Synthesis of HgBa2Ca3Cu4Oy under ambient pressure

R. Usami, S. Adachi, M. Itoh, T. Tatsuki, Ayako Yamamoto, K. Tanabe

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The mercury-based oxide superconductor, HgBa2Ca3Cu4Oy phases was synthesized by a controlled vapor/solid reaction technique using high-purity powders of HgO, BaO, CaO and CuO as starting materials. Two types of bars, with different cation ratios of Hg:Ba:Ca:Cu=0:2:2:3 and 1:2:2:3, were heated in an evacuated quartz tube. The resulting HgBa2Ca3Cu4Oy sample had a Tc of 123 K and lattice parameters a=3.852(2) Å and c=19.01(4) Å with a volume fraction of 83% of the total shielding signal. The formation condition was widely investigated, showing that the higher heating temperature and longer heating time lead to the formation of the HgBa2CanCun-1Oy phase with a higher number n of Cu-O2 planes in a unit cell.

Original languageEnglish
Pages (from-to)21-26
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume262
Issue number1-2
Publication statusPublished - 1996 May 10
Externally publishedYes

Fingerprint

Heating
Oxide superconductors
Quartz
heating
synthesis
Mercury
Shielding
Powders
Lattice constants
shielding
Cations
lattice parameters
Volume fraction
purity
quartz
Positive ions
Vapors
vapors
tubes
cations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Usami, R., Adachi, S., Itoh, M., Tatsuki, T., Yamamoto, A., & Tanabe, K. (1996). Synthesis of HgBa2Ca3Cu4Oy under ambient pressure. Physica C: Superconductivity and its Applications, 262(1-2), 21-26.

Synthesis of HgBa2Ca3Cu4Oy under ambient pressure. / Usami, R.; Adachi, S.; Itoh, M.; Tatsuki, T.; Yamamoto, Ayako; Tanabe, K.

In: Physica C: Superconductivity and its Applications, Vol. 262, No. 1-2, 10.05.1996, p. 21-26.

Research output: Contribution to journalArticle

Usami, R, Adachi, S, Itoh, M, Tatsuki, T, Yamamoto, A & Tanabe, K 1996, 'Synthesis of HgBa2Ca3Cu4Oy under ambient pressure', Physica C: Superconductivity and its Applications, vol. 262, no. 1-2, pp. 21-26.
Usami R, Adachi S, Itoh M, Tatsuki T, Yamamoto A, Tanabe K. Synthesis of HgBa2Ca3Cu4Oy under ambient pressure. Physica C: Superconductivity and its Applications. 1996 May 10;262(1-2):21-26.
Usami, R. ; Adachi, S. ; Itoh, M. ; Tatsuki, T. ; Yamamoto, Ayako ; Tanabe, K. / Synthesis of HgBa2Ca3Cu4Oy under ambient pressure. In: Physica C: Superconductivity and its Applications. 1996 ; Vol. 262, No. 1-2. pp. 21-26.
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