Polymerized Complex Synthesis of the Modulation-free (Bi, Pb)2 Sr2(Ca, R)Cu2O8+d (R: Rare Earth=Y)

Masato Kakihana, Minoru Osada, Masatomo Yashima, Masahiro Yoshimura, Toshiya Abiko, Sugitani Yoshinori, Hiromasa Mazaki, Hiroshi Yasuoka

Research output: Contribution to journalArticle

Abstract

High-purity ceramic samples of the modulation-free Bi2-xPbxSr2Ca1-yYyCu2Oz with a wide range of composition (x=(l+y)/2±0.2, 0.25≤y≤0.8) have been prepared by the polymerized complex method. The method is based on the formation of a polymer complex which is obtained through polyesterfication between metal citrate complexes and ethylene glycol. This method yielded almost homogeneous x=0.8 materials with Y compositions of y=0.2, 0.6 and 0.8 through relatively short sintering periods of 32 hours. The corresponding X-ray diffraction and Raman scattering analyses have shown that the materials are virtually of single phase with only minor traces of Sr2.5Bi0.5Pb3Ca2CuOz (< 1 %). The lattice parameters a and b increase, while the c-axis value decreases with increasing Y content, y. Complex magnetic susceptibility measurements have confirmed the presence of a single bulk Bi2212 phase. For Bi1.2Pb0.8Sr2Ca0.8Y0.2Cu2Oz, the onset temperature of superconducting transition Tc was 89.5 K and the transition width (10-90 %) of full diamagnetism was 6.4 K for the measuring field of 100 mOe. The variation of Tc with Y content in the modulation-free Bi2212 phase was similar with that observed in the modulated Bi2Sr2Ca1-yYyCu2Oz.

Original languageEnglish
Pages (from-to)735-740
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume42
Issue number6
DOIs
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Rare earths
Modulation
Diamagnetism
Ethylene Glycol
Ethylene glycol
Chemical analysis
Magnetic susceptibility
Citric Acid
Lattice constants
Raman scattering
Polymers
Sintering
Metals
X ray diffraction
Temperature

Keywords

  • Modulation-free BiPbSrCaYCuO Polymerized complex method
  • Superconductor-Insulator transition

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys
  • Industrial and Manufacturing Engineering
  • Materials Chemistry

Cite this

Polymerized Complex Synthesis of the Modulation-free (Bi, Pb)2 Sr2(Ca, R)Cu2O8+d (R : Rare Earth=Y). / Kakihana, Masato; Osada, Minoru; Yashima, Masatomo; Yoshimura, Masahiro; Abiko, Toshiya; Yoshinori, Sugitani; Mazaki, Hiromasa; Yasuoka, Hiroshi.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 42, No. 6, 1995, p. 735-740.

Research output: Contribution to journalArticle

Kakihana, Masato ; Osada, Minoru ; Yashima, Masatomo ; Yoshimura, Masahiro ; Abiko, Toshiya ; Yoshinori, Sugitani ; Mazaki, Hiromasa ; Yasuoka, Hiroshi. / Polymerized Complex Synthesis of the Modulation-free (Bi, Pb)2 Sr2(Ca, R)Cu2O8+d (R : Rare Earth=Y). In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 1995 ; Vol. 42, No. 6. pp. 735-740.
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abstract = "High-purity ceramic samples of the modulation-free Bi2-xPbxSr2Ca1-yYyCu2Oz with a wide range of composition (x=(l+y)/2±0.2, 0.25≤y≤0.8) have been prepared by the polymerized complex method. The method is based on the formation of a polymer complex which is obtained through polyesterfication between metal citrate complexes and ethylene glycol. This method yielded almost homogeneous x=0.8 materials with Y compositions of y=0.2, 0.6 and 0.8 through relatively short sintering periods of 32 hours. The corresponding X-ray diffraction and Raman scattering analyses have shown that the materials are virtually of single phase with only minor traces of Sr2.5Bi0.5Pb3Ca2CuOz (< 1 {\%}). The lattice parameters a and b increase, while the c-axis value decreases with increasing Y content, y. Complex magnetic susceptibility measurements have confirmed the presence of a single bulk Bi2212 phase. For Bi1.2Pb0.8Sr2Ca0.8Y0.2Cu2Oz, the onset temperature of superconducting transition Tc was 89.5 K and the transition width (10-90 {\%}) of full diamagnetism was 6.4 K for the measuring field of 100 mOe. The variation of Tc with Y content in the modulation-free Bi2212 phase was similar with that observed in the modulated Bi2Sr2Ca1-yYyCu2Oz.",
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AU - Kakihana, Masato

AU - Osada, Minoru

AU - Yashima, Masatomo

AU - Yoshimura, Masahiro

AU - Abiko, Toshiya

AU - Yoshinori, Sugitani

AU - Mazaki, Hiromasa

AU - Yasuoka, Hiroshi

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AB - High-purity ceramic samples of the modulation-free Bi2-xPbxSr2Ca1-yYyCu2Oz with a wide range of composition (x=(l+y)/2±0.2, 0.25≤y≤0.8) have been prepared by the polymerized complex method. The method is based on the formation of a polymer complex which is obtained through polyesterfication between metal citrate complexes and ethylene glycol. This method yielded almost homogeneous x=0.8 materials with Y compositions of y=0.2, 0.6 and 0.8 through relatively short sintering periods of 32 hours. The corresponding X-ray diffraction and Raman scattering analyses have shown that the materials are virtually of single phase with only minor traces of Sr2.5Bi0.5Pb3Ca2CuOz (< 1 %). The lattice parameters a and b increase, while the c-axis value decreases with increasing Y content, y. Complex magnetic susceptibility measurements have confirmed the presence of a single bulk Bi2212 phase. For Bi1.2Pb0.8Sr2Ca0.8Y0.2Cu2Oz, the onset temperature of superconducting transition Tc was 89.5 K and the transition width (10-90 %) of full diamagnetism was 6.4 K for the measuring field of 100 mOe. The variation of Tc with Y content in the modulation-free Bi2212 phase was similar with that observed in the modulated Bi2Sr2Ca1-yYyCu2Oz.

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