Hts Logo

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: Structure and Superconducting Properties of a New Family of Thallium Cuprates, TlSr3-xLnxCu2O7
Author(s): V. Manivannan, N. Rangavittal, J. Gopalakrishnan, and C.N.R. Rao
Publication: Physica C Volume: 208 Issue: Not Available Year: 1993 Page(s): 253-258
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Crystallography, Critical Temperature, Magnetic Susceptibility

Materials and Properties

Tl:132; [Tl-Sr(Pr)-Cu-O]
Tl:132; [Tl-Sr(Nd)-Cu-O]
Tl:132; [Tl-Sr(Y)-Cu-O]
Material Specification for Tl:132; [Tl-Sr(Pr)-Cu-O] Process: Solid State Reaction
Notes: "Cuprates of the formula TlSr3-xLnxCu2O7 (Ln=Nd, Pr, Y) were prepared by reacting calculated quantities of Tl2O3 with an oxide matrix containing Y, Nd or Pr, Sr and Cu (prepared initially by heating the mixture of corresponding oxides and carbonates at 1183 K for 12 h) at 1170-1200 K for 3-12 h in sealed silver tubes."
Formula: TlSr3-xPrxCu2O7
Informal Name: Tl:132
Chemical Family: Tl-Sr(Pr)-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Crystallography for Tl:132; [Tl-Sr(Pr)-Cu-O]
Crystal System: Tetragonal
Formula Units per Cell:
Space Group: P4/mmm
Cell Parameters
x (formula units) Temp K a Å b Å c Å
0.6 296 3.8555 -- 12.18
0.7 296 3.8562 -- 12.17
0.75 296 3.8587 -- 12.15
0.8 296 3.8647 -- 12.14
0.9 296 3.8671 -- 12.12
1.0 296 3.8696 -- 12.10
Atomic Coordinates
x (formula units) Atom Temp K a-axis b-axis c-axis
0.7 Tl 296 0 0 0.5
0.7 Sr(1) 296 0.5 0.5 0.290(2)
0.7 Pr/Sr 296 0.5 0.5 0.5
0.7 Cu 296 0 0 0.146(2)
0.7 O(1) 296 0.5 0 0.138(7)
0.7 O(2) 296 0 0 0.326(9)
0.7 O(3) 296 0.5 0.5 0.495(10)
Measurement Method: X-ray diffraction
"Rietveld treatment of the X-ray diffraction profile data was carried out... with a STOE automatic powder diffractometer using a germanium (111) monochromated CuKα1 (wavelength=1.54056 σ) operating on a linear (position sensitive detector) in the transmission mode."

Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Critical Temperature for Tl:132; [Tl-Sr(Pr)-Cu-O]
x (formula units) Critical Temperature (K)
0.60 63
0.70 59
0.75 54
Measurement Method: Susceptibility method
"Magnetic susceptibility measurements were carried out with a Lewis coil magnetometer." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
Magnetic Susceptibility for Tl:132; [Tl-Sr(Pr)-Cu-O]
x (formula units) Temperature (K) Magnetic Susceptibility (arbitrary)
0.75 19 -1.7
0.75 31 -1.2
0.75 35 -0.6
0.75 42 -0.2
0.75 50 0.0
0.6 20 -2.3
0.6 32 -2.0
0.6 36 -1.3
0.6 40 -0.7
0.6 44 -0.3
0.6 55 0.0
0.7 20 -2.8
0.7 39 -2.3
0.7 46 -1.7
0.7 50 -1.0
0.7 52 -0.4
0.7 61 0.0
Measurement Method: Susceptibility method
"Magnetic susceptibility measurements were carried out with a Lewis coil magnetometer." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Material Specification for Tl:132; [Tl-Sr(Nd)-Cu-O] Process: Solid State Reaction
Notes: "Cuprates of the formula TlSr3-xLnxCu2O7 (Ln=Nd, Pr, Y) were prepared by reacting calculated quantities of Tl2O3 with an oxide matrix containing Y, Nd or Pr, Sr and Cu (prepared initially by heating the mixture of corresponding oxides and carbonates at 1183 K for 12 h) at 1170-1200 K for 3-12 h in sealed silver tubes."
Formula: TlSr3-xNdxCu2O7
Informal Name: Tl:132
Chemical Family: Tl-Sr(Nd)-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Crystallography for Tl:132; [Tl-Sr(Nd)-Cu-O]
Crystal System: Tetragonal
Formula Units per Cell:
Space Group:
Cell Parameters
x (formula units) Temp K a Å b Å c Å
0.5 296 3.8297 -- 12.143
0.6 296 3.8356 -- 12.120
0.7 296 3.8363 -- 12.113
0.8 296 3.8405 -- 12.094
0.9 296 3.8490 -- 12.067
1.0 296 3.8540 -- 12.033
Atomic Coordinates
x (formula units) Atom Temp K a-axis b-axis c-axis
0.6 Tl 296 0 0 0.5
0.6 Sr 296 0.5 0.5 0.289(5)
0.6 Nd/Sr 296 0.5 0.5 0.5
0.6 Cu 296 0 0 0.144(2)
0.6 O(1) 296 0.5 0 0.129(5)
0.6 O(2) 296 0 0 0.324(7)
0.6 O(3) 296 0.5 0.5 0.489(20)
Measurement Method: X-ray diffraction
"Rietveld treatment of the X-ray diffraction profile data was carried out... with a STOE automatic powder diffractometer using a germanium (111) monochromated CuKα1 (wavelength=1.54056 σ) operating on a linear (position sensitive detector) in the transmission mode."

Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Critical Temperature for Tl:132; [Tl-Sr(Nd)-Cu-O]
x (formula units) Critical Temperature (K)
0.60 98
0.70 90
0.80 86
Measurement Method: Susceptibility method
"Magnetic susceptibility measurements were carried out with a Lewis coil magnetometer." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
Magnetic Susceptibility for Tl:132; [Tl-Sr(Nd)-Cu-O]
x (formula units) Temperature (K) Magnetic Susceptibility (arbitrary)
0.6 19 -0.60
0.6 21 -0.48
0.6 25 -0.32
0.6 30 -0.19
0.6 43 -0.09
0.6 61 -0.03
0.6 99.0 0.00
0.7 16 -0.47
0.7 20 -0.32
0.7 22 -0.18
0.7 34 -0.07
0.7 50 -0.02
0.7 75.0 0.00
0.8 16 -0.23
0.8 21 -0.13
0.8 32 -0.05
0.8 50 -0.01
0.8 61 0.00
Measurement Method: Susceptibility method
"Magnetic susceptibility measurements were carried out with a Lewis coil magnetometer." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 4a of the paper.
Material Specification for Tl:132; [Tl-Sr(Y)-Cu-O] Process: Solid State Reaction
Notes: "Cuprates of the formula TlSr3-xLnxCu2O7 (Ln=Nd, Pr, Y) were prepared by reacting calculated quantities of Tl2O3 with an oxide matrix containing Y, Nd or Pr, Sr and Cu (prepared initially by heating the mixture of corresponding oxides and carbonates at 1183 K for 12 h) at 1170-1200 K for 3-12 h in sealed silver tubes."
Formula: TlSr3-xYxCu2O7
Informal Name: Tl:132
Chemical Family: Tl-Sr(Y)-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Crystallography for Tl:132; [Tl-Sr(Y)-Cu-O]
Crystal System: Tetragonal
Formula Units per Cell:
Space Group: P4/mmm
Cell Parameters
x (formula units) Temp K a Å b Å c Å
0.6 296 3.8105 -- 12.025
0.7 296 3.8147 -- 12.002
0.75 296 3.8189 -- 11.987
0.8 296 3.8266 -- 11.983
0.9 296 3.8325 -- 11.960
1.0 296 3.8376 -- 11.945
Measurement Method: X-ray diffraction
"Rietveld treatment of the X-ray diffraction profile data was carried out... with a STOE automatic powder diffractometer using a germanium (111) monochromated CuKα1 (wavelength=1.54056 σ) operating on a linear (position sensitive detector) in the transmission mode."

Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Critical Temperature for Tl:132; [Tl-Sr(Y)-Cu-O]
x (formula units) Critical Temperature (K)
0.60 88
0.70 82
0.75 74
0.80 71
Measurement Method: Susceptibility method
"Magnetic susceptibility measurements were carried out with a Lewis coil magnetometer." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
Magnetic Susceptibility for Tl:132; [Tl-Sr(Y)-Cu-O]
x (formula units) Temperature (K) Magnetic Susceptibility (arbitrary)
0.60 19 -4.9
0.60 39 -4.1
0.60 52 -3.3
0.60 53 -2.2
0.60 54 -1.3
0.60 64 -0.7
0.60 76 -0.3
0.60 89 0.0
0.70 19 -4.5
0.70 35 -3.8
0.70 42 -2.7
0.70 48 -1.4
0.70 56 -0.6
0.70 72 -0.2
0.70 84 0.0
0.75 21 -4.3
0.75 28 -3.3
0.75 37 -1.8
0.75 42 -0.8
0.75 55 -0.3
0.75 75 0.0
0.8 18 -3.9
0.8 25 -2.8
0.8 26 -1.7
0.8 35 -0.7
0.8 49 -0.2
0.8 67 0.0
Measurement Method: Susceptibility method
"Magnetic susceptibility measurements were carried out with a Lewis coil magnetometer." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 4b of the paper.