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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: Microwave (EPR) Measurements of the Penetration Depth Measurements of High-Tc Superconductors
Author(s): N.S. Dalal, B. Rakvin, T.A. Mahl, A.S. Bhalla, and Z.Z. Sheng
Publication: AMSAHTS 90: Adv. in Matls. Sci. and Appl. of HTS Volume: Not Available Issue: Not Available Year: 1991 Page(s): 83-88
Editor(s): L. H. Bennett, Y. Flom, and K. Moorjani
Publisher: National Aeronautics and Space Administration
Language: English
Notes: NASA Conference Publication 3100
Keywords: Material Specification, Critical Temperature, Penetration Depth

Materials and Properties

Tl:2223; [Tl-Ba-Ca-Cu-O]
Ti:2212; [Bi-Sr-Ca-Cu-O]
Material Specification for Tl:2223; [Tl-Ba-Ca-Cu-O] Process: Solid State Reaction
Notes: No processing information was reported.
Formula: Tl2Ba2Ca2Cu3Ox
Informal Name: Tl:2223
Chemical Family: Tl-Ba-Ca-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: Typical
Commercial Name: Typical
Production Date:
Lot Number:
Production Form:

Critical Temperature for Tl:2223; [Tl-Ba-Ca-Cu-O]
Critical Temperature (K)
119
Measurement Method: Electron paramagnetic resonance
"... Diphenylpicrylhydrazyl... was dissolved in acetone to... 10-2 M concentration... A few milligram sample of the superconductor was then immersed in the... solution and then dried in air. The EPR measurements were made using a Bruker ER 200D EPR spectrometer, operating in the X-band (9.5 GHz). The temperature was controlled to ±0.1 K... All measurements were performed with magnetic field modulation amplitudes in the range of (64-320 A/m = 0.8 - 4 Oe) at a frequency of 100 kHz."

Cautions: Evaluated Data
Penetration Depth for Tl:2223; [Tl-Ba-Ca-Cu-O]
Penetration Depth (σ)
2520
Measurement Method: Electron paramagnetic resonance
"... Diphenylpicrylhydrazyl... was dissolved in acetone to... 10-2 M concentration... A few milligram sample of the superconductor was then immersed in the... solution and then dried in air. The EPR measurements were made using a Bruker ER 200D EPR spectrometer, operating in the X-band (9.5 GHz). The temperature was controlled to ±0.1 K... All measurements were performed with magnetic field modulation amplitudes in the range of (64-320 A/m = 0.8 - 4 Oe) at a frequency of 100 kHz."

Cautions: Evaluated Data
Material Specification for Bi:2212; [Bi-Sr-Ca-Cu-O] Process: Solid State Reaction
Notes: No processing information was reported.
Formula: Bi2Sr2CaCu2Ox
Informal Name: Bi:2212
Chemical Family: Bi-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: Typical
Commercial Name: Typical
Production Date:
Lot Number:
Production Form:

Critical Temperature for Bi:2212; [Bi-Sr-Ca-Cu-O]
Critical Temperature (K)
84
Measurement Method: Electron paramagnetic resonance
"... Diphenylpicrylhydrazyl... was dissolved in acetone to... 10-2 M concentration... A few milligram sample of the superconductor was then immersed in the... solution and then dried in air. The EPR measurements were made using a Bruker ER 200D EPR spectrometer, operating in the X-band (9.5 GHz). The temperature was controlled to ±0.1 K... All measurements were performed with magnetic field modulation amplitudes in the range of (64-320 A/m = 0.8 - 4 Oe) at a frequency of 100 kHz."

Cautions: Evaluated Data
Penetration Depth for Bi:2212; [Bi-Sr-Ca-Cu-O]
Penetration Depth (σ)
2700
Measurement Method: Electron paramagnetic resonance
"... Diphenylpicrylhydrazyl... was dissolved in acetone to... 10-2 M concentration... A few milligram sample of the superconductor was then immersed in the... solution and then dried in air. The EPR measurements were made using a Bruker ER 200D EPR spectrometer, operating in the X-band (9.5 GHz). The temperature was controlled to ±0.1 K... All measurements were performed with magnetic field modulation amplitudes in the range of (64-320 A/m = 0.8 - 4 Oe) at a frequency of 100 kHz."

Cautions: Evaluated Data