement Method: X-ray diffraction
"Single-crystal X-ray diffraction information... is summarized (as follows): Dimensions (mm) 0.13 x 0.16 x 0.004 Diffractometer Enraf-Nonium CAD4 Radiation MoKα Monochromator Graphite 2θ range (°) 0-60

Cautions: Evaluated Data
Crystallography for Tl:1223; [Tl-Ba-Ca-Cu-O]
Crystal System: Tetragonal
Formula Units per Cell:
Space Group: P4/mmm
Cell Parameters
Temp K a Å b Å c Å
296 3.853(1) -- 15.913(4)
Atomic Coordinates
Atom Temp K a-axis b-axis c-axis
Tl(1) 296 0.085(2) 0.00 0.00
Ba(1) 296 0.50 0.50 0.1729(1)
Cu(1) 296 0.00 0.00 0.50
Cu(2) 296 0.00 0.00 0.2991(2)
Ca(1) 296 0.50 0.50 0.3953(3)
O(1) 296 0.00 0.50 0.50
O(2) 296 0.00 0.50 0.3019(7)
O(3) 296 0.00 0.00 0.1277(11)
O(4) 296 0.50 0.50 0.00
Measurement Method: X-ray diffraction
"Single-crystal X-ray diffraction information... is summarized (as follows): Dimensions (mm) 0.13 x 0.16 x 0.004 Diffractometer Enraf-Nonium CAD4 Radiation MoKα Monochromator Graphite 2θ range (°) 0-60

Cautions: Evaluated Data
Critical Temperature for Tl:1223; [Tl-Ba-Ca-Cu-O]
Critical Temperature (K)
110
Measurement Method: Magnetic flux exclusion

Cautions: Unevaluated Data
No measurement details were noted. The value quoted is Tc (onset).