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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: Correlation Between the Pressure-Induced Changes in the Hall Coefficient and Tc in Superconducting Cuprates
Author(s): C. Murayama, Y. Iye, T. Enomoto, N. Mori, Y. Yamada, T. Matsumoto, Y. Kubo, Y. Shimakawa, and T. Manako
Publication: Physica C Volume: 183 Issue: Not Available Year: 1991 Page(s): 277-285
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Temperature, Hall Coefficient

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Y:124; [Y-Ba-Cu-O]
Bi:2212; [Bi-Sr-Ca-Cu-O]
Tl:221; [Tl-Ba-Cu-O]
La:21; [La(Sr)-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Solid State Reaction
Notes: "Sintered polycrystalline materials... were prepared by solid state reaction." No additional processing details were noted.
Formula: YBa2Cu3O7
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:

Critical Temperature for Y:123; [Y-Ba-Cu-O]
x (formula units) dlnTc/dP (GPa-1) Critical Temperature (K)
-- 0.0072 91.4
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Hall Coefficient for Y:123; [Y-Ba-Cu-O]
x (formula units) dlnR/dP (GPa-1) Number of holes per Cu () Hall Coefficient (mm3 /C)
-- -0.09 0.52 0.69
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Material Specification for Y:124; [Y-Ba-Cu-O] Process: Solid State Reaction
Notes: "Sintered polycrystalline materials... were prepared by solid state reaction." No additional processing details were noted.
Formula: YBa2Cu4O8
Informal Name: Y:124
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Critical Temperature for Y:124; [Y-Ba-Cu-O]
x (formula units) dlnTc/dP (GPa-1) Critical Temperature (K)
-- 0.046 72.9
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Hall Coefficient for Y:124; [Y-Ba-Cu-O]
x (formula units) dlnR/dP (GPa-1) Number of holes per Cu () Hall Coefficient (mm3 /C)
-- -0.077 2.4 0.13
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Material Specification for Bi:2212; [Bi-Sr-Ca-Cu-O] Process: Solid State Reaction
Notes: "Sintered polycrystalline materials... were prepared by solid state reaction." No additional processing details were noted.
Formula: Bi2Sr2CaCu2O8
Informal Name: Bi:2212
Chemical Family: Bi-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Critical Temperature for Bi:2212; [Bi-Sr-Ca-Cu-O]
x (formula units) dlnTc/dP (GPa-1) Critical Temperature (K)
-- -0.0091 84.9
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Hall Coefficient for Bi:2212; [Bi-Sr-Ca-Cu-O]
x (formula units) dlnR/dP (GPa-1) Number of holes per Cu () Hall Coefficient (mm3 /C)
-- -0.108 1.0 1.41
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Material Specification for Tl:221; [Tl-Ba-Cu-O] Process: Solid State Reaction
Notes: "Sintered polycrystalline materials... were prepared by solid state reaction." No additional processing details were noted.
Formula: Tl2Ba2CuO6+x
Informal Name: Tl:221
Chemical Family: Tl-Ba-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Critical Temperature for Tl:221; [Tl-Ba-Cu-O]
x (formula units) dlnTc/dP (GPa-1) Critical Temperature (K)
-- -0.093 47.0
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Hall Coefficient for Tl:221; [Tl-Ba-Cu-O]
x (formula units) dlnR/dP (GPa-1) Number of holes per Cu () Hall Coefficient (mm3 /C)
-- -0.086 0.76 1.43
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Material Specification for La:21; [La(Sr)-Cu-O] Process: Solid State Reaction
Notes: "Sintered polycrystalline materials... were prepared by solid state reaction." No additional processing details were noted.
Formula: La2-xSrxCuO4
Informal Name: La:21
Chemical Family: La(Sr)-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Critical Temperature for La:21; [La(Sr)-Cu-O]
x (formula units) dlnTc/dP (GPa-1) Critical Temperature (K)
0.08 0.138 22.4
0.12 0.091 31.0
0.16 0.055 38.0
0.20 0.056 32.6
0.24 0.102 19.3
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data
Hall Coefficient for La:21; [La(Sr)-Cu-O]
x (formula units) dlnR/dP (GPa-1) Number of holes per Cu () Hall Coefficient (mm3 /C)
0.08 <0.01 0.08 7.20
0.12 <0.01 0.21 2.86
0.16 <0.01 0.71 0.83
0.20 <0.01 1.1 0.54
0.24 <0.01 3.3 0.18
Measurement Method: Six-arm Hall bar
"The samples... were shaped in a six-arm Hall bar shape. The electrical contact was made with silver epoxy on vacuum-evaporated gold pad on each arm. A piston-cylinder clamp cell was used to generate high pressures up to... 2 GPa. The pressure at low temperatures was determined by measuring the superconducting transition temperature of a piece of Pb. The Hall measurements were made by two different methods depending on the magnitude of the Hall signal. In one system, the sample was rotated by 180° in a horizontal magnetic field generated either by a 1.7 T electromagnet or a 6 T superconducting Helmholtz coil, by a computer-controlled stepping motor while the temperature was swept slowly. This method was employed for samples that gave relatively large Hall signals. For measurements of smaller Hall signals, another method was used. In this case, measurements were done by sweeping the magnetic field of a 9 T superconducting solenoid, while temperature was controlled to within... ±10 mK by use of a sample holder equipped with a gas-thermometer which served as a field-dependence-free thermometer."

Cautions: Evaluated Data