Characterization of YBa2Cu4O8 high temperature electrical properties and thermodynamic stability

B. S. Hong; Thomas O Mason

Characterization of YBa₂Cu₄O₈ high temperature electrical properties and thermodynamic stability

B. S. Hong, Thomas O Mason

Northwestern University

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

12 Citations (Scopus)

Abstract

Via in situ electrical property measurements (conductivity, Seebeck coefficient) over the temperature range 500-800°C and oxygen partial pressure range 10^-4-1 atm, the equilibrium transport properties and stability range of YBa₂Cu₄O₈ were determined. YBa₂Cu₄O₈ behaves like the intrinsically mixed-valent compound, magnetite (Fe₃O₄), with small variations in electrical properties with changes in oxygen partial pressure. The decomposition boundary to YBa₂Cu₃O_6+y (or YBa₂Cu_3.5O_7.5±z) and CuO occurs at log(p_O(2), atm) = -1.24 × 10⁴/T(K) + 11.01 (773 ≤ T(K) ≤ 1073).

Original language	English
Pages (from-to)	2054-2058
Number of pages	5
Journal	Journal of Materials Research
Volume	6
Issue number	10
Publication status	Published - Oct 1991

ASJC Scopus subject areas

Materials Science(all)

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title = "Characterization of YBa2Cu4O8 high temperature electrical properties and thermodynamic stability",

abstract = "Via in situ electrical property measurements (conductivity, Seebeck coefficient) over the temperature range 500-800°C and oxygen partial pressure range 10-4-1 atm, the equilibrium transport properties and stability range of YBa2Cu4O8 were determined. YBa2Cu4O8 behaves like the intrinsically mixed-valent compound, magnetite (Fe3O4), with small variations in electrical properties with changes in oxygen partial pressure. The decomposition boundary to YBa2Cu3O6+y (or YBa2Cu3.5O7.5±z) and CuO occurs at log(pO(2), atm) = -1.24 × 104/T(K) + 11.01 (773 ≤ T(K) ≤ 1073).",

author = "Hong, {B. S.} and Mason, {Thomas O}",

year = "1991",

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AU - Hong, B. S.

AU - Mason, Thomas O

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N2 - Via in situ electrical property measurements (conductivity, Seebeck coefficient) over the temperature range 500-800°C and oxygen partial pressure range 10-4-1 atm, the equilibrium transport properties and stability range of YBa2Cu4O8 were determined. YBa2Cu4O8 behaves like the intrinsically mixed-valent compound, magnetite (Fe3O4), with small variations in electrical properties with changes in oxygen partial pressure. The decomposition boundary to YBa2Cu3O6+y (or YBa2Cu3.5O7.5±z) and CuO occurs at log(pO(2), atm) = -1.24 × 104/T(K) + 11.01 (773 ≤ T(K) ≤ 1073).

AB - Via in situ electrical property measurements (conductivity, Seebeck coefficient) over the temperature range 500-800°C and oxygen partial pressure range 10-4-1 atm, the equilibrium transport properties and stability range of YBa2Cu4O8 were determined. YBa2Cu4O8 behaves like the intrinsically mixed-valent compound, magnetite (Fe3O4), with small variations in electrical properties with changes in oxygen partial pressure. The decomposition boundary to YBa2Cu3O6+y (or YBa2Cu3.5O7.5±z) and CuO occurs at log(pO(2), atm) = -1.24 × 104/T(K) + 11.01 (773 ≤ T(K) ≤ 1073).

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