Infrared absorption and far-infrared diffuse reflection spectra in Pb-doped Bi-Sr-Ca-Cu-O high-temperature superconductor

Journal Article · Fri Mar 01 00:00:00 EST 1991 · International Journal of Infrared and Millimeter Waves; (United States)

DOI:https://doi.org/10.1007/BF01010298· OSTI ID:5002437

Zhong, Liyun; Cai, Jiye; Liu, Yi; Tang, Honggao; Sun, Yuping; Du, Jiaju ^[1]

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1. Academia Sinica, Hefei (China)

In this paper the authors study the room-temperature infrared transmission spectra (400-1,600cm{sup {minus}1}) and far-infrared diffuse reflection spectra (50-450cm{sup {minus}1}) in Pb-doped Bi-Sr-Ca-Cu-O (2223) single phase (Tc = 107k,sp1), multiphase (Tc = 110k,sp2) and nonsuperconducting samples (sp3). The spectral features in superconductor are totally different from those in nonsuperconductor, which show the different crystal structure. The correlation existing between a factor group analysis of the phonons in (2223) and (2212) compounds affords a tentative assignment of ir-active modes in Pb-doped (2223) single phase by comparison with reported data in (2212) materials. The Cu-O stretching E{sub u} vibration (605cm{sup {minus}1}) of CuO{sub 2} layers is the characteristic vibrational mode related perovskitelike crystal structures. Two phonon coupling effect emerges in the infrared transmission spectra in Pb-doped superconductor. The Ca-O vibration A{sub 2u} (254cm{sup {minus}1}) might be related to superconductivity of Bi-based family.

• OSTI ID: 5002437
• Journal Information: International Journal of Infrared and Millimeter Waves; (United States), Vol. 12:3; ISSN 0195-9271
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CRYSTAL STRUCTURE
INFRARED SPECTRA
SUPERCONDUCTIVITY
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
STRONTIUM OXIDES
AMBIENT TEMPERATURE
COMPARATIVE EVALUATIONS
DOPED MATERIALS
LEAD
PHONONS
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EVALUATION
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUASI PARTICLES
SPECTRA
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
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Cermets
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