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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: Simultaneous Measurement of Thermal Diffusivity and Conductivity Applied to Bi-2223 Ceramic Superconductors
Author(s): M. Ikebe, H. Fujishiro, T. Naito, and K. Noto
Publication: Journal of the Physical Society of Japan Volume: 63 Issue: 8 Year: 1994 Page(s): 3107-3114
Editor(s): Not Available
Publisher: Physical Society of Japan
Language: English
Notes: Not Available
Keywords: Material Specification, Resistivity (normal state), Thermal Conductivity, Thermal Diffusivity, Specific Heat, Debye Temperature

Materials and Properties

Bi:2223; [Bi-Sr-Ca-Cu-O]
Material Specification for Bi:2223; [Bi-Sr-Ca-Cu-O] Process:
Notes: "...Bi-2223 sintered polycrytals are analyzed...in this study." No additional processing details were noted.
Formula: Bi2Sr2Ca2Cu3O10+x
Informal Name: Bi:2223
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:
Resistivity (normal state) for Bi:2223; [Bi-Sr-Ca-Cu-O]
Temperature (K) Resistivity (normal state) (mΩ·cm)
107 0.01
108 0.06
114 0.30
119 0.40
134 0.49
199 0.67
295 0.92
Measurement Method: Unknown resistivity method

Cautions: Unevaluated Data
No measurement details were noted. Digitized data were obtained from Figure 3 of the paper.
Thermal Conductivity for Bi:2223; [Bi-Sr-Ca-Cu-O]
Temperature (K) Thermal Conductivity (W m-1 K-1)
16 0.8
23 1.1
31 1.6
45 2.4
59 2.9
65 3.1
69 3.1
73 3.3
84 3.3
94 3.3
99 3.1
103 3.0
109 3.0
118 3.0
139 3.1
143 3.3
147 3.3
153 3.4
178 3.6
180 3.6
Measurement Method: Hot flow analysis method
"...cold head of a Gifford-McMahon (GM) cycle helium refigerator was used as the cryostat. The attachment of both the Bi-2223 sample to the cold-finger of the GM refrigerator and a metal film resistance heater (10 kΩ) to the sample was made by use of GE7031 varnish. AuFe(0.07 at.%)-Chrometl thermocouples with diameter 73 µm were used as thermometers. The sample was enclosed by a radiation shield of Ni-plated Cu which was thermally anchored to the cold head. The whole sample chamber was evacuated to (1 x 10-6 Torr = 0.13 mPa) by an oil diffusion pump. Under this experimental setup, the thermal conductivity was measured....for various values of α....by a standard steady heat-flow method. The thermal diffusivity was measured by an arbitrary heating method prior to the conductivity measurement at each fixed temperature. When a heat pulse is transmitted from a heater into a sample of long and slender shape, the time variation of temperature...is described by the one dimensional diffusion equation....This equation can be numerically solved by the Crank-Nicolson implicit method. This method of the diffusivity measurement had been confirmed to have ±1.5% precision and ±5% accuracy for a variety of specimens with various α values."

Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.
Thermal Diffusivity for Bi:2223; [Bi-Sr-Ca-Cu-O]
Temperature (K) Thermal Diffusivity (10-6 m2 s-1)
15 0.28
24 0.12
39 0.080
44 0.073
48 0.064
55 0.056
60 0.056
80 0.043
93 0.029
98 0.030
107 0.025
117 0.022
129 0.022
134 0.020
144 0.020
149 0.020
152 0.020
162 0.019
174 0.018
180 0.016
Measurement Method: Hot flow analysis method
"...cold head of a Gifford-McMahon (GM) cycle helium refigerator was used as the cryostat. The attachment of both the Bi-2223 sample to the cold-finger of the GM refrigerator and a metal film resistance heater (10 kΩ) to the sample was made by use of GE7031 varnish. AuFe(0.07 at.%)-Chrometl thermocouples with diameter 73 µm were used as thermometers. The sample was enclosed by a radiation shield of Ni-plated Cu which was thermally anchored to the cold head. The whole sample chamber was evacuated to (1 x 10-6 Torr = 0.13 mPa) by an oil diffusion pump. Under this experimental setup, the thermal conductivity was measured....for various values of α....by a standard steady heat-flow method. The thermal diffusivity was measured by an arbitrary heating method prior to the conductivity measurement at each fixed temperature. When a heat pulse is transmitted from a heater into a sample of long and slender shape, the time variation of temperature...is described by the one dimensional diffusion equation....This equation can be numerically solved by the Crank-Nicolson implicit method. This method of the diffusivity measurement had been confirmed to have ±1.5% precision and ±5% accuracy for a variety of specimens with various α values."

Cautions: Evaluated Data
Digitized data were obtained from Figure 5 of the paper.
Specific Heat for Bi:2223; [Bi-Sr-Ca-Cu-O]
Temperature (K) Specific Heat (J kg-1 K-1)
16 7
32 29
46 60
57 95
61 99
71 130
76 138
80 145
90 184
96 212
101 204
112 235
120 262
131 261
136 301
145 312
152 351
156 343
161 347
165 362
175 385
Measurement Method: Hot flow analysis method
"...cold head of a Gifford-McMahon (GM) cycle helium refigerator was used as the cryostat. The attachment of both the Bi-2223 sample to the cold-finger of the GM refrigerator and a metal film resistance heater (10 kΩ) to the sample was made by use of GE7031 varnish. AuFe(0.07 at.%)-Chrometl thermocouples with diameter 73 µm were used as thermometers. The sample was enclosed by a radiation shield of Ni-plated Cu which was thermally anchored to the cold head. The whole sample chamber was evacuated to (1 x 10-6 Torr = 0.13 mPa) by an oil diffusion pump. Under this experimental setup, the thermal conductivity was measured....for various values of α....by a standard steady heat-flow method. The thermal diffusivity was measured by an arbitrary heating method prior to the conductivity measurement at each fixed temperature. When a heat pulse is transmitted from a heater into a sample of long and slender shape, the time variation of temperature...is described by the one dimensional diffusion equation....This equation can be numerically solved by the Crank-Nicolson implicit method. This method of the diffusivity measurement had been confirmed to have ±1.5% precision and ±5% accuracy for a variety of specimens with various α values."

Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.

Debye Temperature for Bi:2223; [Bi-Sr-Ca-Cu-O]
Debye Temperature (K)
400 ± 60
Measurement Method: Hot flow analysis method
"...cold head of a Gifford-McMahon (GM) cycle helium refigerator was used as the cryostat. The attachment of both the Bi-2223 sample to the cold-finger of the GM refrigerator and a metal film resistance heater (10 kΩ) to the sample was made by use of GE7031 varnish. AuFe(0.07 at.%)-Chrometl thermocouples with diameter 73 µm were used as thermometers. The sample was enclosed by a radiation shield of Ni-plated Cu which was thermally anchored to the cold head. The whole sample chamber was evacuated to (1 x 10-6 Torr = 0.13 mPa) by an oil diffusion pump. Under this experimental setup, the thermal conductivity was measured....for various values of α....by a standard steady heat-flow method. The thermal diffusivity was measured by an arbitrary heating method prior to the conductivity measurement at each fixed temperature. When a heat pulse is transmitted from a heater into a sample of long and slender shape, the time variation of temperature...is described by the one dimensional diffusion equation....This equation can be numerically solved by the Crank-Nicolson implicit method. This method of the diffusivity measurement had been confirmed to have ±1.5% precision and ±5% accuracy for a variety of specimens with various α values."

Cautions: Evaluated Data