Preparation process, crystal structure, and physical properties of the 110-K single-phase Pb-Bi-Sr-Ca-Cu-O superconductor

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.6541· OSTI ID:6837544

Shi, F ^[1]; Rong, T S ^[2]; Zhou, S Z ^[3]; Wu, X F ^[2]; Du, J; Shi, Z H ^[3]; Cui, C G; Jin, R Y; Zhang, J L; Ran, Q Z ^[4]; Shi, N C ^[5]

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1. Department of Materials Science, Beijing, (China) Engineering, University of Science Technology, Beijing, Beijing, 100083, China (CN)
2. Department of Metal Physics, University of Science and Technology, Beijing, Beijing, 100083, China (CN)
3. Department of Materials Science and Engineering, University of Science Technology, Beijing, Beijing, 100083, China (CN)
4. Institute of Physics, Academia Sinica, Beijing, China (CN)
5. China University of Geoscience, Beijing, 100083, China (CN)

The high-{ital T}{sub {ital c}} (110-K) superconducting phase in the Pb-Bi-Sr-Ca-Cu-O has been isolated and its structural and physical properties investigated. Transmission-electron-microscopy results show that the structure belongs to a monoclinic system that is different from reports by other groups and in agreement with our x-ray-diffraction analysis. The refined crystal data are {ital a}=3.779 A, {ital b}=3.834 A, {ital c}=37.150 A, {alpha}={beta}=90{degree}, {gamma}=90{degree} 51{prime}, {ital V}=538.5 A{sup 3}, space group {ital I}112. Based on the resistivity, magnetization, critical-field, and specific-heat measurements, various parameters characterizing the monophase superconductors were determined or derived. Some of them are listed as follows: {ital T}{sub {ital c}{ital e}} (endpoint)=107 K, {ital T}{sub {ital c}{ital m}} (midpoint)=110 K, {Delta}{ital C} (specific heat jump at 107 K)=5.3 J/mol K, {gamma} (the Sommerfeld constant) =34.6 mJ/mol K{sup 2}, {ital FTHETA} (Debye temperature)=418 K, {ital H}{sub {ital c}1}(0)=900 G, {ital H}{sub {ital c}2}(0)=184 T, and {ital J}{sub {ital c}}(1.5 K, 0 T)=4.8{times}10{sup 4} A/cm{sup 2}, etc. Morphology, thermal analysis, and pressure effects of the sample are also mentioned.

• OSTI ID: 6837544
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

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36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
LATTICE PARAMETERS
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LOW TEMPERATURE
MAGNETIZATION
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MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
SPECIFIC HEAT
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TRANSMISSION ELECTRON MICROSCOPY