The high-Tc phase with a new modulation mode in the Bi, Pb-Sr-Ca-Cu-O system

Yasunori Ikeda; Mikio Takano; Zenji Hiroi; Kiichi Oda; Hitoshi Kitaguchi; Jun Takada; Yoshinari Miura; Yasuo Takeda; Osamu Yamamoto; Hiromasa Mazaki

doi:10.1143/JJAP.27.L2067

The high-T_c phase with a new modulation mode in the Bi, Pb-Sr-Ca-Cu-O system

Yasunori Ikeda, Mikio Takano, Zenji Hiroi, Kiichi Oda, Hitoshi Kitaguchi, Jun Takada, Yoshinari Miura, Yasuo Takeda, Osamu Yamamoto, Hiromasa Mazaki

Faculty of Engineering

Research output: Contribution to journal › Article › peer-review

87 Citations (Scopus)

Abstract

The preparation and characterization of Bi_1.73Pb_0.35Sr_1.89Ca_1.86Cu₃O_9.91, a lead-rich high-T_c phase, were studied (T_c(ρ=0)=105 K). This compound crystallized in a pseudotetragonal structure with a_t=0.541 nm and c_t=3.709 nm, while a unique one-dimensional modulation with a wavelength of 4.7 nm (≃8.7a) was found along the b axis using transmission electron microscopy. Such a lead-rich phase and a lead-free (or very poor) phase crystallizing in the well-known modulated structure (2.7 nm≃5a) were intergrown at intermediate compositions, such as Pb/Bi=1/9. Effects of annealing under different oxygen pressures were studied.

Original language	English
Pages (from-to)	L2067-L2070
Journal	Japanese Journal of Applied Physics
Volume	27
Issue number	11 A
DOIs	https://doi.org/10.1143/JJAP.27.L2067
Publication status	Published - Nov 1988

Keywords

Ac susceptibility
Annealing effects
Bi
High-T (105 K) superconductor
Pb-Sr-Ca-Cu-0 system
Structural modulation

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.27.L2067

Cite this

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title = "The high-Tc phase with a new modulation mode in the Bi, Pb-Sr-Ca-Cu-O system",

abstract = "The preparation and characterization of Bi1.73Pb0.35Sr1.89Ca1.86Cu3O9.91, a lead-rich high-Tc phase, were studied (Tc(ρ=0)=105 K). This compound crystallized in a pseudotetragonal structure with at=0.541 nm and ct=3.709 nm, while a unique one-dimensional modulation with a wavelength of 4.7 nm (≃8.7a) was found along the b axis using transmission electron microscopy. Such a lead-rich phase and a lead-free (or very poor) phase crystallizing in the well-known modulated structure (2.7 nm≃5a) were intergrown at intermediate compositions, such as Pb/Bi=1/9. Effects of annealing under different oxygen pressures were studied.",

keywords = "Ac susceptibility, Annealing effects, Bi, High-T (105 K) superconductor, Pb-Sr-Ca-Cu-0 system, Structural modulation",

author = "Yasunori Ikeda and Mikio Takano and Zenji Hiroi and Kiichi Oda and Hitoshi Kitaguchi and Jun Takada and Yoshinari Miura and Yasuo Takeda and Osamu Yamamoto and Hiromasa Mazaki",

year = "1988",

month = nov,

doi = "10.1143/JJAP.27.L2067",

language = "English",

volume = "27",

pages = "L2067--L2070",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

publisher = "INSTITUTE OF PURE AND APPLIED PHYSICS",

number = "11 A",

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TY - JOUR

T1 - The high-Tc phase with a new modulation mode in the Bi, Pb-Sr-Ca-Cu-O system

AU - Ikeda, Yasunori

AU - Takano, Mikio

AU - Hiroi, Zenji

AU - Oda, Kiichi

AU - Kitaguchi, Hitoshi

AU - Takada, Jun

AU - Miura, Yoshinari

AU - Takeda, Yasuo

AU - Yamamoto, Osamu

AU - Mazaki, Hiromasa

PY - 1988/11

Y1 - 1988/11

N2 - The preparation and characterization of Bi1.73Pb0.35Sr1.89Ca1.86Cu3O9.91, a lead-rich high-Tc phase, were studied (Tc(ρ=0)=105 K). This compound crystallized in a pseudotetragonal structure with at=0.541 nm and ct=3.709 nm, while a unique one-dimensional modulation with a wavelength of 4.7 nm (≃8.7a) was found along the b axis using transmission electron microscopy. Such a lead-rich phase and a lead-free (or very poor) phase crystallizing in the well-known modulated structure (2.7 nm≃5a) were intergrown at intermediate compositions, such as Pb/Bi=1/9. Effects of annealing under different oxygen pressures were studied.

AB - The preparation and characterization of Bi1.73Pb0.35Sr1.89Ca1.86Cu3O9.91, a lead-rich high-Tc phase, were studied (Tc(ρ=0)=105 K). This compound crystallized in a pseudotetragonal structure with at=0.541 nm and ct=3.709 nm, while a unique one-dimensional modulation with a wavelength of 4.7 nm (≃8.7a) was found along the b axis using transmission electron microscopy. Such a lead-rich phase and a lead-free (or very poor) phase crystallizing in the well-known modulated structure (2.7 nm≃5a) were intergrown at intermediate compositions, such as Pb/Bi=1/9. Effects of annealing under different oxygen pressures were studied.

KW - Ac susceptibility

KW - Annealing effects

KW - Bi

KW - High-T (105 K) superconductor

KW - Pb-Sr-Ca-Cu-0 system

KW - Structural modulation

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DO - 10.1143/JJAP.27.L2067

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SN - 0021-4922

VL - 27

SP - L2067-L2070

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

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